Some additional information for you on the GT240s.
GT240 (DDR3 and DDR5 models) Galaxy and PNY, respectively.
Win XP Pro SP3
Memory: ~100mhz underclock
Shaders: ~1800mhz on all 4 cards (a few were turned down some)
450 - P3469 - 7069.09ppd
445 - P3470 - 6990.55ppd
353 - P5771 - 5083.20ppd
783 - P5783 - 4764.17ppd
375 - P5799 - 6750.00ppd
472 - P5910 - 4037.70ppd
1888 - P5912 - 3968.93ppd
Average PPD: ~5250 PPD overall
If anyone cares, you can watch this rig folding @ http://www.fah2web.com/users/stacker1/
to see it on current work units, etc
I couldn't find any reliable info on GT240 / GT 240 folding so hopefully this helps out anyone google-ing like I had been previously. If you can pick these cards up cheap (read: ~$65) they are a steal! Cool running, low power (don't require extra power connections from your PSU, I have 4 of them running on some garbage $35 CoolMax psu from Frys).
This is the first feedback from my first folding rig, I can't wait to get my other ones setup within the next week or so