NeweggBusiness - Fractal Design Celsius S24 Blackout 240mm Silent High Performance Slim Expandable All-In-One CPU Liquid / Water Cooler, LGA 1700 Compatible
The Fractal Design Celsius S24 is actually pretty cool - you can unscrew the fittings and daisy-chain units. I wish more AIO's would let you do this, what do you think? :
Celsius S24 — Fractal Design
Fractal Design Celsius S24 Liquid CPU Cooler Review - ThinkComputers.org