So i recently got an EVGA GTX 960 4gb, and i've been doing some overclocking. Long story short, if i use +12mv to the voltage I get the "Vrel" perfcap and that's it. If i proceed to +18mv (What it's at now) then the "VOp" cap comes into play. Is that bad? Should I turn the voltage back down, or am I safe to overvolt more? (Card's voltage is at 1.231v)

So does the "Limited by max operating voltage" mean that i should increase the voltage above +18mv, or that I should leave it/decrease it?

Alright Thanks. I thought that's what it meant, but i didn't know if that was gonna make my card turn to ash. Temps are fine though.

kwkrnu72

Sajin
vRel = Reliability. Indicating perf is limited by reliability voltage.
VOp = Operating. Indicating perf is limited by max operating voltage.
Pwr = Power. Indicating perf is limited by total power limit.
Thrm = Thermal. Indicating perf is limited by temperature limit.
Util = Utilization. Indicating perf is limited by GPU utilization.

Perfcap SLI?  I can't find any real information on it.....

"SLI GPUBoost Synchronization." is the official wording, without any additional info

http://www.techpowerup.co...cap-reason-sli.210166/

I don't think anyone knows for sure other than NVIDIA driver developers. I would guess that one card can't boost any higher and thus the other card is held back.

Looks like it may be a bug with gpu-z... http://www.techpowerup.co...erf-cap-reason.216512/

Sajin
Looks like it may be a bug with gpu-z... http://www.techpowerup.co...erf-cap-reason.216512/

I am confused. In my post above, in the link, is the text I quoted from W1zzard who acknowledged that the SLI perfcap reason exists but is not well defined.

bdary

Sajin

kwkrnu72

Sajin
vRel = Reliability. Indicating perf is limited by reliability voltage.
VOp = Operating. Indicating perf is limited by max operating voltage.
Pwr = Power. Indicating perf is limited by total power limit.
Thrm = Thermal. Indicating perf is limited by temperature limit.
Util = Utilization. Indicating perf is limited by GPU utilization.

Perfcap SLI?  I can't find any real information on it.....

I've never seen the sli perfcap before. 
 

ty_ger07
I would guess that one card can't boost any higher and thus the other card is held back.

Good guess but I don't think this is correct as all my cards boost to different clocks when ran in sli on stock vbios.

That's interesting.
 
With my two 970's, out of the box clocks, voltage, and vbios, one boosts to 1405, the other to 1366 when ran individually.  Once they're set up to run in SLI, they both run at 1366 while gaming or benching.
 
If I add a +39 to the core for both cards, they will then both run at 1405.

Yeah, some people say their cards run exactly at the same clocks when in sli, other people say their cards clock differently when ran in sli, I'm in the clock differently group.