Hello,
 
My main problem is the infamous TDR issue which started to occur for couple of weeks ago without any significant changes to the OS. I have done some stability testing and it seems that TDRs occurs while VDDC is dropping on GPU-idle state (in desktop, browser) or when the performance level switching occurs. GPU is not manually overclocked (it is actually downclocked by -100MHz GPU clock offset to maintain an acceptable level of stability). I am fully aware that my GPU is probably dying, but I want to try couple of things before I give up. Since the problem could be voltage related, is there any way to get above 1.1750 V limit in eVGA Precision X? Or can I somehow force the maximum performance level, preventing GPU from jumping between different frequencies and voltages (just set the permanent values, preferably the boost ones). I read something about modyfing the BIOS, but would it allow me to set fixed frequency and voltage values?
 
I am definately sure that this is not a software issue. I have tested multiple driver versions for GTX 680 and did a fresh OS install just to be sure.
 
Setup:
CPU: Q6600
RAM: 6GB DDR2
PSU: 750W Corsair
GPU: GTX 680 4GB GDDR5
Current GPU drivers: 375.70
Power settings in NCP (global): Prefer performance mode
OS: Win 7 64bit
 
I have attached screenshot from Precision X and GPU-Z.

Hello,
 
Thank you for your reply Sajin. I don't think that I have K-Boost option since my card is non-eVGA one (it is Gainward 680 GTX Phantom 4GB GDDR5). At least I couldn't find it in Precision X options. Reason that I'm writing on eVGA forums is that I saw you've got quite many people that are familiar with GPU tweaking. Is there any alternative to K-Boost that locks GPUs frequencies and voltage permanently? I have managed to do this natively on archlinux with simple X.org setting for nvidias propriety drivers (as you can see in the screenshot below). This setting locks GPU @ boost voltage and frequencies and working perfectly as a workaround for TDR-alike issues in linux environment. Adaptive settings still causes some 3D crashes even here so I think that the same workaround should work in Windows 7.
 
 
 
Update: In Win 7, I've downloaded nvidia inspector and tried to force maximal performance level, but still it doesn't work on low GPU usage (ex. desktop):
 
nvidiaInspector.exe -setBaseClockOffset:0,0,0 -setMemoryClockOffset:0,0,0 -setVoltageOffset:0,0,162500 -setPowerTarget:0,100  -forcepstate:0,0
 
Any other ways to force maximum performance level in Windows (P0 state)?

How I could not see that. Must grab my glasses next time, lol. Thank you, K-Boost did the trick. Hopefully it solves TDR problem on the long run.