Done!
No leaks, no damage, all cool! Updated drivers and app. profiles.
Temps idle cpu/gpu 29/30, under load 31/49
Ambient temp is some 20 degree.
For better temps, the fans for radiator should be replaced from current 800 RPM to 1200 (or higher) RPM, but the advantage is the silence.
Scaling running Heaven DX11 Benchmark 2.5:
Single 5870:
Single 5970 (= 2 x 5870):
Tri-Fire (= 1 x 5970 + 1 x 5870 = 3 x 5870):
Next tasks will be cleaning tower/box
and then some light overclocking.
Graphics cards are running the "slow" 5970 mode (725/1000MHz) and will be upped to 5870 mode, 850/1200MHz.
CPU i7-930 will be overclocked from current 2,8GHz to ~3,6GHz.