Hi Adam,
Sounds like we are in the boat!
The M2050s I just purchased are HP parts and I am running one (too nervous to try both at present!) currently in a custom built machine comprising an Asus Rampage IV extreme motherboard with a water-cooled intel 3960X and 64Gb of RAM. I have a 3Gb GTX580 driving the display.
The M2050s is getting hot but my CUDA kernals are intense short burst activities at present - this is for code development (we willl deploy over a large cluster via EC2 when the code is ready). I have just ordered one of these:
and one of these:
I will use the former adjacent to the M2050 heatsink and hope that it cools it a little, the latter will be used to help exhaust a little more air out of my Corsair D800 case (which is pretty well cooled already).
If this works sufficiently well I will deploy the second card in my server box (custom made on an asus W6 Supercomputer motherboard, intel 980X) alongside an existing C2050 and a GTX470 driving the display.
My office is getting rather toasty though,nice in winter but…
This solved my MPI under windows problem but gave me a few more headaches.
Darrel