Over the last few years, we've seen an increasing number of liquid coolers positioned as high-end alternatives to traditional heatsink+fan combinations. This has been particularly true in the boutique market, where a number of manufacturers now offer liquid coolers in one form or another.
The kits we're looking at today are a far cry from the water coolers enthusiasts have been building for years. DIY water coolers typically involve separate reservoirs and external pumps. The systems we've tested contain significantly less fluid and use small pumps directly integrated into the cooling block.
Integrated all-in-one kits may not offer the theoretical performance of a high-end home-built system, but they're vastly easier to install and require virtually no maintenance. The tradeoffs are more than fair, provided that the coolers perform as advertised.