Upgrading My Video Card

I Have computer that is an Hp Pavillion 700. I want to upgrade the video card inside of it. It originally came with a Geforce 4 MX 420 video card. I want to upgrade it to a XFX GeForce FX 5500 / 256MB DDR / AGP 8X / VGA / DVI / TV Out / Video Card. I dont know if my AGP slot is 4x or 8x. Someone please help me find out. The system # on my comp is DA192A
The serial # is MX307A1031.

Please help me find out.
Thank You

 

so are you saying i have agp 8x

 

no need to double post all over the boards.

 

would i be better off to buy a pci graphics card then. Would i get better performance out of a pci graphics card? or should i stick with getting that graphics card even though i only have agp 4x

 

any agp > pci.

 

will the graphics card i listed work with an agp 4x motherboard? I want to be damm sure before i buy it.

 

I have to disagree there. Back when I first got AGP, it was an integrated chipset ATI RAGE Pro II. This was back when AGP first game out. I since upgraded to a PCI card that was actually faster than my current AGP, which was 2x or 4x (can't remember).

But, today I'd have to agree with you.