When I got my hands on my very own Raspberry Pi, I wanted to make it go faster as I do with most things. So I made a little program in C to run a quick benchmark of the speeds and record the tempreatures.
This program is not threaded so it won't really work on multi-core machines, but on a Pi it works perfectly!
You can view an album of my testing here.
Here is the clock speeds I was using:
## Standard Profiles:
## arm_freq core_freq sdram_freq over_voltage
## -------------------------------------------------------------------------
## None 700 250 400 0
## Modest 800 300 400 0
## Medium 900 333 450 2
## High 950 450 450 6
## Turbo 1000 500 500 6
##