I suggest you get PCI EXPRESS board cause it's going to save you a lot of money and give you a lot more options in the future. If your only reason to stick with AGP is your old 8500 video card that you're not thinking clearly. I 'd understand if you had a 6800Ultra AGP card that you want to keep, but in the case 8500 you can just replace that one as well. If you're not ready to spend heavy on a video card, just get a 6200 for $60 which will give you performance equivalent to 9600pro - much better then your 8500. As for mobo - you should only get nForce4 based mobo as this chipset is DA BOMB (just like nForce2 was the ultimate athlon XP chipset). Athlon64 CPUs, especially the newer socket 939 overclock like crazy, and coupled with a good chipset (==NF4) it gives AMAZING results and is VERY SIMPLE TO DO. You can count on at least 25% overclock, and sometimes even 40-50%, so it's a big waste not to do it. As for stability, I believe that good overclocking will provide very good stability if you verify the final settings with rigorous stability tests. So you need to choose a NF4 mobo - the MSI K8N Neo4-F is a good choice (budget version of Neo4), or if you can spend more you can get the DFI Ultra-D. And btw, you DO NOT NEED expensive memory to be able to overclock - any old PC3200 will do -the advantage of expensive memory is negligible. Other good investments to get better performance - get the audigy2 zs - it will give immediate 10-15% higher gaming performance. So in summary, Athlon64, socket 939, pci-express, nforce4 will give the best performance, durability, compatibility and upgradability now and down the road. Anything else is just going to come up short.