Updated for the fourth time, I think this is quite a good comp...
That CyberpowerPC system is overpriced and it's not even that great really. I'll help you out here try one of these three customizable systems and note the changes....
1. http://www.chillblast.com/pconf.php?productid=19639
- Change graphics card to Radeon 5670
- Change power supply to at least the OCZ Stealth Extreme 500W PSU. This is IMPORTANT...do not skimp on this
- Everything else is up to you. Should be under £600
2. http://www.chillblast.com/pconf.php?productid=19737
- Change Processor to Core i5 2500K
- Change power supply to at least the Xigmatek 500W PSU. This is IMPORTANT...do not skimp on this
- Graphics card to at least the Radeon 5670....5770 preferable.
- Monitor to 21.5" BenQ
3. Chttp://www.chillblast.com/pconf.php?productid=19729
- Change Processor to Core i5 760
- Graphics card to at least Radeon 5670
- Change power supply to at least the Xigmatek 500W PSU. This is IMPORTANT...do not skimp on this
- Monitor to 21.5" BenQ
Which system is better will depend on what you can afford and how you customize the systems. They're all pretty decent though and should get you high settings. I'll leave this ranking for Processors and Graphics Cards so that you can make a balanced choice:
Phenom II X4 955 < Core i5 760 < Core i5 2500K
Radeon 5670 < Radeon 5770 < GeForce GTX 460 ~ Radeon 6850