There's your problem.
You want a 3.0+ghz processor triple - six core, for multiple applications. (Quad is great) (Dual may or may not get the job done)
If you choose to buy a new processor AMD Phenom or Intel i3-i7(if you want to spend more) will be good for you.
You also want 8-10 GB of RAM, and possibly a new graphics card?
Graphics card - Brand: Nvidia atleast 1 GB
You should also consider setting up a VPS, which would be cheaper than buying these parts.
A VPS is virtual so you will be alloted the specs you choose to pay for virtually and be able to run your bots off that.