Which graphic to choose?

[saadusman35]

hello guys, can anybody suggest me which graphic card is better for decent gaming purpose.

HD 4550 64 Bits 512MB DDR2 625MHZ XFX
HD 4650 64 Bits 1024MB DDR2 600MHZ XFX
HD 4670 128 Bits 1024MB DDR2 650MHZ XFX
HD 6450 64 Bits 1024MB DDR3 625MHZ XFX
HD 5450 64 Bits 512MB DDR2 650MHZ XFX
HD 5450 64 Bits 1024MB DDR2 650MHZ XFX

 

[nadim615]

http://www.videocardbenchmark.net/high_end_gpus.html