Are you all really sure I won't need additional cooling because I keep hearing this card runs hot also my PSU is only 420w and I hear you require 550w to operate the card is that so or will it be fine?
First off that PSU will have to go. That 400+ power supply will really be under some strain. Add another 2gig of ram and you will be ok. A good high end 500 or 550 PSU would be more than enough power for the 4850. Yeah the 4850 runs farcry2 at ultra high setting for everything. I have everything set at max out settings and no over clocking to date.
The sapphire 4850 with the custom cooler takes care of any heat problems you might have so i recommend getting that one.
AMD 64 7750 X2 2.7GHZ
XFX HD 4770 DDR5
2x2GB DDR2 800
320GB Western Digital SATA 7200rpm drive (1TB External)
24inch ASUS LED display
Antec NeoHE 650W Power Supply
Cooler Master CM690 case Black
Windows 7 Ultimate 64bit edition