I have an Celery 800 running @1104Mhz. I am using a custom-made round brass water block, using a 3/4 fridge and freezer to cool the liquid. I also have a peltier and a .125" copper coldplate between the core and the block. Initial start-up temp was 4C and running at 100% (using seti@home) for 3 hours it is averaging 10C. I am using a seperate power supply for the peltier and I know that I am only getting 8.3V off the 12V line. Would increasing this, increase my chances of getting into the subs, and possibly getting my 50% OC? :/