In recent months, we've taken a look at a fair few AMD graphics board offerings from Sapphire featuring factory overclocks and custom cooling solutions. However, the subject of today's review tops them all, offering up a Radeon HD 4870 X2 with some relatively high clock speeds out of the box and polishing it off with a closed loop water cooling system that can handle your CPU as well as cooling the graphics board itself. Sound tempting? Check out our review to see what we made of it.