If you CF the idle speeds remain at 157/300 (I think), not sure about multi monitors though. From memory the idle speeds will be 400 core and the memory doesn't drop, so 1025 for most, 1050 for the Powercolor users. I needs me a new case. Now its summer my little Antec 300 is getting toasty with 2 Powercolor 5830s and a 965BE in there. Had to take all my overclocking off and I'm still getting mad high temps. (75C GPUs and 55C CPU).