- ATI Radeon HD 2400 PRO 128MB
- ATI Radeon HD3650 256MB
- Radeon ATI HD 2600 XT 256MB
- ATI Radeon HD3870 512MB GDDR4
- nVidia GeForce 9800 GT 512MB
I don't want the last one, too much money. However, which of the other 4 should I get? Is there a big difference? Does it all come from RAM?