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?
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It's neither mate. It reserves 432mb....so that's 4gb lol
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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.
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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.
Related
So, the Transformer uses 1 stick of DDR2 RAM which is 1GB. I'm assuming it only has one slot for RAM anyways. But I know there are 4GB DDR2 sticks available. So why couldn't we manually do it? Sure, the thing seems more sealed shut than a laptop/netbook... So anyone know what speed the RAM is?
Sure, 1GB of RAM is more than enough for Honeycomb, but I'm thinking ahead; when Windows 8 is available, when we can run Ubuntu natively, and of course do other crazy, thought-provoking things.
You can never have enough RAM!
Wow that sounds like a really good idea.
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Memory is soldered to the board. Memory requirements for Android and Linux are far less than those required by Microsoft OS.
I am almost 100% certain that you cannot upgrade the RAM in the Transformer. With most modern mobile devices the ram module is directly soldered to the motherboard and not intended to be replaced.
Tf does not use a memory stick,but a module soldered to the board. In addition, the processor / OS may not support larger RAM space.
Rumbleweed said:
Tf does not use a memory stick,but a module soldered to the board. In addition, the processor / OS may not support larger RAM space.
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Oh shoot that is right as well. Tegra 2 can only support up to 1 gig of RAM.
Hello,
I just bought a nexus 10 and I have a question about the RAM amount. It's supposed to have 2GB of RAM but in my device it show only 1.23GB....
Is it normal? In my nexus 4 it shows 1.83GB.
Thanks and best regards.
Forget it. I just read that 800MB from the RAM are reserved for the GPU. Like a ****ing laptop...
Uhh...
http://forum.xda-developers.com/showthread.php?p=40030815
http://forum.xda-developers.com/showthread.php?t=2204404
http://forum.xda-developers.com/showthread.php?t=2146679
http://forum.xda-developers.com/showthread.php?t=2146554
http://forum.xda-developers.com/showthread.php?t=2008146
Edit: took me too long haha
the_boo said:
Uhh...
Edit: took me too long haha
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Thank you very much for your time.
2 gb = big lie from manufactures
400 mb = true
Sent from my Nexus 10 using xda app-developers app
samwheat said:
2 gb = big lie from manufactures
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Not really. They are telling the truth that there is 2GB of RAM installed. Just hate that almost half of it isn't usable by the intended purpose...
Should of just thrown 2.8GB of RAM on the board and gave 800MB directly to the GPU.
It isnt just the Nexus 10 that has this shared memory, most phones and tablets do. There are specific chipsets that have their own dedicated vram, like Tegra 3. Having dedicated vram chips has to do with how the memory controller is designed in the chipset architecture.
Okay so this is rarely talked about, which I'm shocked, but the Droid Turbo is 64bit. It's on Motorola's official website spec sheet (scroll to the bottom). What do you guys think? What are the benefits (if any since its not 4GB). Why has this been a huge oversight?
http://www.motorola.com/us/droid-tu...&utm_campaign=5152763&PublisherName=Skimlinks
tnt2sniper said:
Okay so this is rarely talked about, which I'm shocked, but the Droid Turbo is 64bit. It's on Motorola's official website spec sheet (scroll to the bottom). What do you guys think? What are the benefits (if any since its not 4GB). Why has this been a huge oversight?
http://www.motorola.com/us/droid-tu...&utm_campaign=5152763&PublisherName=Skimlinks
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It might be 64-bit memory interface, but KK is not 64-bit, nor is the SD805.
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I decided to check more into it and found this website.
http://www.anandtech.com/show/8035/qualcomm-snapdragon-805-performance-preview
"The memory interface on S805 features two 64-bit LPDDR3-800 partitions (4 x 32-bit external interfaces), each capable of supporting 1600MHz datarate LPDDR3 for an aggregate peak theoretical bandwidth figure of 25.6GB/s."
Is that what they are talking about? Anyone care to explain what that means, because I'm completely lost. I'm assuming it has to do with RAM?
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tnt2sniper said:
Okay so this is rarely talked about, which I'm shocked, but the Droid Turbo is 64bit. It's on Motorola's official website spec sheet (scroll to the bottom). What do you guys think? What are the benefits (if any since its not 4GB). Why has this been a huge oversight?
http://www.motorola.com/us/droid-tu...&utm_campaign=5152763&PublisherName=Skimlinks
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This:
Hemlocke said:
It might be 64-bit memory interface, but KK is not 64-bit, nor is the SD805.
Sent from my iPad Air 2 using Tapatalk
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graymonkey44 said:
I decided to check more into it and found this website.
http://www.anandtech.com/show/8035/qualcomm-snapdragon-805-performance-preview
"The memory interface on S805 features two 64-bit LPDDR3-800 partitions (4 x 32-bit external interfaces), each capable of supporting 1600MHz datarate LPDDR3 for an aggregate peak theoretical bandwidth figure of 25.6GB/s."
Is that what they are talking about? Anyone care to explain what that means, because I'm completely lost. I'm assuming it has to do with RAM?
Sent from my XT1254 using XDA Free mobile app
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It is referring to RAM, not to the processor itself. The 805 is the last 32 bits processor for Qualcomm, maybe next year we will see the 808 and 810 who are supposed to be 64 bits.
:fingers-crossed:
What will a 64 bit processor do for your smartphone experience that 32 cannot accomplish?
bwheelies said:
What will a 64 bit processor do for your smartphone experience that 32 cannot accomplish?
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At this point, nothing. Actually, in terms of needs, a phone wouldn't need more than a dual core and 2GB on RAM, most of the apps are not even optimized for multiple cores, but you know, marketing and specs race...
:silly:
64 bits allows two big things - address memory more than 4GB and gives you larger registers so if the OS/app is 64bit it can basically work faster at the same clock speed. It will make a difference but its not something to worry about.
How many more posts need to be made about this?
graymonkey44 said:
"The memory interface on S805 features two 64-bit LPDDR3-800 partitions (4 x 32-bit external interfaces), each capable of supporting 1600MHz datarate LPDDR3 for an aggregate peak theoretical bandwidth figure of 25.6GB/s."
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Click to collapse
This is exactly right. We get higher memory speeds from our RAM. Considering this is directly feeding our Adreno chip it's important. Just like with AMD APU's the higher the RAM speed the higher the GPU performance. Since we're pushing 1440p this is beneficial. For any other task this is negligible.
PLEASE STOP WITH MORE THAN 4GB OF RAM TALK Nobody needs more than 3.5gb 64 bit allows on a phone.
The biggest advantage with 64bit is ARM's v8 instruction set. We'll be able to do more per each cpu cycle.
Please read. http://www.androidcentral.com/why-64-bit-processors-really-matter-android
The Nexus 10 is suppose to have "2GB" of ram, but my Nexus 10 only have "1099"
The Nexus 10 is suppose to have "2GB" of ram, but my Nexus 10 only have "1099"
what is problem?
android 5.1.1
Round it up and it's 2gb
Mine is also showing 1GB of Ram and its runs slow. Is it supposed to have 2?
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In later software releases, they decided to allocate more of the ram to the video. Search this forum for a more detailed answer if interested.
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if i recall correctly, about 900mb is reserved for the gpu.
veitograf said:
if i recall correctly, about 900mb is reserved for the gpu.
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I remember finding this out a few years ago and being pretty upset at the time. The tablet advertises 2GB of RAM, and yet about 1GB of it is only usable for the expected advertising purpose.
It's like me advertising my computer has 12GB of RAM, meanwhile, 4GB of that is dedicated to the GPU (which on it's own isn't really a problem, but it would make more sense to advertise 8GB)
Even then it would still be 12GB.
Let me get a little technical.
If you have an APU based PC, the GPU is on the same die as the processor. So when you use the GPU portion of the APU, it will use the RAM. How much? It depends on the load.
You can still use all of it though, so it isn't a problem. When you aren't using the GPU, all of your RAM is available.
Hi
just ran CpuZ on my Exynos model and it indicates:
Total Ram 3580MB (1190 available at the time of the test)
Internal storage 24.86GB
I know about the 1000 vs 1024 story, but even with that in mind, those figures look quiet far from the numbers announced (4GB & 32GB) by Samsung???
fastmike said:
Hi
just ran CpuZ on my Exynos model and it indicates:
Total Ram 3580MB (1190 available at the time of the test)
Internal storage 24.86GB
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I'd also like an explanation. I've no doubt there are 4gb of memory soldered onto the motherboard, but I'd like to know why only 3.5gb are reported available.
In 32-bit days, before Lollipop and ArmV8 architecture, devices always reported a maximum of 3.5gb available because that was all that could be used on a 32-bit system. I'm wondering if this ram reporting issue is due to some kind of 32-bit limitation on our 64-bit devices.
If anyone really knows the technical reasons for this, I'd like to understand what's going on, just to satisfy my curiosity.
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Is some of the RAM reserved for the graphics chip, like a PC has system RAM and video RAM for the GPU?
Some of the RAM around 512mb is allocated to the GPU, and for the storage, 8gb is used for android system partition