Ok my rig been getting real hot, so i deiced to change cases, I know your thinking bigger fans... nope this is as open as you can get ...
My case is red... the Hard drives are suspended in air by mounted bungee cords to reduce shock and supply air flow I changed out my CPU heat sink as well.
the results was a total reduction of 20 Celsius, I have OC my stock i7 920 to a whopping 4. 0Ghtz running at 45 cel, when gaming I never peaks past 50 cel.
For those that care, i am still running ASUS Rampage ii with 12GB (Soon to be 24G) of DDR3 10600 DIMMS
I did Upgrade my System disk to OCZ SSD drive and it was a turbo charger for the rig!
The pain with the OS is I am lazy and wanted to sshrink the OS drive from a 1.5TB hatachi drive to a 120GB SSD
and well windows made it painless.
All of the cases (12 optional 5 standard) and the CPU fans are 120MM.......