XFX GeForce GTX 275 XXX Edition 896MB GDDR3 Dual DVI (PCI-Express) - Retail
XFX ATI Radeon HD 4890 1GB GDDR5 PCI-Express Graphics Card
Gainward GeForce GTX 260 Golden Sample "Core 216 55nm" 896MB GDDR3
Asus ATI Radeon HD 4870 X2 2048MB GDDR5 TV-Out/Dual DVI/HDMI (PCI-Express) - Retail
Asus ATI Radeon HD 4870 Dark Knight 1024MB GDDR5 TV-Out/Dual DVI/HDMI
which card to pick thanks
XFX ATI Radeon HD 4890 1GB GDDR5 PCI-Express Graphics Card
Gainward GeForce GTX 260 Golden Sample "Core 216 55nm" 896MB GDDR3
Asus ATI Radeon HD 4870 X2 2048MB GDDR5 TV-Out/Dual DVI/HDMI (PCI-Express) - Retail
Asus ATI Radeon HD 4870 Dark Knight 1024MB GDDR5 TV-Out/Dual DVI/HDMI
which card to pick thanks