The Reeven NAIA 240 was an overall solid performer that did catch me a bit off guard. I did not expect it to perform as well as it did since it managed to tie or slightly edge out other competing closed-loop coolers. Even the expandable EKWB Phoenix MLC 360 was only slightly better while being a great deal louder and far more expensive. Even the cooler's noise profile is quite good. With it being relatively silent at low loads, it gets a bit loud with the fans at maximum RPM hitting 47 dBA, but even then it is only about 2 dBA above what I consider to be the cut off for unobtrusive performance. Overall, the performance and noise characteristics of the Reeven NAIA 240 are good; it just needs a few tweaks to find that perfect balance.

Memory and graphics card clearance was also good. Granted, the NAIA 240 only cleared the test system's memory by a whisker, but even so it did clear and that is what matters. It should also be noted that the cooler can be rotated to better improve memory clearance if necessary as well. As for the mounting hardware: while it can be improved, it was still easy enough to work with and shouldn't pose much of a challenge for even first-time builders. However, users will want to keep in mind the relatively short two-year warranty. This is especially true as more and more closed-loop coolers now offer 3–5 year warranties.

The white LEDs that illuminate the clear pump housing are a nice touch in that they allow for an RGB effect when paired with the dyes. Sadly, I don't find it to be a useful addition. Dyes can gunk up blocks over time, which results in a number of headaches and eventually worse performance. Sadly, the LEDs can't be disabled either; well, unless you are willing to modify the cooler. While white is of course a neutral color and should fit in just fine with most systems, it isn't for everyone, so it and the dye will be a love-it or hate-it feature. Continuing on the appearance of the Reeven NAIA 240, corrugated tubing is not pretty. In fact, it's downright ugly, and while it does have benefits, smooth rubber tubing or at the very least some kind of sleeving would be nice.

In general, Reeven gets a lot right with the NAIA 240. A few further tweaks could make it a top-tier offering. However, like most closed-loop coolers, it will come down to features and taste more than anything else. Where Reeven stands out is in regards to extras. An included 24-pin test cable to make sure the cooler is functioning as intended is a nice touch not normally seen with closed-loop coolers. Then there is the fact that it can be serviced, thus extending its useful lifespan. A bottle of coolant is even included for that very purpose.

The Reeven NAIA 240 is a no-frills cooler that sports some nice features and extras that make it a viable option if you are looking for a closed-loop liquid cooler.