According to mininghwcomparison.com I should be mining at around 44MHs with my HD7990 card (bought used very recently), however I'm only getting between 10-15 (Genoils Ethminer). Is this expected? Is the data out of date on the above site?
I did notice on one other miner (Claymore) I tried that my card was reporting back as two 280x GPUs. Is this normal behaviour for this card, or has someone potentially been mod-ing it?