I finally got around to modifying a bios for my 560 so I can go over the stock voltage limit of 1.15v
I've got it turned up to 1.175v now, hopefully the 250ish CFM from the 2 Panaflow fans I have blowing on the VRM and memory heat sink will be enough to keep them from going *POOF*.
I tried it at 1000 mhz, but it failed a p8010 WU after a couple of hours, so I bumped the GPU down to 990mhz.
It has completed 4 p8010 WU's at that speed, so this may work out well.
Sadly p8010s don't scale particularly well with overclocks, and don't stress the card as much as the 8018 through 8020 WU's, so I'll have to wait and see if it will will handle those with the current settings.
The good news is that the bigger WU's scale REALLY well with higher overclocks, so if it is able to do them at that speed, it should be a nice bump from 30k ppd on them to the 32k to 32.5k ppd range.