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Hi,
I bought a Lenovo Thinkpad tabled with memory specifications of 1GB RAM and 16GB HDD. All nice, until I go in Settings and check at settings/applications/storage use/running and all which show a disappointing values of total memory ~550MB RAM (almost half...) and ~12GB (almost 25% less...).
For HDD, I can not accept that the rest of 4GB are hidden because are used by Android 3.1 or used by file system format. Even so, Lenovo should be honest and declare total memory against available memory even is "eaten" by various reasons.
For RAM, I can not find any explanation why I see only half.
Q1-Can somebody explain me if tablet is faulty or has a kind of manufacturing issue ?
Q2-Can somebody to check if his tablet has the same memory discrepancies versus manufacturer specifications ?
Thanks!
All tablet's have this "cheaty" way of listing specs. But if you buy a laptop and it says 200gb. You can be pretty sure that windows 7 or what ever is installed is taking up space. The same applies to RAM. While the system may come with 4gb ram, the system has "eaten" som of it.
So, I don't really see the complaint here?
siggehandf said:
All tablet's have this "cheaty" way of listing specs. But if you buy a laptop and it says 200gb. You can be pretty sure that windows 7 or what ever is installed is taking up space. The same applies to RAM. While the system may come with 4gb ram, the system has "eaten" som of it.
So, I don't really see the complaint here?
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Click to collapse
+1
The specs will never match the actual available memory since there is always space allocated to system whether it be ram or hdd
Sent from my GALAXY NEXUS using Tapatalk
sorinutzu said:
For RAM, I can not find any explanation why I see only half.
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Click to collapse
It's likely that the other half is being reserved as video memory.
Hi,
Thanks for reply. I've done a check on other tablets and they show the same lower memory than spec, except Asus 501 I think with ICS 4.
However, I think it should be specified total phisical memory and available memory.
sorinutzu said:
Hi,
Thanks for reply. I've done a check on other tablets and they show the same lower memory than spec, except Asus 501 I think with ICS 4.
However, I think it should be specified total phisical memory and available memory.
Click to expand...
Click to collapse
Total available ram will be different and much less than the specs on any Android or mobile device. The system uses memory to load OS and for graphics.
Also the memory space will be less formatted and with all the system apps.
Just like a formatted hard drive or ssd is less than spec.
I do not know why people still complain about these things it is pretty ignorant. Have you ever owned a computer, tablet or cell phone before?
Sent from my HTC Rezound
I posted this in another thread but thought it was worthy of its own thread.
I've owned a lot of Android devices with 1GB of RAM - Xoom, Galaxy Tab 10.1, Galaxy Note, and the original Transformer. This is the first android device that actually shows 1gb of ram. Every 1gb phone or tablet I've had only lists around 750mb total, and then only about 400 or so free on a fresh boot. The explanation has always been that 1gb is shared ram and that the mixing 250mb or so is for video ram. You can see total and available ram in an app called OSMonitor. Anyway, the tf300 actually shows 1gb total ram, and 750 free on a fresh boot. So that's an extra 250mb of usable ram over other devices.
Thoughts?
The device has more as 1GB RAM (1,2GB maybe)?
Gesendet von meinem Galaxy Nexus mit Tapatalk 2
It's advertised as 1GB of RAM, so either it has more actual RAM (1.2 like you suggest) or it has dedicated video RAM somehow.
It's very possible this is inherent to Tegra3. I do not have any Tegra 3 devices to check. I'm going to ask in the Prime Q&A section.
Obviously either a design flaw or outright false advertisement. You should sue them for giving you more ram than advertised.
goodintentions said:
Obviously either a design flaw or outright false advertisement. You should sue them for giving you more ram than advertised.
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Click to collapse
WTF? I'm not complaining I'm trying to understand it. It's different than every other Android device.
EvoXOhio said:
WTF? I'm not complaining I'm trying to understand it. It's different than every other Android device.
Click to expand...
Click to collapse
Goodintentions is known to be sarcastic you will learn that in time. Most likley it is because tegra 3's gpu has its own dedicated ram so it does not go into the system ram
mrevankyle said:
Goodintentions is known to be sarcastic you will learn that in time. Most likley it is because tegra 3's gpu has its own dedicated ram so it does not go into the system ram
Click to expand...
Click to collapse
That would explain it. do you have a source link to back that up? not finding anything in a google search.
Thanks.
Everything im finding is that it just has the 1gb of ram, but possibly the way it handles it is different and may expand or shrink that video ram depending on what it needs.
http://www.nvidia.com/object/tegra-3-processor.html
just general info
also is DDR3
jblah said:
also is DDR3
Click to expand...
Click to collapse
Yeah DDR3 means it's faster and has more bandwidth, but that wouldn't affect whether the system has dedicated or shared video RAM.
Is it possible that it's just more efficient in the usage of it's 1GB of ram than the previous products? I can't find any mention anywhere of Tegra 3 specifically doing anything or of the TF300 having more secret ram or anything.
That was the first thing that I noticed about this tab, is that the memory management on this tab is awesome. I can be running GTA3, have two or three tabs open in the browser and also be streaming music and the RAM only drops to about 550MB. At idle on a fresh boot, around 750MB free at idle, and If i do a task killer it will jump up to 830MB temporarily. I can only think it's becuase of the Tegra3 CPU. Regardless it's nice to see a tab with so much free RAM.
Scavar said:
Is it possible that it's just more efficient in the usage of it's 1GB of ram than the previous products? I can't find any mention anywhere of Tegra 3 specifically doing anything or of the TF300 having more secret ram or anything.
Click to expand...
Click to collapse
No because we're not talking about FREE RAM here we're taking about TOTAL RAM. either the system has more than 1GB or it's not sharing RAM with the video card.
das7771 said:
At idle on a fresh boot, around 750MB free at idle, and If i do a task killer it will jump up to 830MB temporarily. I can only think it's becuase of the Tegra3 CPU. Regardless it's nice to see a tab with so much free RAM.
Click to expand...
Click to collapse
Huge amounts of free RAM is not something nice to see; it's a pointless waste. I guess that misunderstanding is still pervasive in the "OMG tasks are in RAM MUST KILL THEM" community ...
nightwulf said:
Huge amounts of free RAM is not something nice to see; it's a pointless waste. I guess that misunderstanding is still pervasive in the "OMG tasks are in RAM MUST KILL THEM" community ...
Click to expand...
Click to collapse
Huge amounts of free RAM on a fresh boot is a GREAT thing. It means that the OS is lightweight and not loading tons of bloatware into memory. Now after using the tablet and opening tons of apps the free RAM should go down, if not then yes it is wasting RAM by dumping stuff out of memory.
But besides that the topic at hand is total RAM. more total RAM means more apps can stay in the background which means better multitasking.
They all actually have 1GB of RAM. The difference is simply that some chips separate the video RAM and the system RAM, where others are able to use a shared memory space and dynamically allocate RAM to video as necessary.
Most likely, devices with higher memory bandwidth will be able to use dynamically allocation because the extra bandwidth provides the overhead necessary to minimize performance impacts should the GPU need to pull more memory from the system on the fly.
On Tegra2 devices which were limited to 1 channel of 32bit ddr2, there is much less memory bandwidth than on tegra3 with ddr3 (or dual channel ddr2 like ipad). In this instance, it would cause a performance hit to have to free up extra memory from background tasks and then reallocate it to the gpu - so the solution is to just partition the entire memory into two sections each of which are generally large enough for both their respective duties: video ram and system ram.
EvoXOhio said:
Yeah DDR3 means it's faster and has more bandwidth, but that wouldn't affect whether the system has dedicated or shared video RAM.
Click to expand...
Click to collapse
current reviews & memory benchmarks have shown the 300 ddr3 ram shows no Performance improvement over Prime ddr2. developers here can probably make the most it though.
Finally you all have your own section. CONGRATS!
---------- Post added at 10:33 AM ---------- Previous post was at 10:25 AM ----------
a.mcdear said:
They all actually have 1GB of RAM. The difference is simply that some chips separate the video RAM and the system RAM, where others are able to use a shared memory space and dynamically allocate RAM to video as necessary.
Most likely, devices with higher memory bandwidth will be able to use dynamically allocation because the extra bandwidth provides the overhead necessary to minimize performance impacts should the GPU need to pull more memory from the system on the fly.
On Tegra2 devices which were limited to 1 channel of 32bit ddr2, there is much less memory bandwidth than on tegra3 with ddr3 (or dual channel ddr2 like ipad). In this instance, it would cause a performance hit to have to free up extra memory from background tasks and then reallocate it to the gpu - so the solution is to just partition the entire memory into two sections each of which are generally large enough for both their respective duties: video ram and system ram.
Click to expand...
Click to collapse
he makes a great point. although no memory improvements shown in benchmarking, what he is saying could be seen as an improvement though. good info.
300 is not the only Tegra3 kid on the block with new DDR3 ram. Toshiba just released their Tegra3 Excite 10.1 in. tablet. it has gorilla glass, 1280x800 display, and 1gb DDR3 ram. available in 16 or 32gb. you can also order a 64gb.
demandarin said:
current reviews & memory benchmarks have shown the 300 ddr3 ram shows no Performance improvement over Prime ddr2. developers here can probably make the most it though.
Finally you all have your own section. CONGRATS!
---------- Post added at 10:33 AM ---------- Previous post was at 10:25 AM ----------
he makes a great point. although no memory improvements shown in benchmarking, what he is saying could be seen as an improvement though. good info.
300 is not the only Tegra3 kid on the block with new DDR3 ram. Toshiba just released their Tegra3 Excite 10.1 in. tablet. it has gorilla glass, 1280x800 display, and 1gb DDR3 ram. available in 16 or 32gb. you can also order a 64gb.
Click to expand...
Click to collapse
500 bucks for a 32gig.... No sir.
Sent from my SPH-D710 using xda premium
In the spec section Amazon lists the TF300 as having 2GB of RAM...I'm sure its a mistype though.
http://www.amazon.com/Transformer-TF300-T-B1-BL-10-1-Inch-Tablet/dp/B007P4YAPK
Running 2.6 Kernel mine shows 983,2 MB of Total RAM.
After installing some nec. apps it drops down from ~850 MB to ~630 of
available RAM. After removal of most BW it shows ~820 MB of free RAM.
It's normal behaviour. It just acts like the Prime. Open it und you'll see a Prime with some faster MemoryChips & an optimized board design
I just hated my Prime for many reasons, but I really love this one
They've improved very much here
The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)
Also notice the 508 MB Swap partition in the screenshot...
edgarf28 said:
The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)
Also notice the 508 MB Swap partition in the screenshot...
Click to expand...
Click to collapse
Can you do a androbench benchmark please i want to know the storage performance
---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------
edgarf28 said:
The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)
Also notice the 508 MB Swap partition in the screenshot...
Click to expand...
Click to collapse
What is the swap file used for, is it for the cpu, does it use the ram?
The thing has the fastest set up it should be the most smoothest device ever made.
64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram
---------- Post added at 06:40 PM ---------- Previous post was at 06:03 PM ----------
bushgreen said:
Can you do a androbench benchmark please i want to know the storage performance
---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------
What is the swap file used for, is it for the cpu, does it use the ram?
The thing has the fastest set up it should be the most smoothest device ever made.
64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram
Click to expand...
Click to collapse
.
..
bushgreen said:
Can you do a androbench benchmark please i want to know the storage performance
---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------
What is the swap file used for, is it for the cpu, does it use the ram?
The thing has the fastest set up it should be the most smoothest device ever made.
64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram
---------- Post added at 06:40 PM ---------- Previous post was at 06:03 PM ----------
.
..
Click to expand...
Click to collapse
The 508 MB Swap partition do not use any RAM, I think it's just an partition on the internal memory to extent the RAM with 508 MB (so basically you have 1.8 Gb RAM + 508 MB Swap)
And see attached screenshot for the AndroBench results.
it is just plain stupid putting only 2GB ram on a 64Bit device and then helping out with 500MB swap. They could have easily add 3GB ram without any significant costs..
Funny thing is that the nexus 6 has 3GB ram and has a variant with 64GB disk.
Looks like f2fs is only used on the encrypted /data partition, /system and /cache still use ext4.
Also, the Nexus 9 actually has zram enabled, which explains the swap "partition". Having 2GB of memory with 0.5GB of zram is an interesting alternative to just using 3GB of memory instead.
farmerbb said:
Looks like f2fs is only used on the encrypted /data partition, /system and /cache still use ext4.
Also, the Nexus 9 actually has zram enabled, which explains the swap "partition". Having 2GB of memory with 0.5GB of zram is an interesting alternative to just using 3GB of memory instead.
Click to expand...
Click to collapse
no, it is not an interesting alternative, it is a stupid one in every way. the nexus 9 is already quite expensive. 1GB ram just costs a couple of dollars and room is more than enough within. and considering it is 64Bit it will bloat up ram usage anyway, not to forget that this high screen resolution eats up a lot of ram, too.
a user said:
no, it is not an interesting alternative, it is a stupid one in every way. the nexus 9 is already quite expensive. 1GB ram just costs a couple of dollars and room is more than enough within. and considering it is 64Bit it will bloat up ram usage anyway, not to forget that this high screen resolution eats up a lot of ram, too.
Click to expand...
Click to collapse
It's stupid until you realize how channeling works. The option to user zram is a very interesting one and it might be a better solution. So far benchmarks of the tablet agree with HTC/Google.
EDIT: also, in a serialized "queue" architecture like the this 64bit K1 with 2 cores, multitasking is not the priority. 2GB + zRam or 3GB should not make much difference.
Google opted for this kind of CPU in the N9 to make it as fast as an ipad air2 on your active task. You don't have multiple windows, you won't do true multitasking in this tablet. This is an ipad alternative, and even these architectural details show it.
FrankBullitt said:
It's stupid until you realize how channeling works. The option to user zram is a very interesting one and it might be a better solution. So far benchmarks of the tablet agree with HTC/Google.
EDIT: also, in a serialized "queue" architecture like the this 64bit K1 with 2 cores, multitasking is not the priority. 2GB + zRam or 3GB should not make much difference.
Google opted for this kind of CPU in the N9 to make it as fast as an ipad air2 on your active task. You don't have multiple windows, you won't do true multitasking in this tablet. This is an ipad alternative, and even these architectural details show it.
Click to expand...
Click to collapse
a lot of unrelated stuff in your post. there is no need for zram or swap (regarding the first posts its swap and not compressed ram, but i do not know myself what it is) if you get an extra 1GB of ram. 1 GB of ram is ALWAYS better than zram or swap. zram is a nice option when you cannot extend the memory for various reasons and swap may be used for heigh memory use cases when you have some not too slow alternate memory. n9 internal memory is still damn slow for swapping (if it is indeed a swap faile on disk at all).
but actually there seems to be no good reason to not add an extra GB as we can see the nexus 6 has it, the nexus 9 ha definetly room for it (it is not like pc dram module) and it is damn cheap also.
secondly, i'm not talking about multitasking when i pointed out 64bit, so why the hell are you bringing this in? beside of that on a tablet multitasking it meanwhile not so uncommen. the point is that a 64 bit os has a MUCH larger memory footprint. also such high screen resolutions add a decent amount of memory either. and finally, your argument about benchmarks proving anything related to my comment is unrelated at best. it doesn't prove anything related to my statement.
there is aboluelty no reason to prefere zram or swap over an extra GB of ram, and it seems that there is nothing that would made it difficult for htc to add it. i can only assume that they added this just collect some experience on it and nothing more.
i really don't get it. what's the purpose of your statement? showing of your lack of knowledge or celebrating fanboyship "oh cool, they skipped a 5$ GB ram but gave us zram hurayyyyy".
sounds totally sound to give a smartphone 1GB ram more, same high resoltion on a smaller screen and twice as much disk space
EDIT: but please finally tell us WHAT exactly is so "interessting" adding zram or swap instead of one GB ram? you post has no information except this little claim. one might find this decision interesting of course due to its stupidity but it doesn't look that this is the source of your interest.
Any conjecture or theoretical analysis is ultimately pretty meaningless. Just let the performance speak for itself.
@mkygod hallelujah !! ??
a user said:
a lot of unrelated stuff in your post. there is no need for zram or swap (regarding the first posts its swap and not compressed ram, but i do not know myself what it is) if you get an extra 1GB of ram. 1 GB of ram is ALWAYS better than zram or swap. zram is a nice option when you cannot extend the memory for various reasons and swap may be used for heigh memory use cases when you have some not too slow alternate memory. n9 internal memory is still damn slow for swapping (if it is indeed a swap faile on disk at all).
but actually there seems to be no good reason to not add an extra GB as we can see the nexus 6 has it, the nexus 9 ha definetly room for it (it is not like pc dram module) and it is damn cheap also.
secondly, i'm not talking about multitasking when i pointed out 64bit, so why the hell are you bringing this in? beside of that on a tablet multitasking it meanwhile not so uncommen. the point is that a 64 bit os has a MUCH larger memory footprint. also such high screen resolutions add a decent amount of memory either. and finally, your argument about benchmarks proving anything related to my comment is unrelated at best. it doesn't prove anything related to my statement.
there is aboluelty no reason to prefere zram or swap over an extra GB of ram, and it seems that there is nothing that would made it difficult for htc to add it. i can only assume that they added this just collect some experience on it and nothing more.
i really don't get it. what's the purpose of your statement? showing of your lack of knowledge or celebrating fanboyship "oh cool, they skipped a 5$ GB ram but gave us zram hurayyyyy".
sounds totally sound to give a smartphone 1GB ram more, same high resoltion on a smaller screen and twice as much disk space
EDIT: but please finally tell us WHAT exactly is so "interessting" adding zram or swap instead of one GB ram? you post has no information except this little claim. one might find this decision interesting of course due to its stupidity but it doesn't look that this is the source of your interest.
Click to expand...
Click to collapse
No...you would understand what he was talking about if you understood what he meant by "architecture". The Tegra K1 chip employed by the N9, aka Project Denver, is the first in order execution CPU since...like, 1990.......This device was never designed to multitask, as the CPU itself was designed to finish tasks in order, and be damn fast at that.
Here, read up on this: http://hothardware.com/News/Nvidias-64bit-Tegra-K1-The-Ghost-of-Transmeta-Rides-Again/
Adding 1GB of RAM is useless, since 64bit really needs 4 & up to shine, it doesn't make a difference whether or not you tack on another GB.....
UAL4588 said:
No...you would understand what he was talking about if you understood what he meant by "architecture". The Tegra K1 chip employed by the N9, aka Project Denver, is the first in order execution CPU since...like, 1990.......This device was never designed to multitask, as the CPU itself was designed to finish tasks in order, and be damn fast at that.
Here, read up on this: http://hothardware.com/News/Nvidias-64bit-Tegra-K1-The-Ghost-of-Transmeta-Rides-Again/
Click to expand...
Click to collapse
i know very well how denver works and it still has nothing to do with what i said.
Adding 1GB of RAM is useless, since 64bit really needs 4 & up to shine, it doesn't make a difference whether or not you tack on another GB.....
Click to expand...
Click to collapse
that's simply not true! 64bit does not shine more orn 4GB ram or on 12GB. you need 64bit for 4GB+ ram (while 4GB actually works on 32bit with PAE). but i am not talking about when 64bit is needed to allow for more memory. i am talking about the double sized memory pointers, the bigger size ints and longs, due to 64bit! this caused all native code to consume far more memory. but as ia already said multiple times, not only the 64bit os itself eats a lot of memory it also the high resolution graphics but also the meanwhile increased resolution assets of android.
i don't say that it is actually needed to install more memory. but if they decided to add zram it seems they actually needed more memory. the point is that it is stupid to extend the memory with zram instead of just simply adding 1GB ram.
i can't say it more clearly. the stupidity is to NOT INSTALL 1GB MORE RAM BUT INSTEAD USE ZRAM TO MAKE UP FOR LACK OF MEMORY.
It doesnt need a swap file 2gb ram is enough
UAL4588 said:
No...you would understand what he was talking about if you understood what he meant by "architecture". The Tegra K1 chip employed by the N9, aka Project Denver, is the first in order execution CPU since...like, 1990.......This device was never designed to multitask, as the CPU itself was designed to finish tasks in order, and be damn fast at that.
Here, read up on this: http://hothardware.com/News/Nvidias-64bit-Tegra-K1-The-Ghost-of-Transmeta-Rides-Again/
Adding 1GB of RAM is useless, since 64bit really needs 4 & up to shine, it doesn't make a difference whether or not you tack on another GB.....
Click to expand...
Click to collapse
Arm chips didn't really start to use out of order instructions until the cortex a9, sometime around the Tegra 2 and the atrix. There were plenty, literally hundreds of android phones with cortex a7 and a8 cpu's with in order execution. (Think of the older snapdragons, the hummingbird, the omap's) Because this CPU happens to be an in order processor, doesn't mean its now a non multitasking tablet or OS. Multitasking performance should not be expected to get WORSE, with better hardware(I'm not saying it is, but it shouldn't be expected).
Yes 64 bit processors shine with above 4 gigs of ram(as far as mapping more memory), but 64 bit applications have a larger memory footprint than the same application compiled for 32 bit CPU's(uses more ram). So with the higher resolution and 64 bit OS, 2 gigs of ram may be pushing it, and it is probably why they added the swap.
No matter how you slice it, ram is always better than swap. Ram is always gonna be faster memory than a large storage device. If they thought 2 gigs would not be enough ram, swap should not have even be a consideration, just make it 3. The nexus 10 was a prime example of this due to the screen resolution and the GPU needing too much ram. Most of the 10's issues were the CPU not having quite enough power and not enough ram. Chrome would refresh pages with just a few tabs open when switching between them.
I personally would not trust a young filesystem that was initiated by Samsung.
Both of the above sounds like my data is at risk
After playing with it for a few days , I observed reload of the launcher sometimes. I am not sure if Lollipop is not yet well optimized for N9 or whatever. I think that 3GB of ram should be better.
2gb Ram is plenty it does not need the swap file
I hope the swap file ain't causing any slow downs or lag because it is reading writing to it instead of using the main ram
edgarf28 said:
The 508 MB Swap partition do not use any RAM, I think it's just an partition on the internal memory to extent the RAM with 508 MB (so basically you have 1.8 Gb RAM + 508 MB Swap)
And see attached screenshot for the AndroBench results.
Click to expand...
Click to collapse
A swap partition is just that, it swaps memory to a file system when memory or other resources are gone. Some applications will do it by default.
I'm positive you don't have a grasp on linux or *inux systems. You should read up on 'em.
I beg to differ... I'm so sick and tired of all my apps getting booted out of memory the moment they're off-screen. Even the damn launcher vanishes way too quick and takes an eternity to reload. This tablet sucks for multi taking, even though the gorgeous screen is taylor-made for it.
a user said:
i know very well how denver works and it still has nothing to do with what i said.
that's simply not true! 64bit does not shine more orn 4GB ram or on 12GB. you need 64bit for 4GB+ ram (while 4GB actually works on 32bit with PAE). but i am not talking about when 64bit is needed to allow for more memory. i am talking about the double sized memory pointers, the bigger size ints and longs, due to 64bit! this caused all native code to consume far more memory. but as ia already said multiple times, not only the 64bit os itself eats a lot of memory it also the high resolution graphics but also the meanwhile increased resolution assets of android.
i don't say that it is actually needed to install more memory. but if they decided to add zram it seems they actually needed more memory. the point is that it is stupid to extend the memory with zram instead of just simply adding 1GB ram.
i can't say it more clearly. the stupidity is to NOT INSTALL 1GB MORE RAM BUT INSTEAD USE ZRAM TO MAKE UP FOR LACK OF MEMORY.
Click to expand...
Click to collapse
Totally agree with this, I'd be happy to pay $10-$20 more for and extra 1 to 2 Gb or ram.
Then they could have gone something like 4GB Ram + zram
Would have been better
And while denver may be an In order design, its 7 way Superscalar which should outweigh the benifits of a 3 way OoOE Design for multitasking
So my question for the XDA community is why are only 3.5GB of the 4GB DDR4 available? Is this just poor optimization or mismanagement on Samsung's end?
cepheid46e2 said:
So my question for the XDA community is why are only 3.5GB of the 4GB DDR4 available? Is this just poor optimization or mismanagement on Samsung's end?
Click to expand...
Click to collapse
It's neither mate. It reserves 432mb....so that's 4gb lol
Sent from my SM-G928F using Tapatalk
I don't know about, I have desktops and laptops than run on 4GB, why would a stupid phone need that much ROM.
ilogik said:
I don't know about, I have desktops and laptops than run on 4GB, why would a stupid phone need that much ROM.
Click to expand...
Click to collapse
A PC uses DDR while a mobile uses LPDDR RAM. A PC RAM performance is considerably higher than a power optimized mobile RAM. Also, do consider it's a 64-bit processor, so it will eventually consume more RAM compared to a traditional 32-bit processor due to its 64-bit address width & more.
So a 64-bit PC using 4 GB is equivalent to a mobile running on 4 GB. And so would be the reserved memory.
Just seen that.
They advertise the compact as a 2GB RAM device, knowing that they only deliver 1,8 GB.
Anyone else seen that before?
I do not think it s a way to free up to full 2GB as advertised?
Other brands deliver 2GB if they tell their devices have, why not so z5 compact?
punkrockfan said:
Just seen that.
They advertise the compact as a 2GB RAM device, knowing that they only deliver 1,8 GB.
Anyone else seen that before?
I do not think it s a way to free up to full 2GB as advertised?
Other brands deliver 2GB if they tell their devices have, why not so z5 compact?
Click to expand...
Click to collapse
Where's the source on what you're talking about? The RAM is always going to be used up by something - the OS, launcher, etc. You're not going to turn the phone on and have exactly 2GB of RAM available.
Sure, but it says 1,4 out of 1,8 used, 3xx free.
That means Limit is 1,8 as shown under Memory, not 2 as advertised. Never noticed that on a phone before.
As soon as the device is running memory is used, but it should say out of 2,0 not 1,8?
@punkrockfan
you're a little late to the party
http://www.disk-space-guide.com/size-units.aspx
https://en.wikipedia.org/wiki/Gigabyte
https://blogs.gnome.org/cneumair/2008/09/30/1-kb-1024-bytes-no-1-kb-1000-bytes/
http://superuser.com/questions/287375/what-is-the-origin-of-k-1024
https://en.wikipedia.org/wiki/Timeline_of_binary_prefixes
Also - not sure why you'd want to specifically blame Sony for this
Coming from the technical, developer background:
you have to consider that device drivers also eat up quite some memory/storage (best example: the Galaxy S, GT-i9000: 512 MB advertised, at best 300 [384 at best] available)
it's only the device drivers, it's the kernel (system) itself that also needs memory
so you'd basically have to advertise e.g. 2 GB but plug in 3 or even 4 GB to have full access for e.g. apps
All companies define a gigabyte to be 1000MB, and a megabyte to be 1000kb, etc etc. In reality it's 1024KB per MB, and 1024MB per GB.
You never fully get 2GB, just check your computer eg. your hardrive might be 1tb big, but in reality its only somewhat over 900gb? 16gb ram might only be 15.9 gb!
Well, nice, not sure since when vienna is germany?
punkrockfan said:
Well, nice, not sure since when vienna is germany?
Click to expand...
Click to collapse
derailing the topic like a pro
Home Country vs. Service Provider vs. City
you'd know that if you had taken a look at your own profile
(I moved back some time ago)
Thanks for the notice though
The topic is...that in Windows the full RAM without any convertings of bits and bytes is shown.
Only Hard Disks have that "exchange" from 2TB to 1,8 e.g.
So I was not awaiting that on mobile RAM too.
Really ?
I gotta take a look next time I booted into Windows,
Android sort of is Unix, Linux - so that is more to be expected
yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )
punkrockfan said:
yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )
Click to expand...
Click to collapse
3096MB ?
that looks more like a 32bit OS limitation though
punkrockfan said:
yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )
Click to expand...
Click to collapse
Plus, on android some ram is reserved by GPU. Unlike dedicated graphic card on PC/Mac which got their owned ram but our GPU shared with system memory.
Same thing as onboard GPU on desktop systems so?
Well 3096 per slot, using several 4GB bars, no 32 bit limitation)