GPU overclocking problems

naweo · July 14, 2014

Hello everyone!

Specs:

GPU: nGeforce 560 TI

MB: MSI z77ag45

CPU: 3770k-i7

Windows 7

CM storm trooper Case

PSU: corsair 750 W

I have been overclocking my GPU and using heaven benchmark. While I managed to get a stable

1087volt (powerlimits not edited, not sure if I should)
950 core mhz

2150 mhz (edited after I got stability at 950)

and temperatures only getting up to 63-64 at fan speed on 75% (Considering a less noisy replacement)

Why is it that my tests on 1.15v, since my temperatures are this low, is basically unstable at even just 975 mhz core and stock memory frequency? I see artifacts, a few spikes and stuff right before a crash in heaven benchmark, usually 40-60 second into the test.

Also, is there any way I can break the fan barrier speed at 75%?

Should I touch other parameters to fix this problem, such as the power limits?

Are there problems in general using 1.15v with this card though I can manage to keep my temperatures low?

Thanks!