You could change some things around here and there, but all the parts are many generations old so the whole computer kinda serves as one big bottleneck.
It would be better to just get a whole new computer from DELL or something.
$650ish will get you a full set of parts that are the bread and butter of today's computing world.
It really depends on how much you have and what you want to use the computer for.
You can get a full computer deal with an AMD Llano processor for like $250. It won't have awesome graphics, but you can't expect that for $250 either. Awesome graphics cards cost more than that just for the graphics card, much less the whole system.
In any event, I can guide you for how to squeeze a little bit more out of this computer, but I would honestly advise against buying older parts and trying to keep this computer going a lot longer.
Wow that's one old dinosaur. I would just completely start from scratch and get a cheap Llano build (like Raiddinn said). What are you doing with your computer? Do you want to upgrade for gaming, web, or just faster computing?
Well I have been doing a lot of Photoshop, Illustrator, and blender but have kinda hit my max with the 3d. Im just looking at extending this computer for a bit; I will be buying something new in probably 6-12 months so a cheap patchwork fix is all im needing. Thanks.
It is hard to tell which is the best processor your board can support, but the best strictly AM2 processor is probably the Athalon 2 6400+ which is probably going to be sold out everywhere, but even if you could get it then it wouldn't be a huge upgrade over the one you have.
If you got one, you could expect to go about 25% faster on photoshop for all of the expense.
4850e in Photoshop Retouch Artists = ~56 sec
6400+ in Photoshop Retouch Artists = ~43 sec
2500k in Photoshop Retouch Artists = 12.6 sec
On Amazon, you can get the 6400+ used for $99 or new for $250.
On Newegg, you can get the 250k new for $220 with free shipping.
You are really just throwing good money after bad if you try to keep this thing going longer.
Better to just not upgrade now and do the whole upgrade 2 months sooner in the future.
I realize that a 520 is not the best bang for the buck card around but his case is a slim case, and there are no lo-pro 6770's atm, and the the 520 doesnt require a 6pin power cable, and many apps can benefit from the cuda tech. This way you can upgrade for just the cost of a video card, go the 6770 route and you'll be buying other parts as well, granted you'll get more performance but my way is cheap and plug and play.