Well, here's one to chuckle over

Asus M2V AMD 3800 X 2

Sonar 3

Soundcard: er, the builtin 'crap' realtek sound device on the motherboard, driven through ASIO4ALL 2.7

Only took one data point: at 5.8ms latency, CPU was 30%.

Not bad I thought for the crappiest possible output device you could pick.

Interestingly, on my laptop (Pentium M 1.5 IBM T40) with UA25, I cannot get this test to run even at max latency setting (48mS reported). What actually happens is that every time I try loading the test, Sonar crashes catastrophically with an addressing exception. This is worrying - but checking, it looks like there's a new driver for the UA25 - will grab that and retry in a moment.

In some cases, the speedup came out to more
than 5%, presumably because the measurement isn't really exact.