Database Users

[Q] low clock speed's

any reason for the 1.15ghz CPU speed and 400(ish)MHz gpu speed other than cost? or do you think they underclocked to save the battery? hoping we can over clock to t30l speeds

foxorroxors said:
any reason for the 1.15ghz CPU speed and 400(ish)MHz gpu speed other than cost? or do you think they underclocked to save the battery? hoping we can over clock to t30l speeds
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Deffently clocked to increase battery and reduce heat
Sent from my GT-N7000 using xda premium

No need to worry. developers will get this tablet to at least 1.5ghz or more. overclck tweaks for transformer prime should work on this also. all it'll need is root

Do we really need to overclock this? I mean I probably will anyways but a 1.3 Quad is pretty zippy by itself!

As the tegra 3's gpu compared to say the galaxy s3 (international) is fairly weak, I only hope we can OC the GPU by enough to make a difference. I am not that bothered to about OCing the cpu but I do care about the GPU

miketoasty said:
Do we really need to overclock this? I mean I probably will anyways but a 1.3 Quad is pretty zippy by itself!
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True, even at 1.0 ghz it'll do fine with most games..
I underclock my S2 to 1.0 ghz and i experienced no hiccups whatsoever.. and I'm still on dual core
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Questions go in the Q&A section

foxorroxors said:
any reason for the 1.15ghz CPU speed and 400(ish)MHz gpu speed other than cost? or do you think they underclocked to save the battery? hoping we can over clock to t30l speeds
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The Tegra 3 used in the Nexus 7 is a version of the Tegra 3 chip that didn't work within guidelines at the regular speeds, but were within guidelines for a lower speed. This is done regularly in Intel/AMD CPUs as well. That's why there are different speed CPUs in the same model family. This way they can sell the high speed CPUs at a higher cost and still make money off the CPUs that can't run as fast. Eventually the process to make the chips will be so efficient that they will artificially lower the speeds to sell as the cheaper version and that's when you can overclock like crazy and not have instability (if the CPU product cycle lasts that long).
http://en.wikipedia.org/wiki/Product_binning

Outrager said:
The Tegra 3 used in the Nexus 7 is a version of the Tegra 3 chip that didn't work within guidelines at the regular speeds, but were within guidelines for a lower speed. This is done regularly in Intel/AMD CPUs as well. That's why there are different speed CPUs in the same model family. This way they can sell the high speed CPUs at a higher cost and still make money off the CPUs that can't run as fast. Eventually the process to make the chips will be so efficient that they will artificially lower the speeds to sell as the cheaper version and that's when you can overclock like crazy and not have instability (if the CPU product cycle lasts that long).
http://en.wikipedia.org/wiki/Product_binning
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This suggests Nexus 7 probably won't OC so well. Which wouldn't surprise or disappoint me. It appears Asus dropped a lot of little features to keep cost down(which I think is a good move), and using CPU s that didn't bin well is one good way to keep cost low.
i777 w/ Siyah 3.4.3 dual booting AOKP and Shostock... yet sent from my iPad using Forum Runner

Sony experia Z ONLY QUAD-CORE 1.5GHZ ??

So I've been noticing somethin strange other then the experia z every single other high end device that will come out as of 2013 will be using a 1.7GHZ snapdragon the only high end device that will use a lower one is experia z why????? I mean the phone hasn't come out yet can't they just put the 1.7GHZ instead? why use a lower one 1.5GHZ from phones of the fourth quarter of 2012 its old tech!!!
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Calm down man, 1.5GHz quadcore is good for Android. Android really doesn't need such a high speeds
And CPU clock doesn't mean smoother device
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1.5Ghz Quad Core is not "only". And they all use exactly the same CPU which operates with 1,5-1,7Ghz speed. Clock speed isn't everything. Look at the iPhone - it uses dual core 1.2Ghz CPU - yet its performance is 5 times smoother than most quad core devices...
Dual core is more than enough for anything a smartphone might need to do - as long as you put good software on it.

gabrielpina4 said:
So I've been noticing somethin strange other then the experia z every single other high end device that will come out as of 2013 will be using a 1.7GHZ snapdragon the only high end device that will use a lower one is experia z why????? I mean the phone hasn't come out yet can't they just put the 1.7GHZ instead? why use a lower one 1.5GHZ from phones of the fourth quarter of 2012 its old tech!!!
Sent from my SCH-I510 using xda app-developers app
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Seriously? "Only" on a quad core 1.5ghz CPU for a smartphone? What are you gonna run on your phone that would require you more? Or do you just want your battery to drain more for no possible reasons? Some users even just underclock for the sake of saving battery.
If you ask me I buy this because of the features and the RAM not because of processor clock.
If you ever let me choose I would rather go for a 1ghz dual core processor with 4GB RAM than having a 2ghz quad core processor with 2GB RAM.
The only reason why I would want the Qualcomm S4 Pro processor is because of adreno 320.

A dual core is good enough dude .. this is a quad core lol
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No offense but you just sound like your trolling. Same goes for your other thread too

AK4TAY7BEN said:
No offense but you just sound like your trolling. Same goes for your other thread too
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I agree. I think he's trolling.

Riyal said:
Seriously? "Only" on a quad core 1.5ghz CPU for a smartphone? What are you gonna run on your phone that would require you more? Or do you just want your battery to drain more for no possible reasons? Some users even just underclock for the sake of saving battery.
If you ask me I buy this because of the features and the RAM not because of processor clock.
If you ever let me choose I would rather go for a 1ghz dual core processor with 4GB RAM than having a 2ghz quad core processor with 2GB RAM.
The only reason why I would want the Qualcomm S4 Pro processor is because of adreno 320.
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What would be the purpose of 4GB of RAM in a smartphone are you running Photoshop or a VM? Where did this stigma that more cores is equivalent to less efficient power use. More asynchronous cores allow for more accurate scaling of processing power to needs, thus higher power efficiency because the CPU spends less time in higher power states.

REAVER117 said:
What would be the purpose of 4GB of RAM in a smartphone are you running Photoshop or a VM? Where did this stigma that mire cores is equivalent to less efficient power use. More asynchronous cores allow for more accurate scaling of processing power to needs, thus higher power efficiency because the CPU spends less time in higher power states.
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Buddy android runs Dalvik VM and our GPU uses dedicated RAM for processing certain graphic tasks. So yes we are running a VM on our mobile phones.
Also with a proper monitoring app you could see for yourself which uses more and needs more resource here. whether processing or memory.
Didn't you even wonder why our phones consume almost 700mb RAM without even a single foreground application open? Yet it sits idle in a single core and remains in between 400mhz+ to 900mhz?
Also I didn't say that more cores consumes more power in my statement but still since each core requires power to run it should also consume more. Also I didn't mention anything about number of core I was talking about the clocks. Since the higher the clock requires more Amperes. Still underclocking your phone by 500mhz would prolly just save about 2% of your battery anyways.

you don't need higher cpu clock to get a pocket heater for this winter

My Optimus G has the same cpu an the thermal throttling is kikin in pretty fast. This 1.7Ghz S4pro will thermal throttle as fast or even faster, rendering numerical advantage meaningless.
I don't want to feed the troll but I also think dual core is good enough.

Riyal said:
Buddy android runs Dalvik VM and our GPU uses dedicated RAM for processing certain graphic tasks. So yes we are running a VM on our mobile phones.
Also with a proper monitoring app you could see for yourself which uses more and needs more resource here. whether processing or memory.
Didn't you even wonder why our phones consume almost 700mb RAM without even a single foreground application open? Yet it sits idle in a single core and remains in between 400mhz+ to 900mhz?
Also I didn't say that more cores consumes more power in my statement but still since each core requires power to run it should also consume more. Also I didn't mention anything about number of core I was talking about the clocks. Since the higher the clock requires more Amperes. Still underclocking your phone by 500mhz would prolly just save about 2% of your battery anyways.
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I have yet to see my Xperia ZL have less than 800MB of free an extra 2GB would be a total waste. And you simply stated you'd rather have a dual than a quad, peak frequency means very little except for potential processing power. Just because your CPU is capable of a higher clock speed doesn't mean it will idle any higher. Likewise the only difference between a quad with a single utilized core and a dual with a single utilized core is the minute amount if extra leakage current for the quad.
I think you meant to say that higher frequencies may need more voltage, amperage has very little to do with CPU frequency scaling.
And obviously the memory overhead for a virtualized process i.e. Dalvik VM is not even in the same league as a system VM.

REAVER117 said:
I have yet to see my Xperia ZL have less than 800MB of free an extra 2GB would be a total waste. And you simply stated you'd rather have a dual than a quad, peak frequency means very little except for potential processing power. Just because your CPU is capable of a higher clock speed doesn't mean it will idle any higher. Likewise the only difference between a quad with a single utilized core and a dual with a single utilized core is the minute amount if extra leakage current for the quad.
I think you meant to say that higher frequencies may need more voltage, amperage has very little to do with CPU frequency scaling.
And obviously the memory overhead for a virtualized process i.e. Dalvik VM is not even in the same league as a system VM.
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Buddy that 800mb is without running any foreground applications other than either Settings app or the homescreen. Like I said try running some monitoring apps on the background and try using the browser then maybe try loading some sites with lots of javascript codes in it.
Or if you like try launching 4 types of angry birds and the 2 temple run games simultaneously without killing one of them and let's see if OOM doesn't kick in and kill any of them.
Regarding CPU cores please state something that requires a quad core processor. The smoothness of the UI your experiencing is because of the type of processor your phone is using "The Snapdragon S4 Pro" even if you disable all the extra cores in it you won't feel anything different unless of course you'll run some benchmark tools or video decoding stuffs in there.
And just FYI more cores doesn't mean greater processing power. It's more cores = more processes it can handle.
And on the CPU freq clocks who said t that amperes doesn't increase on each frequency table? Please take a look at qualcomm's document on their site regarding it's processors so you would know how they calculate it. Voltage is just used to provide more electricity to power up the processor but voltage alone won't make a processor active.

This discussion is going to the wrong way.
Thread closed.

[Q]Running 8 cores at the same time

Does anyone think as I do?
Can you guys come up with a tweak to run all the 8 at the same time?
I think this could be possible whith breaking arm's big.little structure. But it will suck the battery
Just think of the benchmarks...
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That is quit an undertaking.

On 8 Cores:
Benchmarks: "It's over 9000!"
Battery life: "1 hr screen on time, battery lasts full 8 hrs!"

Benchmarks are not everything.
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Yahi said:
On 8 Cores:
Benchmarks: "It's over 9000!"
Battery life: "1 hr screen on time, battery lasts full 8 hrs!"
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Click to collapse
Could be a toggle...
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Pezmet said:
Benchmarks are not everything.
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What is everything then?
S4 has everything.software,function,apps and ...
If this is possible then no phone could be more amazing
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Here you go.
This is just a quote from AndreiLux thread. ( I'm just copy/pasting)
Heterogeneous Multi-Processing (HMP)
This is the other actual implemented function mode of a big.LITTLE CPU. In this case, all 8 cores can be used simultaneously by the system.
This is a vastly more complex working mechanism, and its implementation is also an order of magnitude more sophisticated. It requires the kernel scheduler to actually be aware of the differentiation of between the A7 and A15 cores. Currently, the Linux kernel is not capable of doing this and treats all CPUs as equals. This is a problem since we do not want to use the A15 cores when a task can simply me processed on an A7 core with a much lower power cost.
The Linaro working-group already finished the first implementation of the HMP design as a series of patches to be applied against the Linux 3.8 kernel. What they did is to make the scheduler smart enough to be able to track the load of single process entities, and with that information to schedule the threads smartly on either the A7 cores or the A15 cores. This achieves much lower latency in terms of switching workloads, or better said, switching the environments (CPUs) to the respective work-loads, and exposes the full processing capabilities of the silicon as all cores can be used at once.
You can follow the advancements of this in the publications of the Linaro Connect summits that happen every few months. The code was only published in the middle of February this year for the first working implementation equivalent in power consumption to the IKS.
•Misconception #6: Yes the CPU is a true 8-core processor. It's just not being used a such in its initial software implementations
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Read more about 8 cores at AndreiLux thread -> http://forum.xda-developers.com/showthread.php?t=2191850

sepehrthegreat-iran said:
What is everything then?
S4 has everything.software,function,apps and ...
If this is possible then no phone could be more amazing
Sent from my GT-N7000 using xda premium
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Honestly why is everyone so like "oooh my phone has this score on Antutu - I think I might have a crisis". Benchmarks DO NOT offer any sort of real world performance, they give a score based on how your phone would run if maxed out at 100% capacity 100% of the time.
This is not a good indicator of performance - nobody ever uses their phone like this, ever. Period.
My advice, drop the subject, there is no point in making all 8 cores run under heavy load at the same time unless you are playing a very resource intensive game.
Thread closed.

S600 after all ?

Post on Gsmarena:
"The motherboard has a Qualcomm Snapdragon S4 APQ8064-1AA chipset, which as it turns out is a downclocked Snapdragon 600 chipset – four Krait 300 cores (rather than Krait 200) at 1.5Ghz and Adreno 320. There are also four Elpida 512MB RAM chips, SK Hynix 16GB eMMC storage, a Wi-Fi a/b/g/b and BT4.0 capable Qualcomm chip and an Analogix SlimPort transmitter."
PS: Sorry if this piece of info was clarified somewhere else in the forums, I did not found it.

Yes it is a downclocked s600 which comes with krait 300 and lpddr3 ram.
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Yeah, this is a fairly good explanation of why these things are so battery efficient and smooth.

Anybody excited to kick this baby up to stock speed and see how she flies
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swagstr said:
Anybody excited to kick this baby up to stock speed and see how she flies
Sent from my Nexus 4 using Tapatalk 4 Beta
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It's not exactly a 1.9GHz SD600 (APQ8064T, APQ8064AB) downclocked, but a Krait 300 variant (APQ8064-1AA) that is intended to run at 1.5GHz, so overclocking I'd imagine would come with plenty of throttling and battery consumption.
It really is the perfect HW for current generational need, it's not like we can do pro-grade stuff that needs Core i5 power, so it's best using the stock clock which is well balanced between performance and battery life.

Good suff
Sent from Nexus 7 FHD from XDA Premium HD

BoneXDA said:
It's not exactly a 1.9GHz SD600 (APQ8064T, APQ8064AB) downclocked, but a Krait 300 variant (APQ8064-1AA) that is intended to run at 1.5GHz, so overclocking I'd imagine would come with plenty of throttling and battery consumption.
It really is the perfect HW for current generational need, it's not like we can do pro-grade stuff that needs Core i5 power, so it's best using the stock clock which is well balanced between performance and battery life.
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I read it was a 1.7Ghz model... Must have been misinformed. She's a beast nonetheless.
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swagstr said:
I read it was a 1.7Ghz model... Must have been misinformed. She's a beast nonetheless.
Sent from my Nexus 4 using Tapatalk 4 Beta
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I can't imagine overclocking to 1.7 would drain anymore than a percent or 2 of total battery consumption. With the current setup it looks like it can even be done with the same voltage settings to me.

Info from my Nex7
Sent from my Nexus 7 using Xparent Green Tapatalk 2

conan1600 said:
I can't imagine overclocking to 1.7 would drain anymore than a percent or 2 of total battery consumption. With the current setup it looks like it can even be done with the same voltage settings to me.
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I mean, I'm not the type to OC obsessively. I mean, underclock = better battery... But if we could bump up to "stock" it prob wouldn't be that bug of a difference. BUT apparently this model of the S600 is supposed to run at 1.5. I'll probably keep it there.
Sent from my Nexus 4 using Tapatalk 4 Beta

On Wikipedia it says that the APQ8064-1AA has a way faster memory speed than the S600 in the HTC One (1600MHz DDR3L 12.8 GB/sec vs. 533MHz LPDDR3 8.5 GB/sec).
I don't know if I can trust it, but...

swagstr said:
I mean, I'm not the type to OC obsessively. I mean, underclock = better battery... But if we could bump up to "stock" it prob wouldn't be that bug of a difference. BUT apparently this model of the S600 is supposed to run at 1.5. I'll probably keep it there.
Sent from my Nexus 4 using Tapatalk 4 Beta
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Underclocking doesn't necessarily lead to a better battery life. It depends on the efficiency at the actual frequency. If you underclock, the chip needs less current but needs more time to finish the work load because it is slower. So what matters is total energy consumption: W = U * I * t (Voltage * Current * time). So to save energy, the current has to decrease more than the time increases for a given workload. Also we can see that decreasing the voltage (undervolting) also saves energy (in this case we don't loos calculation speed because the frequencies are untouched)

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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Click to collapse
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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Click to collapse
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.
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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...
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Here is some info about big.LITTLE processing:
https://www.arm.com/products/processors/technologies/biglittleprocessing.php
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