ebackhus

Your system uses a Socket A processor, this includes the AMD Athlon, Athlon XP, Duron, and some Semprons. The highest you could probably get away with is a 3200+ (about the power of a Pentium 4 @ 3.2Ghz) but other factors come into play there. The FSB (Front Side Bus, where data travels between system components) is set at 133Mhz currently, which is just right for that particular CPU. If that can be increased then your ability to upgrade gets easier. If it's the highest it can go (which it may be, given the KM266 chipset) then you're stuck with just what you have.

Ok, I looked over the KM266 data sheets, looks like that chipset only support 200 & 266Mhz operation, so the 3200+ is out of the picture unfortunately. At this point you should consider moving up to a new system. I recommend building one, or having one built for you. You can still get hardware that will support your video card, but it'll likely be older or used hardware.

Hope this helps!