Depends on which type of processor you are looking for.
Athlon 64 +2800 - ~$110.00
Athlon 64 +3800 - ~$279.00
Athlon 64 X2 +3800 Dual Core - ~$293.00
Note: Dual Core processors are usually best if you tend to run many programs at a time. Having more than one processor sharing loads minimizes the chance of a slowdown in the system. For example, one can be encoding a video while simultaneously doing something else without having to worry much.
Depends on which type of processor you are looking for.
Athlon 64 +2800 - ~$110.00
Athlon 64 +3800 - ~$279.00
Athlon 64 X2 +3800 Dual Core - ~$293.00
Note: Dual Core processors are usually best if you tend to run many programs at a time. Having more than one processor sharing loads minimizes the chance of a slowdown in the system. For example, one can be encoding a video while simultaneously doing something else without having to worry much.
Or just do what I do and have nor than one system and have them dedicated to any given task :P