I've had good luck with this case: RM-4015 (no brand name)
http://rackmountmart.com/rm4u/rm4015.htm (no commercial plug intended)
It is big, and heavy, and well made. It has a fanwall with 3 X 120MM
fans. You can also add 2 rear panel fans, but you probably won't need
them.
It keeps a dual
I looked to reccomendation of power supply/rackmount chassis for
Supermicro and Tyan dual Opteron motherboards based on nVidia Prof.
2200/2050 chipsets (for example, Supermicro H8DCE-B). The recommended
power for power supply is about 650 W (or higher), what looks as too
high for our