hi im looking to upgrade my Nvidia Geforce 8800GTX 768MB PCIe Graphics card and seeking advice on what to get i have £150-£200 to spend i will be using it for gaming and i will probably use 32" tv at times for watching films etc heres some system specs,what would fit into this motherboard im not computer savvy enough to change that,would i need to change anything like my power etc any advice is appreciated ty in advance
windows 7
Intel Core 2 Q6600 2.4GHz Quad Core
Asus P5Q Motherboard LGA775
6 GBMemory
Nvidia Geforce 8800GTX 768MB PCIe Graphics
Corsair 620watt Modular PSU
Coolermaster Mystique 631 silver Aluminium Case
24" monitor
windows 7
Intel Core 2 Q6600 2.4GHz Quad Core
Asus P5Q Motherboard LGA775
6 GBMemory
Nvidia Geforce 8800GTX 768MB PCIe Graphics
Corsair 620watt Modular PSU
Coolermaster Mystique 631 silver Aluminium Case
24" monitor