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It could run any graphic card, since you have 1 x PCI-E (x16) slot, but you might want to upgrade the PSU to work with the card. But since the CPU is AMD i would recommend an ATI card.
ok thanks
Also, you might want to do some research on the card before buying, because some cards require a better PCI-E slot.
Okay i will do that.
My take:
The motherboard:
Motherboard Specifications, N-Alvorix-RS880-uATX (Alvorix) HP Pavilion p6623w Desktop PC - HP Customer Care (United States - English)
is spec'd as having a PCI-E X16 graphics slot, "Gen 2 speed". That should be compatible with any PCI-E X16 graphics cards, including the new PCI-E 3 cards.
The PC is listed as having a 250W power supply, so that'd need an upgrade for anything but very low-end graphics cards.
I disagree about getting an ATI/AMD card to match the AMD CPU. Get the make that you'd like. As far as I know, there are no compatibility issues. Some of the newest AMD motherboards have been licensed by nVidia to support SLI.
Can eva geforce or sapphire radeon work on it? Well i dont have the computer planning on to buy it and graphic card along with it.
Yes, but most upgraded graphics cards would need a larger power supply.
eVGA (www.evga.com) and Sapphire (www.sapphiretech.com) list system requirements for their cards.