Asus or Sapphire HD4850 512 Mb

[colorfulfly]

Which HD4850 512 mb should I get? I heard that the Sapphire has better cooling.
People!! Please tell me which one I should get!! And also, how much FPS gain would I get for games like TF2, COD4, Crysis, Fear2 and COD5 if I got two HD4850’s and Crossfire them??
And most importantly, is my PSU enough for crossfire and everything I have?
And also, does my motherboard support one HD 4850? Does it support 2 HD4850’s Crossfired??
Thanks a lot!!!
Btw, is my Antec Nine Hundred good enough to OC my CPU to 3.0 ghz without after-market HSF??

Cooler Master Extreme 650W 20+4 SLI & CROSSFIRE
Asus P5Q-E Motherboard
INTEL CORE 2 QUAD Q6600 - Oem
Xigmatek HDT-SD964
Asus Radeon HD4850 512MB
OCZ DDR2 4GB D/C Kit PN - OCZ2P10004GK PC2-8000 4GB Platinum Edition Dual Channel
Western Digital 500GB 7200 RPM 16MB Sata
Samsung SH-S223Q/BEBN 22x DVD±RW SATA Dual Layer Lightscribe ReWriter
Microsoft Windows Vista Home Premium
Antec NINE HUNDRED ATX Full Tower

 

[bobbknight]

First the Antec case is great for air cooling.
The PSU, is it up to the task of powering your desired card, chec with one of the PSU calculators.
I don't buy Asus anymore because of the **** tech support.
For ATI cards I only buy Visiontek retail cards for the lifetime warranty.

 

[Shadow703793]

DO NOT GET THAT PSU. Get a Corsair 550VX or even better a PC Power & Cooling 610.

 

[FrozenGpu]

DO NOT GET THAT PSU. Get a Corsair 550VX or even better a PC Power & Cooling 610.

^+1