I purchased a gpx card a while ago but had very little luck with it.... "PowerColor Go! Green HD5450 512MB DDR3 HDMI"... the specs listed are...
- Part NumberAX5450 512MK3-SH
- Graphics EngineRADEON HD5450
- Video Memory512MB DDR3
- Engine Clock650MHz
- Memory Clock400MHz x 2
- Memory Interface64bit
- DirectX® Support11
- Bus StandardPCIE 2.1 [Compatibility]
- Display ConnectorsDL-DVI/HDMI/VGA
The computer I'm working with is a Dell OptiPlex 745... http://www.dell.com/support/troubleshooting/us/en/19/servicetag/CHZGVC1?s=BIZ
That's the Dell page for my particular service tag...
Any help would be much appreciated.