Funny you say that given I'm dusting off an old laptop that has a 1.xGhz Core Duo CPU and 2GB of RAM. It's the next one to be used for performance and stress testing. The reason? Anything that can't run snappy on that box is just bloated or wasting resources. Lean, native code tends to do the job nicely. :)

Note: Also good to do it on cheap, throwaways because this sort of thing burns out the CPU's. Better that box than my main one.