I currently have an Asus EAH5850 DirectCU on an Asus 890FX Crosshair IV motherboard in an Antec Three Hundred case. Currently, as far as airflow, system temperature, and aesthetic appeal I am very satisfied with this case. I saw it as a minimalist version of the 900/902 and decided to go with it.
In the future i was thinking that my next piece would be another 5850 to crossfire, i'm wondering if it will fit comfortably in my 300. My main concern is the proximity to the psu as it is bottom mounted. The HDD positioning is no big deal because i'm only running one HDD. Thanks for any feedback!
Full system specs:
CPU: AMD Phenom II x4 965 125W
GPU: Asus EAH5850 DirectCU
Mobo: Asus 890FX Crosshair IV
RAM: 4GB Corsair XMS3 DDR3 1600
HDD: WD Caviar Black 1TB 7200rpm
PSU: Antec EA650 650 watts
Case: Antec Three Hundred
Antec 300 will easily handle 2x 5850s.
You'll probably use the top two PCI-e x16 slots leaving plenty of space between the PSU and the 2nd video card.
That last of four PCI-e x16 slots might have been a bit dicey in a quad Crossfire setup as it would crowd in close to the PSU.
The x16 slots are the 1st and 3rd in a dual crossfire setup. I should have mentioned this earlier. So the supposed crowding issue results from using the 3rd pci-e slot, which is the only other x16 slot when in dual gpu crossfire. The first gpu in the first slot crowds the second slot so it isnt usable.
Here's a couple pics: