Graphic cards that are PCIex16 2.0 are all backwards compatible with the 1.0 socket. You'll have no problems running the newer cards. What's your $ budget? Your power supply? What resolution (example: 1680x1050) will you be running at ?
The 4870 is a great choice, but if you are a Nvidia fan, then you should go with the GTX 260 Core 216 Super-Mega-Uber-WhateverOtherWordThatMeansBig Overclocked Edition LOL
Alright, but its just called the GTX 260 Core 216. Either one is a good choice, just whichever is your preference.
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.