Anyone with Multi Processor Servers

I have a application (vb.net) with 4 threads that do heavy heavy stuff. I notice with 2 threads doing lots of stuff spins up about 50% cpu usage and 3 it goes to 100%. With all 4 running it is at 100% usage but all threads still work, just less efficiently. I am thinking of buying a dual processor server but I am wondering if that is enough or should I go quad? Anyone have any experience with multi processor servers? I am trying to avoid buying a quad processor server if I don’t need to.

Thanks

Lime,

Before purchasing a new server or new processors. I would look at the code. A server such as the one you have should be able to handle four thread no problem. The threads may be unneededly hogging proccessor usage and could be tweaked to get the same thing done with less processor usage time.