graft is total scam atm, volumes on KMK about 0.3-1 btc, retards choise as itself.
Definitely not.
I've been mining for two years, I know an accurate miner when I see one also. Claymore is accurate. By the way a 290x is doing about 830h's on claymore. And yes xmrig or cast will make you draw a ton more power on V7 OR V8. V7 expect 900 watts for what i posted last.