My laptop ...
pd-extended 0.39.3
Intel(R) Pentium(R) 4 Mobile CPU 1.60GHz
uname -a Linux danomatika 2.6.20-16-lowlatency #2 SMP PREEMPT Sun Sep 23 19:54:02 UTC 2007 i686 GNU/Linux
REALTIME: 19.486 REALTIME: 15.002 REALTIME: 15.163 REALTIME: 19.944 REALTIME: 20.354
And for what its worth, my wearable music computer ...
pd-extended 0.39.3
P3 Celeron (Coppermine) 500 Mhz (looks better then 0.5 GHz :P)
Linux unit 2.6.20-15-lowlatency #2 SMP PREEMPT Sun Apr 15 07:39:03 UTC 2007 i686 GNU/Linux
REALTIME: 30.987 REALTIME: 29.313 REALTIME: 30.798 REALTIME: 31.094 REALTIME: 30.659