Hey guys, recently I got 2 680s, and one of them is having a weird problem. The 2 of them are 680 EVGA reference cards, one with Hynix and one with Samsung RAM modules, thats the only difference between them. For testing and stability I tried furmark and the 2nd one crashes when it hits about 62-70 degres, after a bunch of troubleshooting I narrowed it down to something related in the clock speeds, temperature and fan speed, ill elaborate:
- Both have exactly the same fan curves, the good one (Hynix) works perfectly fine with the stock curve but the 2nd one (Samsung) crashes and the only workaround is to increase fan speeds so the temperature stays under 60c, it works and its stable to some degree but it should work perfectly fine with the stock curve
- When the fan curve has its stock values and just before it crashes, the clockspeed goes over 1090 Mhz but the max boost clockspeed set by the manufacturer is 1058.
- In nvdia inspector the Estimated Max clockspeed velue for the good card is 1006 and in the second one is 1071. I flashed the the good card's bios into the faulty one, no luck, reverted it later..
I tried so far DDU'ing the drivers and reinstalling them, unistalled all OC programs and reinstalling them and the only thing that worked was modifying the fan curves, although it should work without the modification just as the good card does, what can be causing this?
- Both have exactly the same fan curves, the good one (Hynix) works perfectly fine with the stock curve but the 2nd one (Samsung) crashes and the only workaround is to increase fan speeds so the temperature stays under 60c, it works and its stable to some degree but it should work perfectly fine with the stock curve
- When the fan curve has its stock values and just before it crashes, the clockspeed goes over 1090 Mhz but the max boost clockspeed set by the manufacturer is 1058.
- In nvdia inspector the Estimated Max clockspeed velue for the good card is 1006 and in the second one is 1071. I flashed the the good card's bios into the faulty one, no luck, reverted it later..
I tried so far DDU'ing the drivers and reinstalling them, unistalled all OC programs and reinstalling them and the only thing that worked was modifying the fan curves, although it should work without the modification just as the good card does, what can be causing this?
