Quote from: rpg on January 19, 2017, 05:16:26 AM

Quote from: adaseb on January 19, 2017, 03:58:10 AM

Quote from: TimLev on January 19, 2017, 01:29:46 AM

Interesting fact: after modification timings Gigabyte HD7950 gives stable ~330H/s with 1% rejected. (1190/1470) - Pic 1

If increase mem frequency up to 1500, GPU gives ~361 H/s. But about 15% of rejected. In log file appears strings of buffer overflow. - Pic 2

Pic 1

Pic 2

What does this buffer overflow mean ? Obviously, hashrate indexes is not very accurate ?

What voltage do you have to overvolt to get it stable at 1190 Mhz core?

would love to know that too. my fully oc msi 7950 only gives me 260, those numbers are what i get with a 290x modded as 390x

The most under stock voltage is maybe 1100mhz core clock or so. With 1190mhz I am guessing he needs it running at 1.25V or 1.30V, which is never a good idea on any Gigabyte Windforce GPUs since the triple fans are very weak.

And I am sure that would pull very close to 300 Watts at the wall from that 7950.