I am currently looking out for a good pci-e graphics card and came across this.
Not sure how good it is, but I'm sure the punters/htukd members will advise if good or not...
Graphics Engine - RADEON HD4850
Video Memory - 512MB GDDR3
Engine Clock - 635MHz
Memory Clock - 993MHz x 2
Memory Interface - 256bit
DirectX Support - 10.1
Bus Standard - PCI-E 2.0