I'm looking for a tool which can execute a number of different CPU speed tests. I just want to compare how much faster my computer's CPU is from another.
I also want to test "just one core" because I want to know how much faster I can execute a task which can not be paralleled.
I also want the tool to be able to test a "2 physical processors" configuration.
An example of a test could be, "calculate 100 000 numbers of pi," etc.
I would expect the tool is free, doesn't require an install, and works on both Windows 7 and Windows Server 2008 R2.
I'm looking for something simple. It could be even command-line. I may even write a program myself which calculates "pi". I don't need a "fancy" interface, xml reports, auto-update, built-in comparision to other processors or anything else. Just a tool which produce results.