I believe this depends on the current shape of the curve. not being fully utilized) and cant boost higher because the boost clocks are limited by voltage, although it can happen at max load also. 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. vREL usually happens when the GPU is not at max load and you are NOT power limited (e.g. If I add a +39 to the core for both cards, they will then both run at 1405.
#GPU Z PERFCAP REASON VREL PC#
When monitoring with gpuz the PerfCap reason is always VRel, which when I mouse over it says Limited by. Quiet PC With 2 TFLOPS GPU for BOINC OR FOLDING, Easy Installation, Almost Fanless: WARNING:I AM IN NOT IN ANYWAY RESPONSIBLE FOR ANY DAMAGE DONE TO YOUR HARDWARE BY FOLLOWING THIS GUIDE. Once they're set up to run in SLI, they both run at 1366 while gaming or benching. Hi folks, I have an MSI Armor 1060 6GB card. but I dont get that, only the VRel, Reliability Voltage. What the heck does this mean VOp is operating voltage which I think I understand, basically its not getting enough total voltage. With my two 970's, out of the box clocks, voltage, and vbios, one boosts to 1405, the other to 1366 when ran individually. When monitoring with gpuz the PerfCap reason is always VRel, which when I mouse over it says Limited by Reliability Voltage. 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. I would guess that one card can't boost any higher and thus the other card is held back. Perfcap SLI? I can't find any real information on it. Indicating perf is limited by GPU utilization. Indicating perf is limited by temperature limit. Indicating perf is limited by total power limit. Indicating perf is limited by max operating voltage. When i restart pc it seems to fix this PwrThrmVrel perfcap and i am getting only VREL from beggining of benchmarks. TDP ,clocks,temps are normal during this moment like you see on a screen. Temps of GPU are fine 50C, so i dont know why it sometimes ( not always. But i create topic, to know why i have that perfcap reason for 10-15 seconds after starting game/benchmark. After a moment stabilize and will be Vrel to infinity. Indicating perf is limited by reliability voltage. When i start some game or benchmark GPUZ sometimes ( not always, depend on run ) showing perfcap PWRThrmVREL during first seconds after starting game or benchmark. Bdary Sajin kwkrnu72 Sajin vRel = Reliability.