Graphic Card Overclock List and Discussion

[topgear]

yes in most games this is the scenario.

check here Nvidia GT640m performance
The difference seems to be around 25%.
That gt650m has around 200Mhz higher clock.!!

__________________________

Btw , I flashed the BIOS with a modded FMW , and the clock speed bumped for stock , but the turbo still stuck at 710Mhz.
MSI afterburner doesn't work with it. Only the Nvidia overclocking utility works with it.

After ~10% bump in memory and core clock , its still stable at around 75C.

Today I increased the Clock by 120Mhz , and while playing "GHost recon Future Soldier " I noticed the frame rate increased by 2-3 Frames per Sec. [From 19FPS to 23FPS]. At 1366x768 on full details.

Additionally I played the same game(GRFS) on Samsung Np550 (Ci7) with GT 650m and looks like that it performed even below the GT640m [around 2-3 Frames less/sec.] At same resolution and settings.
Even though , its a better card.

both laptops has same config specially the CPU ?

 

[Hrishi]

Yeah , except the 8GB DDR3 1600Mhz on Samsung vs 4GB DDR3 1333Mhz on Acer. [I don't think RAM would make that difference.Even if it did , then should have been in Samsung's favor]
CPU on both of the'm is same COre I7 3610QM.

Infact today , I came across notebookcheck.net's becnhmark results for this game and it also displays the same result that GT640m is faster at higher resolution than GT650m. !!!!!!!!


Check here :
GT650m

GT640m
-------------------------------------
Call of Duty Black Ops : At Low and Medium-High , [Except Ultra].
GT640m surpasses GT650m by ~10%. [Here Gt650m seems to be clocked ~750mhz , still higher than GT640m and both are GDDR5.]

Config : Intel Core i5 3317U 1.7GHz
GeForce GT 640M (645 - 709MHz), 1024MB (1000MHz) GDDR5, ForceWare 306.97
4096MB RAM

VS Config : Intel Core i5 3360M 2.8GHz
GeForce GT 650M (745MHz), 1024MB (1000MHz) GDDR5, Boost: 835 MHz
8192MB RAM.

Frames rates : 88.1FPS(GT640m) vs 75.7FPS(GT650m).
______________________________________________________

Game : GHost Recon Future Soldier [Medium Settings.]

Config : [X] Aspire M3-581TG
Intel Core i7 2637M 1.7GHz
GeForce GT 640M (709MHz), 1024MB (900MHz) DDR3, 310.61
4096MB RAM
Vs
Config : [X] Fire DTX (MSI MS-16GA)
Intel Core i7 3610QM 2.3GHz
GeForce GT 650M (745MHz), 2048MB (1000MHz) Boost: 835 MHz, GDDR5, Optimus, ForceWare 295.93
8192MB RAM

Difference in Frame rates : 25FPS[gt640m] VS 22.2FPS[gt650m].

_____________________________________________________________
Game : Mass Effect 3 [Low Settings].

Config : Intel Core i7 3610QM 2.3GHz
GeForce GT 650M (810MHz), 2048MB (900MHz) DDR3 1333MHz, 295.55
16384MB RAM
Vs
Config :
[X] Aspire M3-581TG
Intel Core i7 2637M 1.7GHz
GeForce GT 640M (709MHz), 1024MB (900MHz) DDR3, 296.11
4096MB RAM

Difference is frame rates in 0. THey both perform the same at this setting.@60FPS.

____________________________________________________________________
These were some of the games .
This weird difference in FPS at various settings seems confusing to me. ANy reasons for them ?????

 

[gagan_kumar]

GPU : Sapphire HD7870 GHz Edition

GPU Stock Speed : 1000 Mhz
GPU Overclocked Speed : 1226 Mhz
GPU Core Volt : Cranked to 1.3 V

VRam Type : GDDR5
VRam Stock Speed : 1200 Mhz
Vram OCed Speed : 1396 Mhz
VRam Volt : Stock

Cooler : Stock
Bios Version : Stock
Software Used for OC : MSI Afterburner

Additional Notes if any :
View attachment 9362

that is even higher than 7950........

 

[Hrishi]

These screenshots were taken while running Crysis 3 at 1366x768 , with everything maxed out.
I was getting 5-7 FPS w/out overclocking , and around 10-11 FPS with overclocking.

*www.thinkdigit.com/forum/attachments/overclocking/9699d1364528378-graphic-card-overclock-list-discussion-snip1.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9700d1364528401-graphic-card-overclock-list-discussion-snip2.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9702d1364528428-graphic-card-overclock-list-discussion-snip4.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9701d1364528415-graphic-card-overclock-list-discussion-snip3.jpg

 

[topgear]

cool temps and you've used bios mod or what to change the stock clock speed of GT640M ?

 

[Hrishi]

cool temps and you've used bios mod or what to change the stock clock speed of GT640M ?

Yep its the BIOS mod by "Svl" which unlocks the GPU for overlocking beyond the 709Mhz limit(turbo).

GT640M as such runs at ~650Mhz/900Mhz and can boost upto 709Mhz in turbo. But After overclocking I was able to push it upto 860Mhz and 1000Mhz memory.

The maximum temperature recorded while playing graphic intense games was ~85C at max for the GPU. Although it touched 95C for the CPU package[Without using Cooler].

However ,since I am using a Home-Made DIY cooler that I was able to construct using a CardBoard-Box and three 50MM desktop Fans running at more than 2500RPM/each blowing air directly into Laptop vents , the temp. was locked under 75C for GPU , 38C for HDD and 86C for CPU after overclock.

TopGear , which benchmark should be best suited for measuring practical performance difference for the GPU ?

 

[topgear]

great .. your OCed cpu running at what speed ?

For measuring practical performance use some in-game/ game benchmarks suite .. like Crysis/Crysis 2 Benchmark tool, RE5+RE6 Benchmark Suite, AVP Benchmark Suite, LP2 Benchmark Suite, Sleeping Dogs and Metro 2033 in game Benchmark etc.

 

[Hrishi]

great .. your OCed cpu running at what speed ?

For measuring practical performance use some in-game/ game benchmarks suite .. like Crysis/Crysis 2 Benchmark tool, RE5+RE6 Benchmark Suite, AVP Benchmark Suite, LP2 Benchmark Suite, Sleeping Dogs and Metro 2033 in game Benchmark etc.

the temp. was locked under 75C for GPU , 38C for HDD and 86C for CPU after overclock.

Oh , sorry I meant After Overclocking the GPU and not the CPU. I was afraid to O'clock the CPU and also felt that its needless to do so. It boosts itself to 3.1GHz at all 4 cores whenever required , so I don't think O'clocking CPU will make a big change in FPS.
I have used the CI5-2500K and the performance seems pretty much same for the Ci7 3610QM.

I think , I have Crysis 2 . I will try to use its inbuilt b'Marking then,

 

[topgear]

thanks for the clarification and Crysis 2 has no inbuilt benchmark .. you ned to use Adrenaline Crysis 2 Benchmark tool
Adrenaline Crysis 2 Benchmark Tool 1.0.1.14 BETA | HWlab

 

[Hrishi]

thanks for the clarification and Crysis 2 has no inbuilt benchmark .. you ned to use Adrenaline Crysis 2 Benchmark tool
Adrenaline Crysis 2 Benchmark Tool 1.0.1.14 BETA | HWlab

Oh thanks..but. I think I am having Crysis and Crysis Warhead and Crysis 3 but not Crysis 2. , I thought Warhead is Crysis 2 :lolz:.
Any of the mentioned above having similar tools ??

cool temps and you've used bios mod or what to change the stock clock speed of GT640M ?

Okay , today I stepped up the performance by boosting the Memory and Shader clock again.
This time took it upto 890Mhz and 1040Mhz memory for the GPU from previous of 858Mhz and 1000Mhz.

The Avg.Frame rate for NFSMW Reboot ,without overclocking at 710/900Mhz were : Frames : 5479 Time(ms) : 174051 Min : 22 Max : 61 Avg. : 31.479.
Actually its already overclocked a li'l due to the BIOS mod , its stock clock is already at 710Mhz instead of ~650Mhz , so consider the base clock at 710Mhz for reference.

Now after taking the frequency to 890Mhz/1040Mhz the Frame Rates for same race and same settings were :
FRAMES : 7934 TIME(MS) : 220117 mIN : 24 Max : 62 Average : 36.044.

The temperature and reading are in the screenshots.

And the game was played at maximum settings possible for 1366x768 resolution.
As per Notebookcheck.net the GT640m delivers avg. FPS of 27 and the GT650m delivers an avg. fps of 34.

Well the GT650M was obviously DDR5 variant but with lower clocked 750Mhz cores.


Edit/Update : I underclocked the GPU to match the company default speed of 650Mhz from 710Mhz , and the frame rates were
Frames : 6463 Time : 222364 Min : 19 Max : 62 Avg. :29.065
Screenshots


So there's a practical gain of ~7FPS in the game at highest settings. (Approximately 20-25% increase from the stock.)
*www.thinkdigit.com/forum/attachments/overclocking/9777d1364883121-graphic-card-overclock-list-discussion-nfs.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9774d1364882959-graphic-card-overclock-list-discussion-cpu.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9778d1364883129-graphic-card-overclock-list-discussion-nfsss1.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9775d1364883097-graphic-card-overclock-list-discussion-new-oc-results.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9779d1364883138-graphic-card-overclock-list-discussion-safsdfasd.jpg
*www.thinkdigit.com/forum/attachments/overclocking/9776d1364883112-graphic-card-overclock-list-discussion-nfs-high.ss.jpg

*www.thinkdigit.com/forum/attachments/overclocking/9780d1364899591-graphic-card-overclock-list-discussion-3dmark11.png
3D Mark Vantage 11 scores after and before O'clock in performance mode @ 1280x720p using basic Edition..

 

[mandarpalshikar]

Asus HD7950 DirectCU II @ 1100/1550

Put hands on OCing after a long time. Will push the card further by increasing power limit. I was able to achieve 37.5% increase in GPU clock and 24% on Mem clock as of now.

Tested On -
CPU - Core i5 3570k @ 4.2 GHz
Cooler - Corsair H80
Mobo - Asus Maximus V Formula
PSU - Corsair AX850
RAM - G.Skill Trident-X 16GB Kit (f3-2400C10D-16GTX) 2400MHz running @ 10-12-12-31-2N @ 1.65V
SSD - Corsair Force 3 Series 60GB
HDD - Seagate Barracuda 1TB


GPU Info -
GPU : Radeon HD7950 (Non-Boost)
Manufacturer and Model Name : ASUS HD7950 Direct CUII 3GB


GPU Stock Speed : 800 MHz
GPU Overclocked Speed : 1100 MHz
GPU Core Volt : 1131 mV


vRam Type : DDR5
vRam Stock Speed : 1250 MHz
vRam OCed Speed : 1550 MHz
vRam Volt : Stock


Cooler : Stock (Direct CUII)
Bios Version : 015.017.000.001.000000 (113-C810100-116)
Software Used for OC : MSI AfterBurner

*i.imgur.com/ll4NNtw.jpg

*i.imgur.com/ooJxs0H.jpg

@topgear - please update my results

 

[topgear]

done

 

[sam_738844]

@TG , what are the rules and standards to post the benchmarks like above? i'm bit interested posting some of my own rig's.

 

[mandarpalshikar]

@TG , what are the rules and standards to post the benchmarks like above? i'm bit interested posting some of my own rig's.

Rules are noted in first post of this thread by topgear -

*www.thinkdigit.com/forum/overclock...rd-overclock-list-discussion.html#post1563333

Try posting one... if any doubts, I am sure all of us here will chip in with our two cents.

 

[topgear]

@TG , what are the rules and standards to post the benchmarks like above? i'm bit interested posting some of my own rig's.

I'm crossing fingers to see some results from Nvidia gpu users so like mandarpalshikar said follw the first post and post your gpu OC

 

[sam_738844]

i will try today, i have to download 3D mark 11 for that, i have Unigine valley and 3D mark 2013 only. Also i have a laptop GPU on which i cant mod BIOS, will just do clock alter. will give it a shot

 

[topgear]

^^ any update on this ?

 

[sumonpathak]

6800K+GTX 680 results chalega?

 

[sam_738844]

^^ benchmarks posted. Any comments? updates? suggestions?

 

[mandarpalshikar]

^^ benchmarks posted. Any comments? updates? suggestions?

Considering you are ocing on a laptop.... results are remarkable. I can see you are in jakarta... whats the ambient temp you are maintaining inside your house which ocing? Deepcool X6 is a laptop cooling pad right? so is one of the blowers on it directly situated on top of your GPU fan when its connected at base?

*Update - just checked bottom of your post and got to know ambient temp.