Cactusjack have you got the 680 SC Signature or 680 SC Signature 2 with the 2 fans?
I cannot find any reviews of the SC Signature 2 but it appears to run a bit faster, a bit quieter and a lot cooler than the SC Signature and is £29.26 cheaper. Thats £60 (going for SLI set up) towards a bigger SSD and a quieter rig.
What do you reckon?