I can't seem to find a naked HD 5830, but from the reference photos of the 5850 and 5870 they look to have the same layout (besides a few caps and other stuff) I'll settle with the stock cooler until I can get a good photo comparison of the 5830 and 5850, 70 or someone with success with a block on the 5830.

I am interested in the aquagratiX for HD 5870 and HD 5850 (RV870) G1/4 but I have a 5830. Will the block work on a 5830? If it does, could I get some suggestions for a liquid cooling setup? Pump, radiator... : ) My case is a Cooler Master ATCS 840 (I will be doing a crossfire setup in the future)