Video card = ATI 9550 128mg Do a search on ebay
and if you plan on upgrading your video card; then you definetly dont want the stock PSU for that computer! it wont power the system with the better video card added
replacing the PSU is super easy >>>> unplug the PSU from the wall >>> remove the four screws that mount the PSU >>> disengage the snap clips that hold the motherboard & cpu connector >>> thats it
this process is as easy as changing ram almost
the new unit will also come with very good details
you have no need to worry about a 24pin motherboard connector >>>> yours is a 20 pin for sure >>>> most all newer socket 939 and similar very new releases are 24 pin motherboard connectors
dont hesitate to ask more questions and enjoy
http://cgi.ebay.com/New-ATI-RADEON-9...QQcmdZViewItem