Originally Posted by brettjv
If it was me, especially given that DDR>$ than DDR2, I'd scrap the 939 and look for a cheap mobo (like an ecs p33) and c2d combo deal. Look for a known good overclocking processor like the e2180, two sticks of decent ddr2-6400, and the cheapest 9600GT you can find. Should be able to pull that off for under $300 no problem. Then you'll be basically up-to-date or close to it, and that setup, overclocked, would handily beat an opty 170 with 8800GT in most situations, and lag behind it only very rarely.
Good idea. I guess it depends on how much they have to spend, and how much they'll have to spend in the future. To be honest, for gaming, I didn't see a huge change in games when I went from my previous S939 4400+ X2 to my current e2180. Other things I saw a huge difference in--benchmarks and video converting (not surprising given a couple factors--faster CPU, and possibly my gpu is the limiting factor in gaming performance). But still, it more or less kept up with current games. So if he can get a CPU and RAM (2GB) for less than a new intel setup, then it's understandable to do so. Of course, if it is more or less equal in price, then I'd say of course, upgrade.
@OP--how much do you have/would you be willing to spend?