10-20-2013, 08:37 PM
The numbers in your benchmark are actually a bit low. At 925 Mhz, single hash NTLM performance should be about 15700 MH/s per GPU, or 125.6 GH/s total. But actually stock clock for your 7990 should be 1000 Mhz. At 1000 Mhz, you should be getting about 17000 MH/s per GPU. Our 4x 7990 boxes pull about 136 GH/s total.