I find Dual-X coolers to be pieces of shit. I only use Asus. A friend of mine also does mining with a Sapphire Dual-X HD7850 and has like 5 fans pointed at it @100% fan to be like 75 degrees. And the clocks are horrible, 900 core/1250 mem (LTC). I can run 2 asus DCII HD7850's in one normal case at 50% fan and both are 55 degrees, clocks: 1265 Core, 1502 mem (LTC, otherwise mem clocked down

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