I'm half surprised that the PC liquid cooling trend never died. In fact it seems to have expanded beyond its initial momentum in the early part of the decade. Today's liquid cooling technology is much better engineered than before, and requires substantially less work to assemble and implement. One thing liquid cooling has never been -- and may never properly be -- is safe under all circumstances. I really like the Thermaltake BigWater 760i liquid cooling system, and I took every precaution in assembling and testing it. Still, more than a month after it was installed, the unit leaked, destroying my motherboard and power supply, and damaging the internal finish of my chassis.
Thermaltake BigWater 760i review