As your aware I just got a Sapphire Tri-X 290 OC Edition (ref PCB), Stock clocks = 1000/1300 @ DPM 7 1.25V EVV (plus it had the -6.25mV VDDC & VDDCI offset in memory of IR3567B).
So with this out of the box setup I got about 1100/1475 & 1110/1460 but with erratic/intermittent "Blackscreen" at times recoverable others not, I didn't get the "flicker" type "Blackscreen".
So mod stage 1 was to remove the -6.25mV VDDC & VDDCI offset , this got me 1125/1475. Then I modded fan profile (mod stage 2) as temps were getting close to 80c. Then I got 1150/1475, over longer testing noted very small artifacts in 3dMark so backed GPU down to 1140 and tried to push up RAM. I got to 1485 and any higher I'd get "Blackscreen".
Then I moved to mod stage 3, here I made MEM Freq. DPM 1 & 2 to match MEM Clock 2 1250MHz. This aids RAM not shooting up to highest level at low loads / idle and lack of VDDC causing "Blackscreen", then I gained RAM of 1495MHz. This only works if you have higher RAM freq. for DPM 3 onwards, ie in my ROM is 1300 and a MEM Clock @ 1300.Mod Stage 3 HawaiiReader screenie (Click to show)
Did some 3DM FS and gaming last night at 1140/1495 (again not added VDDC or VDDCI), since this morning card been f@h for 6.5hrs (still running).
Your i2cdump has both cards, both show no VDDC only offset, no VDDCI only offset but
both have the -6.25mV VDDC & VDDCI offset, I reckon it's from the "memory" of IR3567B after viewing your posted VoltageObjectInfo for 1 card.
No info on disabling ECC for RAM.@xAcid9
Hmmm, TBH no idea why you have stuck sensor. I doubt the ROM or an option in it is cause of stuck sensor, but we have not been looking into this kind of thing.Edited by gupsterg - 2/12/16 at 5:48am