Thanks for the quick reply,
I use my system for about everything.. My old system
(Windows 7 Pro 32-bit, MSI K8N DIAMOND nForce4 SLi, AMD Athlon 64 X2 4400+, 2GB (2 x 1024) DDR OCZ Platinum (2-3-2-5-1T), XFX GeForce 8800 GTS, Sound Blaster X-Fi XtremeGamer, Xaser Armor Case, Enermax Noisetaker 485W EG495AX-VE, (+3.3V = 32A, +5V = 32A, +12V1 = 18A, +12V2 = 18A)) served me well for gaming until" Call of Duty Black Opps" came out.
My CPU was the let down and when I bought the new system the game ran great. so now I would like to upgrade my Graphics card and my budget would be £200 - £300.