Got a PCI-E extender because my GPUs were way too close and the top one was getting too hot. One of my BFL singles isn't running atm due to a bad power brick. Buying some cables from Cablez: https://bitcointalk.org/index.php?topic=74397.0 The Delta AFB1212 fan in my window moves some serious air and really keeps my room at a perfect temperate. It can get loud at 100% so I use SpeedFan to keep it around 75% speed.