Hi Guys,
So I have a Gigabyte 3090 Gaming OC that I've been tweaking for the past few days using MSI afterburner. Stock, the performance wasn't very good, but I've been able to get around an 8-10% improvement on benchmarks by increasing the power limit from 370W to 390W (105%) and tweaking the frequency/voltage curve using the latest version of MSI Afterburner (4.6.3). All the benchmarks and stress tests I've run (Port Royal/Fire Strike/Time Spy/Superposition) have been stable. However, I recently went to run Microsoft Flight Sim, and I started getting pretty frequent crashes to desktop, even after I dialed back the overclock massively. After some analysis using GPU-Z, it seems as if the game isn't taking advantage of the increased TDP limits; rather it maxes out around 360-370W, but still seems to want to run the clocks up and so, predictably, crashes. I then ran DCS (another flight sim) and saw the same behavior in that the board power draw never gets above 370W or so. In both cases, when the power approaches the 370W mark, the performance cap reason reported in GPU-Z is PWR, i.e. the TDP limit. So obviously the demand for extra power is there; the card just isn't taking advantage of it. Anyone have any ideas on why this is the case? I find it superweird that the frequency/voltage curve sticks, but not the expanded TDP limit. In the benchmarks I run, the board draw is definitely pegged at around 390W all the way through, so somehow this quirk is only happening in the games...
Thanks for your time,
-bbsmitz
So I have a Gigabyte 3090 Gaming OC that I've been tweaking for the past few days using MSI afterburner. Stock, the performance wasn't very good, but I've been able to get around an 8-10% improvement on benchmarks by increasing the power limit from 370W to 390W (105%) and tweaking the frequency/voltage curve using the latest version of MSI Afterburner (4.6.3). All the benchmarks and stress tests I've run (Port Royal/Fire Strike/Time Spy/Superposition) have been stable. However, I recently went to run Microsoft Flight Sim, and I started getting pretty frequent crashes to desktop, even after I dialed back the overclock massively. After some analysis using GPU-Z, it seems as if the game isn't taking advantage of the increased TDP limits; rather it maxes out around 360-370W, but still seems to want to run the clocks up and so, predictably, crashes. I then ran DCS (another flight sim) and saw the same behavior in that the board power draw never gets above 370W or so. In both cases, when the power approaches the 370W mark, the performance cap reason reported in GPU-Z is PWR, i.e. the TDP limit. So obviously the demand for extra power is there; the card just isn't taking advantage of it. Anyone have any ideas on why this is the case? I find it superweird that the frequency/voltage curve sticks, but not the expanded TDP limit. In the benchmarks I run, the board draw is definitely pegged at around 390W all the way through, so somehow this quirk is only happening in the games...
Thanks for your time,
-bbsmitz