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[OFFICIAL] GTX 660 (NON TI) Owners Club. - Page 220

post #2191 of 6755
I've gotta say... having been on with two gtx285s in sli for so long to now be with these gtx660s... the sli is solo much better! not a single problem that I had before with sli.

I've been using a Gt430 dedicated for physx... between hawken and b2 it really makes it worth it... but.. I can't crank it up to high physx or the gt430 chokes... killing fps. Did a little looking around and found a OEM Gt640 that has the same specs as a GTX 650.


hoping it makes a great pairing with the Gtx660s.
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post #2192 of 6755
hey guys i have a gtx 660 SC and modded the bios voltage to 1187 with a stable clock of 1202 ran heaven for hours until now i have added a 12 vlt led strip and at the same clock i get lockups like heaven just stops puts be back to desktop(no driver crashing) and then i can move my mouse but can't click on anything until i alt control delete so ya guys whats cuazing this problem oh and i hvae a corsair cx500 with 3 led fan 1 simple fan and a hyper 212 and 1 led strip so is it my psu?
post #2193 of 6755
Quote:
Originally Posted by xXTheGodfather View Post

hey guys i have a gtx 660 SC and modded the bios voltage to 1187 with a stable clock of 1202 ran heaven for hours until now i have added a 12 vlt led strip and at the same clock i get lockups like heaven just stops puts be back to desktop(no driver crashing) and then i can move my mouse but can't click on anything until i alt control delete so ya guys whats cuazing this problem oh and i hvae a corsair cx500 with 3 led fan 1 simple fan and a hyper 212 and 1 led strip so is it my psu?

That sounds like a driver crashed due to instability. Easiest thing is disconnect the led strip and retest first. Honestly heaven is what I use for a base stability test and only 3 runs, then I game to prove stability
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post #2194 of 6755
I just tried to flash a new BIOS and it didn't work for me; I believe that I softbricked my card.

I followed the instructions exactly as I could, nothing stands out to me as something that I didn't do.

After flashing was successful, I restarted and surround/Aero were both gone and EVGA Precision and Fraps didn't see my card. GPU-Z however, still saw it. But the clocks and everything were all at 0. I removed and reinstalled the drivers (320.18 before and after; maybe the driver version was unable to handle it?), and after a restart after that I had no change. So I grabbed MSI's bios for my card, flashed with the nvflash mentioned in the OP of this post (the nvflash that MSI included didn't work and said it was incompatible with 64bit systems...), restarted, and now I'm back to before I found this thread.

My machine's specs
Edited by hgpot - 5/27/13 at 7:38pm
post #2195 of 6755
Holy cow...after 35 mods...and a lots of 2k textures...at 1080p my gpu memory maxed out tongue.gif
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post #2196 of 6755
Quote:
Originally Posted by hgpot View Post

I just tried to flash a new BIOS and it didn't work for me; I believe that I softbricked my card.

I followed the instructions exactly as I could, nothing stands out to me as something that I didn't do.

After flashing was successful, I restarted and surround/Aero were both gone and EVGA Precision and Fraps didn't see my card. GPU-Z however, still saw it. But the clocks and everything were all at 0. I removed and reinstalled the drivers (320.18 before and after; maybe the driver version was unable to handle it?), and after a restart after that I had no change. So I grabbed MSI's bios for my card, flashed with the nvflash mentioned in the OP of this post (the nvflash that MSI included didn't work and said it was incompatible with 64bit systems...), restarted, and now I'm back to before I found this thread.

My machine's specs
Woops didnt notice u solved your own problem. biggrin.gif
Edited by DaPuppet007 - 5/27/13 at 11:39pm
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post #2197 of 6755
Quote:
Originally Posted by ShagNasticator View Post

Thanks I knew it would be something simple but cbf reading 218 Pages at 5 am In the morning

no problem wink.gif
post #2198 of 6755
Hello everyone.
I as well have bought the gtx 660 but the one i have is from gigabyte and while scrolling through the thread i didn't find anyone with it. (link)
While overclocking it I encountered a problem... When I increase the voltage over 150mV the GPU Clock goes down to 954 no matter what it was before.
It does this too when i set voltage to +150mV and increase the Clock by few MHz.
I had this problem both before and after flashing the modded bios on my card.
The GPU doesn't run in SLI, i use GTX260 for my secondary monitor. The Mainboard is AsRock X58 Extreme and the PSU is at 750Watt.
I have the latest drivers and i tried overclocking with several different tools with the same result everywhere(Nvidia System Tools, Nvidia Inspector, Gigabyte OC Guru).

I hope you can help me.
Thanks in advance!

edit: lost the ability to change the clock as well. Both with old and new bios.

edit 2: changing port(from DisplayPort to HDMI), changing PSU Line, Changing PCI-E Slot, Changing Monitor, Clean Installation of drivers didn't change anything.
Only if I install old drivers(310) I'm able to change clock again but in a REALLY odd fashion. The default clock it runs at is 1032 and when i try to increase it, it falls down and keeps a 127MHz offset. The highest i'm able to overclock it to is +140 Mhz and at this setting it keeps jumping between default 1032 MHz and 1045 MHz.

The worst part about this is that i can't even RMA this gpu since technically it "works". =(
Edited by Ainalcar - 5/29/13 at 1:19pm
post #2199 of 6755
Quote:
Originally Posted by Ainalcar View Post

Hello everyone.
I as well have bought the gtx 660 but the one i have is from gigabyte and while scrolling through the thread i didn't find anyone with it. (link)
While overclocking it I encountered a problem... When I increase the voltage over 150mV the GPU Clock goes down to 954 no matter what it was before.
It does this too when i set voltage to +150mV and increase the Clock by few MHz.
I had this problem both before and after flashing the modded bios on my card.
The GPU doesn't run in SLI, i use GTX260 for my secondary monitor. The Mainboard is AsRock X58 Extreme and the PSU is at 750Watt.
I have the latest drivers and i tried overclocking with several different tools with the same result everywhere(Nvidia System Tools, Nvidia Inspector, Gigabyte OC Guru).

I hope you can help me.
Thanks in advance!

edit: lost the ability to change the clock as well. Both with old and new bios.

What were your temps? Just wondering if thermals limited your boost.
post #2200 of 6755
No, i've set Fan to 70% at 50C and 100% at 60C, the gpu doesn't go over 65C.

p.s i'm using furmark for stress-testing.
Edited by Ainalcar - 5/29/13 at 1:27pm
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