I'm wondering if I should sell my stock, unmodded Fury X (30.8 MH/sec ETH, 465 MH/sec Pascal) and try to snap up two 580s. Or should I wait for Vega and then upgrade? I'd love to run Vega when it comes out, I'm just wondering if two 580s would be more efficient to run while I wait for Vega or if I should keep running one Fury X.

If I keep the Fury X, what should I try to overclock? I know with a Nano at 940 MHz mining just ETH, it was around 26 MH/sec. I think I need to overclock the core if anything cause I have free electricity, but would memory speeds eventually become a bottleneck?