Database Users

1GHz, Both or each one?

Hi all.
I was questioning myself if the motorola xoom has two cores of 1ghz each one, Or both together have 1Ghz...?
Can Someone answer this?
p.d. Sorry 4 my bad english.

Both cores will be 1 GHZ.

solarnz said:
Both cores will be 1 GHZ.
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So, it has 2 cores of 500mhz each one?

Ifiuse said:
So, it has 2 cores of 500mhz each one?
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1 core / 1ghz.

1 CPU...two cores...1ghz per core...1ghz total
Sent from my Xoom

Thanks u. Regards.

Im an Electronic Engineer so forgive my not understanding peoples confusion with the ghz thing but ...
Frequency is a rate, its speed, this is not a volume or value, were aren't saying they have 2MB of memory, is it 2 each or 1, 1.
Time runs at 1hz for me, as it does for everyone else in the world, do we share the 1hz or is it equal?
The hardware design determines the clock frequency of a cpu core, it doesn't, matter if you have a single for 1ghz, 2 core 1ghz or 20480 core 1ghz,
As long as those cores are they same, they run on the same clock.
To ask if they share the clock time would be like saying I have a guy that can do 2 sums every time the sun rises, now I have 2 guys that can do two sums every time the sun rises, do they do ne each? No, sun rises once a day and each of them does two sums, so you get twice as much work out of them in the same amount of time.
That might raise the question, well, while dont we just have 50 cores?
Well, its expensive to manufacture, its subject to low yield, it expensive and power consuming, also software has to be written to take advantage of all the cores (if you don't have enough sums to give your two guys, they can't give you results, right?)
Anyway, point is, the frequency is a rate, and don't for a moment assume that higher frequency automatically means more powerful processing. (Its true to an extent, but only within the same architecture.)
Macbots drool as I XOOM through the Galaxy to my hearts Desire.

good analogy, I use the car & highway one... 2 cars 1 lane for single core or 2 lanes and 1 car on each lane for dual core..

so? total=1ghz for all or total=2(1ghz) im slow

lchingonl said:
so? total=1ghz for all or total=2(1ghz) im slow
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Lol, there is no _total_!
1GHz is the frequency that the CPU core clock runs at, they all run the same, on the same clock, 1 core, 2 cores, ten cores.
You need to understand this concept that "total" doesn't apply here.
This is not "1GHz per core", the core clock frequency is 1GHz, and there are two cores, they BOTH run at 1GHz.

This is the first dual core I've had, and I don't know much about the technology.
What's the difference between a dual core cpu running @ 1GHz and a single core running @ 2 GHz?

Psychokitty said:
This is the first dual core I've had, and I don't know much about the technology.
What's the difference between a dual core cpu running @ 1GHz and a single core running @ 2 GHz?
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2 cores both running at 1ghz still equals 1ghz...1 core running at 2ghz equals 2ghz.
Lets try this:
If two cars are both going down the road at 60mph, how long does it take them to go 60 miles? Even though there is 2 of them, both running the same speed, it still takes 1 hour. Hope this helps you understand.

Am I right in believing that with two 1ghz cores, there would be no benefit in speed unless the app or OS were specifically designed to utilize both cores? My understanding was that if you had two 1ghz cores, and the app was programmed to utilize both cores, each core would handle it's own load. Is this wrong?
Does two 1ghz cores truly equal 2x the speed if the app is programmed to use both?

deepducky said:
Am I right in believing that with two 1ghz cores, there would be no benefit in speed unless the app or OS were specifically designed to utilize both cores? My understanding was that if you had two 1ghz cores, and the app was programmed to utilize both cores, each core would handle it's own load. Is this wrong?
Does two 1ghz cores truly equal 2x the speed if the app is programmed to use both?
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No, it depends on the application's workload more rather than the programming. If the application can split its workload into parts that can be done in parallel, you get a speed increase. However, if the application relies completely on having to have one part that cannot be broken up into parallel-running parts, then you will get absolutely no benefit from a multiple-core processor.
Mostly, dual-core processors are about *efficiency* rather than *speed*. Here's a good analogy. It's about being able to walk and chew gum at the same time, rather than having to walk a bit, stop, chew gum for a bit, stop, walk a bit more, stop, etc.

ydaraishy said:
No, it depends on the application's workload more rather than the programming. If the application can split its workload into parts that can be done in parallel, you get a speed increase. However, if the application relies completely on having to have one part that cannot be broken up into parallel-running parts, then you will get absolutely no benefit from a multiple-core processor.
Mostly, dual-core processors are about *efficiency* rather than *speed*. Here's a good analogy. It's about being able to walk and chew gum at the same time, rather than having to walk a bit, stop, chew gum for a bit, stop, walk a bit more, stop, etc.
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In addition, to that analogy, consider the saying "two headsbare better than one." When you have two devs working together, they can get through their to-do list quicker and more efficiently than one dev doing everything alone.

CPU/Processor Showdown - HTC One vs Galaxy S4

Which processow will be better, Exynos 5 Octa or A simple Snapdragon 600 quad?
In my POV, Octa will be useless since it will be a battery hog and no apps really use that much cores and power. The S600 will be more efficient for day-to-day use since it consumes less power and will actually be used.
-.-.-.-.-.-.-.-.-
Sent from a dark and unknown place
Galaxy Tab 2 7.0 P3100

I thought the s4 had the same processor as the One, but it was clocked to 1.9? I could be wrong. I wasn't really paying attention.
Sent from my HTC One using Tapatalk 2

I'd imagine this thread will get closed.
In the meantime, read this thread and then make a judgement because the "it uses more power so it sucks" mentality is just simply incorrect.
[Info] Exynos Octa and why you need to stop the drama about the 8 cores
AndreiLux said:
Misconception #1: Samsung didn't design this, ARM did. This is not some stupid marketing gimmick.
Misconception #2: You DON'T need to have all 8 cores online, actually, only maximum 4 cores will ever be online at the same time.
Misconception #3: If the workload is thread-light, just as we did hot-plugging on previous CPUs, big.LITTLE pairs will simply remain offline under such light loads. There is no wasted power with power-gating.
Misconception #4: As mentioned, each pair can switch independently of other pairs. It's not he whole cluster who switches between A15 and A7 cores. You can have only a single A15 online, together with two A7's, while the fourth pair is completely offline.
Misconception #5: The two clusters have their own frequency planes. This means A15 cores all run on one frequency while the A7 cores can be running on another. However, inside of the frequency planes, all cores run at the same frequency, meaning there is only one frequency for all cores of a type at a time.
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Addition: I am not a Samsung fanboy by any means, however, the amount of incorrect information floating around about both of these flagships is starting to get annoying.
2nd addition: Read this as well, the big.LITTLE technology being used in the Octa is pretty amazing: big.LITTLE Processing

I hope that the overclocking or higher clock rate doesn't produce Moment-esque results.

Alsybub said:
I thought the s4 had the same processor as the One, but it was clocked to 1.9? I could be wrong. I wasn't really paying attention.
Sent from my HTC One using Tapatalk 2
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In the US that is true, they are both S600's, with the S4 having a .2ghz higher clockspeed. Many of the other S4's will have the Octa Exynos chip.

crawlgsx said:
In the US that is true, they are both S600's, with the S4 having a .2ghz higher clockspeed. Many of the other S4's will have the Octa Exynos chip.
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Ah. I see. Different hardware for different regions. Like the One X.
Even though it's eight cores it is probably complete overkill. Yet another bigger number to put on marketing. How many apps will actually use that? How many apps use four cores at the moment?
There have been some articles about multiple cores being more for point of sale than for the end user. Even if you're signing up for a contract right now I doubt that much would be making use of it in two years time. So, the future proofing argument is moot.
It'll be interesting to see. Of course the galaxy builds of Android will use the cores. With things like the stay awake feature and pip it is useful. Outside of the OS I can't see it being necessary.
Sent from my Transformer Prime TF201 using Tapatalk HD

The "octa" core processor is complete bullsh*t. Imo, 2/4 cores are perfectly fine as long as they optimize it and perfect the hardware, why stack 8 cores when only 4 work at one time and no app will use all that power.
They should've focused on design to make it look less like a toy phone and use better finish, instead.
Oh the marketing..
Not HTC or whatever fanboy, just stating my opinion.

rotchcrocket04 said:
I'd imagine this thread will get closed.
In the meantime, read this thread and then make a judgement because the "it uses more power so it sucks" mentality is just simply incorrect.
[Info] Exynos Octa and why you need to stop the drama about the 8 cores
Addition: I am not a Samsung fanboy by any means, however, the amount of incorrect information floating around about both of these flagships is starting to get annoying.
2nd addition: Read this as well, the big.LITTLE technology being used in the Octa is pretty amazing: big.LITTLE Processing
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Very good read, thanks for taking the time to post it. Surprised no-one has mentioned that we need this in our Ones. Would certainly help with the battery.

Saying its a 8 core cpu is marketing simply put.
Like it has been said only 4 out of 8 cores will only ever be enabled at once max.
The GPU on the Octa might be better then the Adreno 320 but its have to wait for benchmarks.

Nekromantik said:
Saying its a 8 core cpu is marketing simply put.
Like it has been said only 4 out of 8 cores will only ever be enabled at once max.
The GPU on the Octa might be better then the Adreno 320 but its have to wait for benchmarks.
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Benchmarks show adreno320 keeps up nicely. You won't see any real world differences besides a slightly lower benchmark score
http://forum.xda-developers.com/showthread.php?t=2191834
Sent from my ADR6425LVW using xda app-developers app

Squirrel1620 said:
Benchmarks show adreno320 keeps up nicely. You won't see any real world differences besides a slightly lower benchmark score
http://forum.xda-developers.com/showthread.php?t=2191834
Sent from my ADR6425LVW using xda app-developers app
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Those are from the S600 version.
Higher clock speed and Android 4.2 will mean its slightly ahead.
No benchmarks from the Octa version yet.

Nekromantik said:
Those are from the S600 version.
Higher clock speed and Android 4.2 will mean its slightly ahead.
No benchmarks from the Octa version yet.
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I'll just stick with the one and wait for the 4.2 update. By then we should have custom kernels to overclock ourselves
Sent from my ADR6425LVW using xda app-developers app

Here you go

Nekromantik said:
Saying its a 8 core cpu is marketing simply put.
Like it has been said only 4 out of 8 cores will only ever be enabled at once max.
The GPU on the Octa might be better then the Adreno 320 but its have to wait for benchmarks.
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Click to collapse
"Octa" is not gimmicky or for marketing.
Octa is the name of the SoC, and how it was named is nothing wrong
There are 3 implementations can be used, and one with maximum 8 cores running at the same time.
GS4 doesn't use that impletations, but it does not mean the SoC cannot be "Octa". You have a house with 8 rooms but you know to open or you wanna open 4 rooms only, the house is still an 8-room house.

hung2900 said:
"Octa" is not gimmicky or for marketing.
Octa is the name of the SoC, and how it was named is nothing wrong
There are 3 implementations can be used, and one with maximum 8 cores running at the same time.
GS4 doesn't use that impletations, but it does not mean the SoC cannot be "Octa". You have a house with 8 rooms but you know to open or you wanna open 4 rooms only, the house is still an 8-room house.
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How do you know all 8 can run at the same time? Has Samsung demonstrated that already? Any links?
Also what would be the speed if all 8 are running at the same time?
Also did you see that an Intel dual core @2GHz beat the Exynos Octa in benchmarks!!! So all 8 cores running at slower speed might not be very good actually. It might even slow down things even more...
We recently demonstrated a dual core running at 3GHz at MWC in Barcelona. That chip was able to load games at crazy speeds. A game that took 15s to load on existing Exynos Quad core was loading in just 6s with our chip!

joslicx said:
We recently demonstrated a dual core running at 3GHz at MWC in Barcelona. That chip was able to load games at crazy speeds. A game that took 15s to load on existing Exynos Quad core was loading in just 6s with our chip!
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. And used 3 times the energy to do it... Was that tested at all?

backfromthestorm said:
. And used 3 times the energy to do it... Was that tested at all?
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Its all about bragging rights really. Same as Samsung is doing with regards to Octa.
The the chip that could run at 3GHz could also very well run at 1GHz at just 0.6V (so consuming far lesser power than anything else in the market). A dual core at 1GHz is still good enough for all mundane tasks like playing videos or internet browsing etc. So in practice it would have been a very efficient solution. It was a real innovation really. Sadly the company did not have money to pour more funds into the program and has shut it.
It was demonstrated at Mobile World Congress in Barcelona in february this year.
Anyway point is, we did not need extra set of power efficient cores like Samsung is doing. We ran the same cores that could do crazy high speeds and even crazier power efficient mode! Thats a very neat solution.
Heres a press link: http://www.itproportal.com/2013/02/25/mwc-2013-exclusive-dual-core-st-ericsson-novathor-l8580-soc-crushes-competition-benchmarks/
To quote the article:
A continuous running test monitored by an infra-red reader showed that the 3GHz prototype smartphone remained cooler as it uses less energy and in some scenarios, it could add up to five hours battery life in a normal usage scenario
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hung2900 said:
"Octa" is not gimmicky or for marketing.
Octa is the name of the SoC, and how it was named is nothing wrong
There are 3 implementations can be used, and one with maximum 8 cores running at the same time.
GS4 doesn't use that impletations, but it does not mean the SoC cannot be "Octa". You have a house with 8 rooms but you know to open or you wanna open 4 rooms only, the house is still an 8-room house.
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Click to collapse
Actually, no. At least not in my opinion. Octacore means 8 cpu cores on one cpu-chip.
I would see it like this:
You have 2 houses on your lawn which are beside each other. Every house has 4 rooms. You have to switch houses to open up the rooms. Just like the Exynos "Octa" has to, since it cannot run both CPU's at the same time.
If you are in a house with 8 rooms, you cannot simply be in all 8 rooms at once. You can connect the open doors between all the rooms, and since your in that house, you can freely walk in every room. But not with that implementation.
I wouldn't call the Exynos "Octa" an Octacore, its a dual CPU system with a 2x4 cores, with the difference that regular desktop dual CPU systems can use both CPU units at once, but not like the Exynos "Octa". Still, dual quad system comes closer than a pure octacore system.
This is kind of a hybrid. Nice technology for a mobile device, but at the same time, kind of unneeded / inefficient, compared to regular quadcore systems. Even the Tegra 3 system with 4 active cores and 1 companion core for standby tasks seems more efficient (in terms of "used space" and ressources).
Ah well let's see how the supposed and so called "octacore" will score in the future...

processor differences
okay I know both processor are snapdragon 600's but why is the galaxy S4's processor clocked at 1.9 ghz and the HTC One's processor is clocked at 1.7 ghz is it just an instance of samsung overclocking the s600 or are they different variations of the same processor, I have done some research and am able to find no clear answer to this question even on the snapdragon website????????

dawg00201 said:
okay I know both processor are snapdragon 600's but why is the galaxy S4's processor clocked at 1.9 ghz and the HTC One's processor is clocked at 1.7 ghz is it just an instance of samsung overclocking the s600 or are they different variations of the same processor, I have done some research and am able to find no clear answer to this question even on the snapdragon website????????
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They should be identical. I think its just a manufacturer choice. But it could also be associated to termals or battery.
Cause Samsung took the higher frequency chips, there is the possibility that they also get the "better" chips: Lower Voltage for the same frequency. But thats just an assumption.

Exynos soc and cpu z stats

Hey,
Following a thread I read recently, I have a question...
I'm talking about the exynos version...
When the screen is on and the device is idle, should any of the cores be on "stopped" state? (as it happens in the quallcom version if I remember correctly from my i9505...)
On my n910c, on cpu z app, none of them is stopped.
On idle, 4 cores are on 400 and 4 on 700.
I think I read it somewhere that that's the idle state in this soc and that it's cores are never on stopped state (when screen is on) but I'm not sure and I can't seem to find it....
How it should behave?
Thanks.

Someone with Exynos...
How it behaves in your CPU Z app?
Thanks

gabi11 said:
Someone with Exynos...
How it behaves in your CPU Z app?
Thanks
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Mine does the same as yours. I have the N910U.

Silverblade.nz said:
Mine does the same as yours. I have the N910U.
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10x mate!
Yeah, this is probably the way it works... :good:
I also found what I mentioned I read in the past.
http://forum.xda-developers.com/showpost.php?p=56328044&postcount=784

gabi11 said:
10x mate!
Yeah, this is probably the way it works... :good:
I also found what I mentioned I read in the past.
http://forum.xda-developers.com/showpost.php?p=56328044&postcount=784
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yeah that's how Samsung implemented, I think it has to do with the multi core something, if im not wrong the first Big.Little cpus were running only 4 at the time then the other 4 will kicked in when needed, but it was causing overheating issues I believe and it was nothing good, then they came out with the new one which the 8 cores will run at all times, and unbelievable it worked and for my experience with exynos this is the best Exynos chip yet, as well as the one used on the galaxy s6, its basically the same as 5433 but the new one is based on a 14nm soc, cheers:fingers-crossed:

In my cpu z stats and in other cpu monitor apps like cpu spy, a57 frequencies never go higher then 1300 ghz, It never goes does even when playing games or multitasking, does anyone else have this? I was thinking something wrong with my device But seems like antutu benchmarks are about 50k anyway

Vichenec said:
In my cpu z stats and in other cpu monitor apps like cpu spy, a57 frequencies never go higher then 1300 ghz, It never goes does even when playing games or multitasking, does anyone else have this? I was thinking something wrong with my device But seems like antutu benchmarks are about 50k anyway
Click to expand...
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Does you phone lags? it feels slow? or something? if not don't even worry about that, the A57 is a powerful processor, remember most of the games only run on 1080p if lucky, also remember all phones perform differently, all cpus, gpus, kernels, don't worry your phone is fine mate, cheers:fingers-crossed:

yoniinfante said:
Does you phone lags? it feels slow? or something? if not don't even worry about that, the A57 is a powerful processor, remember most of the games only run on 1080p if lucky, also remember all phones perform differently, all cpus, gpus, kernels, don't worry your phone is fine mate, cheers:fingers-crossed:
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Click to collapse
No, it works fine but we on XDA are not happy with just FINE, that's why we dig forums get new info, tweak ad try new things
But that's the thing does everyone has similar observations or is it specific for my device? if you install Cpy Spy/BBS from app store and use it for some time, does it even has frequencies higher then 1300ghz ?

My ze551kl Asus zenfone 2 laser's octa core isn't working correctly..

So as you can see by these screenshots only 4 of my eight cores are working.. Is there any way to fix this??
(Here's the album i mgur. c 0 m/ a /2FWDH
Any help would be extremely appreciated..

gyropepsi said:
So as you can see by these screenshots only 4 of my eight cores are working.. Is there any way to fix this??
(Here's the album i mgur. c 0 m/ a /2FWDH
Any help would be extremely appreciated..
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What makes you think that only 4 cores are working?
I don't know in the Android world, but in PCs the applications must be written expressly to use more than one core. And the SD 615 has 4 cores that runs at 1.7 MHz max and the other 4 at 1.0 MHz max, but the frequencies could be lowered by phone makers to increase battery duration.

BubuXP said:
What makes you think that only 4 cores are working?
I don't know in the Android world, but in PCs the applications must be written expressly to use more than one core. And the SD 615 has 4 cores that runs at 1.7 MHz max and the other 4 at 1.0 MHz max, but the frequencies could be lowered by phone makers to increase battery duration.
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Yeah but I had my phone on performance mode and it's using half of the cores, if the other 4 max at 1.0mhz then why are all games that I play (3D Wise) are slow? Is there any way I could fix it? Could overclocking via CPU managing apps (using root,) work in my situation?

gyropepsi said:
Yeah but I had my phone on performance mode and it's using half of the cores, if the other 4 max at 1.0mhz then why are all games that I play (3D Wise) are slow? Is there any way I could fix it? Could overclocking via CPU managing apps (using root,) work in my situation?
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Four cores are high-performance, and four cores are low-power. The performance cores suck up a lot of battery, so not for use with background tasks. The low-power cores are useless for pretty much anything but background tasks, so they're not for use with gaming, etc. The fact that your apps are only using four cores is normal.
Also, as for your gaming performance, I've actually done some testing on this and it turns out that on the ZE551KL, the GPU is way underpowered. No amount of overclocking can fix the abysmal GPU performance on the ZE551KL. This doesn't seem to happen on other models, either, so... yeah.

@gyropepsi: yes, that's correct, the eight cores are not "equal". You have four cores for general CPU use and another four for higher CPU use. They cannot be used in the same time, they get switched to save power. It's actually called "dual quad-core".
https://www.qualcomm.com/documents/snapdragon-615-processor-product-brief
Other manufacturers have one core for low processing and four for high processing. Those phones are doing great in tests but they really suck in daily usage.
@sensi277: I would't say abysmal performance, but yes, it seems to be lower than the Selfie in some tests. However it moves VERY good for a phone, 3D tests on phones are just for kids, to brag about their phones. Nobody does real gaming on a phone.

SoNic67 said:
@sensi277: I would't say abysmal performance, but yes, it seems to be lower than the Selfie in some tests. However it moves VERY good for a phone, 3D tests on phones are just for kids, to brag about their phones. Nobody does real gaming on a phone.
Click to expand...
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?
Except, I do real gaming on my phone. Or at least, I try to. Laser GPU holds back most games, though.

Why? You don't have a laptop, desktop? Phone gaming experience is horrid no matter what. No good controls, no immersion...
Sent from my ASUS_Z00TD using Tapatalk

Here is some info about big.LITTLE processing:
https://www.arm.com/products/processors/technologies/biglittleprocessing.php
Sent from my ASUS_Z00TD using XDA-Developers mobile app

Big Core are "stopped"

hi
i am new but i cant find a way for see the firtst 1,5 ghz cores work....all cpu app i can find see me only work the last 4 core with 1,2 ghz...
please help me unlock the firt 4 core are everytime stopped thnx for help

Those kick in only when you are doing something "hard" in that time. Like benchmarking in background.

SoNic67 said:
Those kick in only when you are doing something "hard" in that time. Like benchmarking in background.
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i try run all test and i dont see one time the big core work, they are stopped every time...( try pc mark but dont work he crash after 4k encoding video) with kernel auiditior i can active all 8 core...now they work everytime and i can set governor for each processor...
but other app like cpuz dont find the first processor they see only the last 4 core... ok maybe with bench i can see all cores work but is very hard find a way for check the correct work for governor and the phone processor work fine....
if u dont have root cpu app dont find any governor...or see only one processor...

Those are limitations of the apps themselves or your OS.
I have the official N (rooted with ElementalX) and CPU-Z sees all the cores.
Also there are never supposed to work all 8 in the same time, only a group/cluster of 4 at one time, it is not a straight-up 8 core CPU. They are not "equal" in respect of performance: https://en.wikipedia.org/wiki/ARM_big.LITTLE
Different combinations of Governors and Schedulers produce different results.
PS: The newer Snapdragon 625, that is present in G5 Plus, is listed as a true 8 core: https://www.qualcomm.com/products/snapdragon/processors/625

The 617 is a big.LITTLE octa-core, not a true 8-core CPU such as the 625, like @SoNic67 said. The 617 has one cluster running up to 1.5-1.6 GHz (depending on the kernel), and one cluster that generally runs from 500 MHz-1200 MHz.
The little cluster, or the 500-1200 MHz cluster, is fine for basic tasks, such as UI, scrolling, etc. However, in games, all cores will online (or at least that's the point). Some apps are not threaded for 8 cores and thus will not utilize, or need, 8 cores.
Also, in reality, the 4 "big" cores make very little difference in terms of performance. I did 2 benches in another thread, where Antutu came up 40K with 4 cores and 45k with 8 cores. Although this seems like a large performance decrease, without the big cores the phone was cool, still ran quick, and drained far less battery.
Finally, having 8 cores also can introduce performance deficits as well, especially if your hotplug is inefficient (there may be delays in turning on cores, resulting in UI jank). I thus recommend simply leaving them off- better battery, cooling, and still decent performance.

thx for support and continue OS is amazing gw.
negusp said:
The 617 is a big.LITTLE octa-core, not a true 8-core CPU such as the 625, like @SoNic67 said. The 617 has one cluster running up to 1.5-1.6 GHz (depending on the kernel), and one cluster that generally runs from 500 MHz-1200 MHz.
The little cluster, or the 500-1200 MHz cluster, is fine for basic tasks, such as UI, scrolling, etc. However, in games, all cores will online (or at least that's the point). Some apps are not threaded for 8 cores and thus will not utilize, or need, 8 cores.
Also, in reality, the 4 "big" cores make very little difference in terms of performance. I did 2 benches in another thread, where Antutu came up 40K with 4 cores and 45k with 8 cores. Although this seems like a large performance decrease, without the big cores the phone was cool, still ran quick, and drained far less battery.
Finally, having 8 cores also can introduce performance deficits as well, especially if your hotplug is inefficient (there may be delays in turning on cores, resulting in UI jank). I thus recommend simply leaving them off- better battery, cooling, and still decent performance.
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