lo all,
I recently benched 2 x GTX580 SLI. The only benchmark I couldn't run my 05-06 stable settings on was 3DMark03. Not a lockup, but a complete shutdown of the setup occurred, mostly during GT1. Only one out of 10 runs completed succesfully. Very frustrating...
Hardware:
ASROCK Z97 OC Formula (1.8bios) 4770K ES 8GB 2666C10 Corsair RAM 2 x GTX 580 296.10-327.23 driver Win7 (yes I know XP is better, but couldn't get SLi properly working) Corsair AX 1200i PSU
No idea what exactly was going on, as the GPU clocks and CPU clocks were rockstable in 3D06. Running the 580 cards at stock didn't help a bit, so we could rule that out. Switched OSses and GPU drivers, no cure either.
Only lowering the CPU clocks gave me more stability. However this should not be the case as again the above clocks were stable in other benchmarks.
One thing that increased stability was to disable the threaded optimization in the Nvidia control panel. 7 runs out of 10 passed, improvement, yet randomly still a shutdown occured.
Only way to get better stability on my setup was to lower the uncore (from 55 to 50) and reduce DRAM speed drastically ( from 2600 to 2133-2200MHz) then again could I run the CPU speed at +/-6100MHz
Has anyone else also had the same experience ? This behaviour really puzzles me...