the available wu's are 107 (last time I looked at) 3 out of my 10 smp client is crunching a1 units with less than half the speed.
They can use a little cool off time anyways
Do they run cooler with a1 Work units ?
It figures ... they are running low on a2 WU and I just set up a new Athlon X4 620 rig running stock speed so far.