5.6-ish mh/s.  8 7970's.  All with Arctic Accelero coolers.

They all hash between 645 and 735 kh/s depending on the card.

All hash between 48 to 52 degrees C due to the fantastic coolers!  I really believe these things are worth every penny when it comes to scrypt mining since we are overclocking and sometimes even overvolting the memory so far.  My vrm's, core, the whole bit stay super cool.  Every single card I ever add to the rigs will be equipped with one asap.

Plus it makes the resale value a bit better then the rest and a bit more desirable then the rest considering most can acknowledge and appreciate what it means to keep your GPU's running at a much lower temperature.