With just the SMP running, the machine draws 175w from the wall, with approx 10000ppd.
The 560 pulls 210w for 14000ppd. The CPU is approx 57ppd/perwatt and the GPU is approx 66ppd/pw.
Both together use 240w, and do 22000ppd, which is 99ppdpw
All the GPU WUs are roughly the same, ppd wise, but the SMP ones vary from the nice 500.000 WUs, to the 2M WU, and even the scary 4M WUs, which can drastically reduce PPD.
I run both, as I seem to be addicted to the points system, and even if I stop the GPU, the machine draws 240w, so may as well do something useful with it.
EDIT: Currently running a 2M WU at 6000ppd, and GPU at 13000ppd. this puts the ppdpw at
i5 750 =34.28
560 = 61.9
Total = 77.
I will confirm the numbers for GPU only power draw when this smp unit is complete. I have a habit of corrupting them if I stop them midflow. ETA is 1am