Hi,
I'm not being negative in my reply to you,
Selecting the right Graphics cards depends on a lot of parameters,
Your Budget
Your intended use, ie, gaming, photo work, video editing,bragging rights, overclocking etc,
Your power supply output,
Your spare power connectors available,
size requirements in Your PC case,some cards can be quite long,have dual slot requirments,
output requirments,ie,. dual monitors, vga, dvi, hdmi, svideo,
If your looking fort a best bang per buck, you could
go for a HD4670 next up the scale is the HD4730 around the £50-£60 mark,
Regards