Fractal Design Celsius S24 and S36 are CLCs with a twist
 

Hardcore custom-loop liquid-cooling enthusiasts tend to turn their noses up at closed-loop (or "all-in-one") coolers, but even they might want to have a look at Fractal Design's new Celsius lineup. The Celsius S24 and Celsius S36 use 240-mm (S24) or 360-mm (S36) radiators with integrated fan hubs and have standard G 1/4"-threaded fittings so that you can easily expand the loop to include a second waterblock.

http://techreport.com/news/31880/fra...s-with-a-twist