What about my AGP card? I don't seem to see any agp slots on these mobos like the neo4 plat from msi.
No, but of you want to go 939 and keep the card you could go with an Nforce3 Ultra
or K8T800 Pro
chipset board instead.
And what is sli?S
nterface. It allows you to run two graphics cards in tandem.
I have an XP AMD system right now.
Assuming that you may have PC2100 or PC2700 RAM. If you get a 939 board you'll want to upgrade to PC3200 at least to get max performance. You may also need a beefier PSU.
I wanna get an amd 64/FX 939 barebones and move most of my components over to that. 3500, 3800 or 4000 do you think? Budget is pretty flexible.
Get the best one you can afford.
If i can keep it under 1000 around 900 would be great.
If you go with an AGP 939 setup you may be able to keep most of your components and upgrade one at a time as your budget permits. If you want to go PCI-E you may just want to chuck everything and start over. It is
possible to build a brand new system for around $1000 depending on which parts you pick (3500+, 6600GT, etc). Good luck!