Vega 64 here.
All the numbers below are dual mining eth+dcr.
I also feel like the blockchain driver hashrate in Claymore is not real. Two weeks of mining on ethermine with blockchain drivers and stuck at 24hr avg of 32 MH but reported is always 37 MH. Perhaps that is expected? 32 MH is what I get with non-blockchain drivers and at least over 48 hours I got 24 avg of 32MH, perhaps that was luck?
I run at -22% power and otherwise leave clock speed and voltage alone. Not by choice. Any changes to voltage wrecks hashrate.
On blockchain drivers. Anytime I adjust any voltage or clock speed on either core or memory the cards hashrate drops ~-3MHs and gets stuck there. Memory locks to 800Mhz on anything higher than 945Mhz. I have not tried non-blockchain drivers. Given I hear folks are hitting 40+ with non-blockchain drivers in recent news I might have to give it a try.
blockchain drivers have buggy clocks/voltage control and monitoring but there IS a way to make a serious downvolt without loosing the speed. As I already posted in vega thread - 44.2 mhs @ 160watt from the wall (1408gpu/
[email protected]).
There IS a big problem to make clocks low with this drivers so I still need to keep them high (1408mhz) and this is bad for dual-mining.
To be stable at 1408gpu/1100hbm2 in dual mode I need 0.975v core voltage and this leads to high 300watt consumption (43eth+240lbc)
new 17.8.2 and 17.9.1 drivers have clocks/voltage issues fixed but speed is not so good and you need some hack to keep memory oc (1100 instead of 800) when running low gpu clocks.
Max I was able to get is 43 mhs @140-150 watt (1000gpu/
[email protected]) and 41mhs+210lbry @230watt (1300gpu/
[email protected])
