You need to try each one going from lowest to highest voltage until its stable. One of my 290 is very stable the lowest voltage, another one is only stable at the highest voltage. Check your ASIC quality in GPUz
Thanx for trying to help.
For my home computer , mining with two gpus , I would like to get the less noise possible , so I need the lowest temp , that imply lower voltage I think.
Could you confirm my understanding in the reading of the files name ?
=> MBA_C6711101-100_K2_AGR_STILTMP_V48.zip (DPM7 - 1.1000V) is the less voltage available.
That would be correct - IME even the highest-voltage Stilt BIOS ran a TON cooler than the stock bios, I've not had enough time to play around with the others to date.
The x.xxxxV at the end is the "default" voltage for that BIOS version, lower is better for cool but too low = card don't work right, crashes a lot, etc - and that will vary quite a bit with the specific card due to manufacturing variation.
Could you help me ?
I've tried another bios , the V40.zip (DPM7 - 1.1500V) but still not very good.
Temperature didn't went down , maybe slightly higher !
Wattage is higher for same hashrate as stock.
When I check voltage with afterburner , my two r9 290 flashed with same V40 bios show different voltage : one close to 1047mv and the other one à 1146mv !
I don't understand why , it's not normal , and maybe the lack of improvement come from here ?