I red a lot about people getting over 700 kh/s with a r9 280x. I got 2 r9 280x Powercolor but cant get over 550kh/s per card.
I have tried out every setting, dont know what to do.
My system:
Mainboard: ASRock 990FX Extreme3 AMD
Processor: AMD FX8320
Ram: 8GB G.Skill SNIPER DDR3-1866 DIMM CL9 Dual Kit
Graphicscard: Powercolor R9 280x
Power supply: Corsair CX 750M
Win 8.1