I?m a big fan of NZXT coolers, I personally use their Kraken X60 280mm all-in-one water cooler on my own CPU and I?m very happy with the performance it offers. So I?m eager to find out how well these new models perform and what new features NZXT have to offer.

The biggest change for the new Kraken coolers is the pump; they?re the first consumer model all-in-one coolers to features Aseteks new variable speed pump, something often associated with custom loop water cooling and yet another indication of how far all-in-one cooler technology has been progressing.

I?ve got three new models at my disposal today; the 120mm X31, the 140mm X41 and the 280mm X61 and I'll be putting them all on the test bench to see how they stack up against each other and against the competition.