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[OFFICIAL] GTX 660 (NON TI) Owners Club. - Page 54

post #531 of 6756
Quote:
Originally Posted by patricksiglin View Post

Did you flash your card? If so you should be able to raise it to 100%

what does it mean to flash my card exactly? I am in the process of overclocking right now, can I flash it after I overclock?
post #532 of 6756
Well I followed a guide to overclock and i did the stress tests and found out where my card fails etc etc, so I know the right settings for my core speed and memory speed. However, When i run the Furmark stress test, my core speed doesn't even go past the base clock! So, I'm guessing my gpu is locked since I can't turn up the fan past 74% nor can I go past the base clock speed. I tried to do a search to see if I have to flash my gpu before I can take advantage of overclocking or not, but I haven't been able to find an answer.


Any thoughts or advice would be greatly appreciated! thumb.gif
post #533 of 6756
Quote:
Originally Posted by Skhatri15 View Post

Well I followed a guide to overclock and i did the stress tests and found out where my card fails etc etc, so I know the right settings for my core speed and memory speed. However, When i run the Furmark stress test, my core speed doesn't even go past the base clock! So, I'm guessing my gpu is locked since I can't turn up the fan past 74% nor can I go past the base clock speed. I tried to do a search to see if I have to flash my gpu before I can take advantage of overclocking or not, but I haven't been able to find an answer.


Any thoughts or advice would be greatly appreciated! thumb.gif

Don't run furmark, nvidia drivers detect it and automatically throttle the card. Use 3Dmark11 or Heaven 4.0/Valley 1.0 for a quick check of overclock stability. Fan limit is coded into the vBIOS, if you flash it you can remove that restriction, but its not necessary, your fan will most likely never see that speed. I have a very aggressive fan profile with my overclock and it maxes out at like 62% and still keeps the card under 70*C.
post #534 of 6756
Quote:
Originally Posted by Scorpion49 View Post

Don't run furmark, nvidia drivers detect it and automatically throttle the card. Use 3Dmark11 or Heaven 4.0/Valley 1.0 for a quick check of overclock stability. Fan limit is coded into the vBIOS, if you flash it you can remove that restriction, but its not necessary, your fan will most likely never see that speed. I have a very aggressive fan profile with my overclock and it maxes out at like 62% and still keeps the card under 70*C.

Ah okay. Also, my power target on Evga Precision X can only go up to 110%, where as on YouTube I see people being able to take it up to 132%. Is that also a restriction based on my bios?
post #535 of 6756
Quote:
Originally Posted by Scorpion49 View Post

Don't run furmark, nvidia drivers detect it and automatically throttle the card. Use 3Dmark11 or Heaven 4.0/Valley 1.0 for a quick check of overclock stability. Fan limit is coded into the vBIOS, if you flash it you can remove that restriction, but its not necessary, your fan will most likely never see that speed. I have a very aggressive fan profile with my overclock and it maxes out at like 62% and still keeps the card under 70*C.

Well, I installed Heaven. Still doesn't go past the stock boost clock speed. This is quite frustrating. I do just as the guides tell me to do... :/
post #536 of 6756
Quote:
Originally Posted by Skhatri15 View Post

Quote:
Originally Posted by patricksiglin View Post

Did you flash your card? If so you should be able to raise it to 100%

what does it mean to flash my card exactly? I am in the process of overclocking right now, can I flash it after I overclock?

If you look somewhere in this thread there is a link to KGB, NVFLASH, & GPUZ with instructions on how to save your bios unlock/overclock and flash.
GPUZ can save your default bios and kgb is used to unlock it. You then need to flash it with nvflash.

Here is a good start
http://www.overclock.net/t/1330897/gtx-660-non-ti-owners-club/0_20
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Windows 7 Pro aoc e2243fwk corsair gs 700 NZXT Phantom 
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post #537 of 6756
I tried to get more than 1150 mhz on gpu.
Totally impossible!

When I overclock to +26 it gets 1150, when I get +27, +28, +29... dont get more than 1150.
When i reach +40 i get 1162 mhz, but the card TDP goes more than 104% and it crash.
I tried this in all voltages, 1.15 to 1.21, never work.
Even with the power limit at 100%, 110% or also 150%, it's impossible.
But I was monitoring the TDP when running unigine valley and: at 1150mhz and 1600mhz memory the card gets 107% even 108% TDP without crash. And I can overclock the memory to 1670Mhz, the TDP grows but the card dont crash!

I want more than 1150 mhz!
post #538 of 6756
tdrloux

here are increments to which the gpu boosts at 13 Mhz intervals

post #539 of 6756
For each boost frequency there is a certain dependency on the GPU voltage, I've checked that experimentally (flashing my BIOS 20 or more times), so for approximately 75% of ASIC quality and a 4 phase VRM one needs 1175mV for 1176-1189 Mhz GPU frequency range.
for 1200-1200Mhz there is needed 1189vM. The voltage is calculated as the median from the voltage range for a certain boost frequency. And the voltage in software monitoring is approximated also to 13 mV intervals.
For instance if you set voltage range in BIOS as 1150-1212 mV, the median will be (1150+1212)/2=1181 mV, which is monitored in software as 1175mV, as it is rounded down to it in software monitoring. If you increase lower margin to 1162mV in BIOS you will get a (1162+1212)/2=1187mV, which is monitored in software as 1189mV, as it is rounded down UP to it in software monitoring.
You may also set the desired voltage to keep it steady at certain point, for instance 1175-1175 range in BIOS will give you exactly the 1175mV in software and your GPU will surely boost (unless limited in BIOS boost table) to the frequency averaged by a combination of ASIC quality VRM quality.
post #540 of 6756
I am trying to follow the GPU flashing guide. However, whenever I try to save my bios from GPU-Z it won't let me save it as a bin file. The only option I have is to save it as a rom file. I have been trying to find a solution as to why I don't get the option to save it as a bin file for a while now. Can anyone enlighten me on this subject matter?

Getting frustrated! mad.gif
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