Is anyone mining with older r9 cards I have a mix rig with 270,280 and 390's and was wondering how they mined or expected hashrates
7950 Hynix with custom timings 10600 Sol/s 1130/1575
280X Elpida custom timings 9500 Sol/s 1160/1750
280X Elpida timings 1160/1800 10900 Sol/s