HP Compaq 8000 Elite Small Form Factor Installing Graphics Card

[NICETOBNICE]

Hi guys I have a HP Compaq 8000 Elite Small Form Factor pc but would like to install a graphics card can someone advise of one that i can purchase
preferably from amazon

Thanks guys

[Reapers]

i had a quick look at your pc cant really tell your specs because it gives different variations of builds
could not tell cpu psu or ram or pci express slot type which can be important for graphics cards

i don't know what you want it for purpose media center gaming etc

here is examples
1gb version
6670 Asus
1gb version
7770 Asus
2gb version
7770 Asus