I'd like to consolidate some information on the temperature you guys are seeing.

I'm getting 49 and 51 Celsius overclocked at 400mhz to 200ghs.
Also I replaced the stock fan for dual fans in the front and back @ 69cfm 2000rpm. It runs quiter now, but the temps are a bit higher than with the stock fan plus one of these fans in the front.
http://www.amazon.com/gp/product/B0026ZPFCK/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1

Also, what is the maximum cut off temperature?