I am looking to purchase a new graphics card, to replace a 4850 that is going to be used in a cheaper system. At the moment my system is completely stable, with an intel c2q q6600 at 3.6 ghz (1.42 vcore), 1 hard drive, 120 mm fans and, of course, the 4850. I am powering the system with a CMPSU-520HX, the 520 variant of the Corsair modular range.
I have two criteria to be met:
1. What is the fastest card I can purchase for no more than £150?
2. Will my power supply be able to cope with the highly overclocked processor/ new, higher powered grahics card?