FYI, I have a large Cooler Master case (not sure of model), with 3 Delta 120mm fans (190CFM, 1 intake, 2 exhaust) running a 7990 and a 6970- I am able (in a climate controlled room at ~19C) to keep the 7990s at 75C and 72C, and the 6970 at 65C or so, with fans running 100% (this is with the 7990s at 925/1375, and the 6970 at stock clocks).
2 7990s, however, different story- it just doesn't work. The 7990 sends all its heat up to the exhaust fans, and with two cards the bottom one overheats pronto.
FWIW...
2 7990s, however, different story- it just doesn't work. The 7990 sends all its heat up to the exhaust fans, and with two cards the bottom one overheats pronto.
FWIW...