9600gt to

hi guys im posting for my friend
his system
amd 6000+x2
650w psu
4 gig ddr2 -800 ram
9600gt
and a am2 mobo


what graphics card you guys think would be better of getting he current has a 9600gt and whats a better card what card you think would be better for his setup?
heres the options

Palit ATI Radeon HD4850 512mb 625core 1.986mem 256bit GDDR3 DVI HDTV HDCP PCI-E $ 249
Gigabyte ATI Radeon HD4850 Zalman 512mb 625core 1.986mem 256bit GDDR3 DVI HDTV HDCP PCI-E - Zalman Cooler $ 285
HIS ATI Radeon HD4850 IceQ4 Turbo 512mb O/C 650core 2.0mem 256bit GDDR3 DVI HDTV HDCP PCI-E $ 285
HIS ATI Radeon HD4870 512mb 750core 3.60mem 256bit GDDR5 DVI HDTV HDCP PCI-E $ 320
Palit ATI Radeon HD4870 1024mb SONIC O/C 775core 3.80mem 256bit GDDR5 DVI HDTV HDCP PCI-E $ 359

Galaxy GeForce 9800GT 512mb 256bit GDDR3 600core 1.8mem 2xDVI HDTV HDCP PCI-E $ 179
Palit GeForce GTS250 512mb 256bit GDDR3 745core 2.2mem 2xDVI VGA HDMI HDCP PCI-E $ 249
Galaxy GeForce GTX260+ 216SP Overclock 896mb 448bit GDDR3 625core 2.0mem 2xDVI HDMI HDCP PCI-E $ 345
Palit GeForce GTX275 896MB 448bit GDDR3 633core 2.268mem 2xDVI HDCP PCI-E $ 449
Palit GeForce GTX285 1GB 512bit GDDR3 648core 2.48mem 2xDVI HDCP PCI-E - Order only $ 579
Inno3D GeForce GTX285 1GB 512bit GDDR3 648core 2.48mem 2xDVI HDCP PCI-E - Order only $ 609
Inno3D GeForce GTX285 Overclock 1GB 512bit GDDR3 700core 2.56mem 2xDVI HDCP PCI-E - Order only $ 649


i know some card may bottle neck'd by the cpu and some may not be able to run on his psu but your opinions are welcome