Anything I can do with my two 7990s with hynix mems? One card is XFX reference model and the other is AMD/ATI, alsy Hynix mems. I get around 280 sol/s per core (560 per card), downvolted to 1000 mVolt (stock is 1200) lowered temps by 15-20 c. Core runs at 900 Mhz, mem @ 1500.