which of these 2 GPUs would be better

I found 2 GPUs which i might get, they are both the same price but i dont know which is better in terms of performance and reliability (i can build a PC but im no expert), i do use my PC for quite a lot of gaming

so which one is the better one.

Asus GeForce 8600GT 512MB PCI-E(x16) Silent GDDR3 HDTV/Dual DVI EN8600GT Silent/HTDP/512M Graphics Card

Sapphire ATI Radeon 512MB HD4670 , PCI-E 2.0 (x16), 2000 MHz GDDR3, GPU 750 MHz, 320 Cores, 2x DL DVI/HDTV

if you have any suggestions regarding a better GPU then please tell me but im not rich so i cant go to crazy with the money (these 2 cost £55 which is about $100, i could go a bit higher if its worth it)

HD4670 wins, --> 10%

Get this,

http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=30096&source=googleps

http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=30093&source=googleps

Get this,

http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=30096&source=googleps

http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=30093&source=googleps

purpleRz

This. Epic win.