Hey man thanks for your reply. My CPU is a Pentium D. The Dual Core Pentiums. Its an old PC I built back in 06.. Works fine I just want to upgrade the vid card. The monitor resolution is: 1280 x 960. If i am not mistaken my power supply is 550W. What I am going to use it for is mainly just to get better graphics on my screen. I use Gentoo Linux on my home PC and in order for me to be able to use the most up to date driver for ATI Radeon, the card has to be an ATI Radeon HD card. Currently I have an ATI Radeon x700 card and Gentoo has only allowed me to use their "vesa" driver which lets me have a graphical user interface, except it doesnt look that great.. hence the desire for a new card. I have 4 Gigs of RAM as well.