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You’ll need to make sure there’s room to install an AIO cooler in your PC case, preferably in the top or rear, exhausting your CPU heat out of the chassis. AIO coolers typically come in three sizes, defined by the dimensions of the radiator and the fans the radiator is designed to fit: 120 (one 120mm fan), 240 (two 120mm fans), or 360mm (three 120mm fans).
In regards to build quality, I have no real complaints other than the fact this unit isn't really pure white, it is more of a cream color while the sleeving on the tubing is a bright white. Beyond the slight color disparity, everything else is solid. The installation hardware is easy to work with and feels quite robust, the pressure regulation via the company's Anti-Leak tech is always a nice touch, and a long warranty adds peace of mind. Furthermore, DeepCool also includes low-speed fan adapters that limit the fans to 1600 RPM for those that want to focus on silence rather than maximum cooling. This is a nice inclusion since the cooler does get loud at max RPM, where it peaked at 56 dBA. With the low-speed adapters installed, at 15 cm (6 inches) the cooler will max out around 45-48 dBA, which in a regular chassis a foot or more away from you would result in the cooler being much quieter in day-to-day use. Corsair’s iCUE H170i Elite LCD XT AIO offers the best cooling performance we’ve tested yet with Intel’s i9-13900K, handling over 325W in our most intensive thermal tests. And unlike other coolers, the noise level of the H170i Elite is tied to the CPU coolant temp, resulting in quieter operation during most common tasks and the elimination of bursty fan behavior. The tradeoff is that we saw noisier operation under the kinds of sustained loads that we use for testing. The DeepCool LT720 high-performance liquid CPU cooler provides strong heat dissipation power with a 360mm radiator, three precision-tuned FK120 fans, and a multidimensional infinity mirror top cap.DeepCool also includes two plastic tubing clips that freely slide up and down the tubes. The clips are there to help keep the tubing in line and are decorated with DeepCool moulded logos. While it was fairly easy with previous generations of CPUs for coolers to keep the flagship i9 processor well under TJ max (the maximum temperature a CPU can sustain without throttling) in tough workloads, this is no longer realistically possible on current generation CPUs (and the 13900K especially) without extreme cooling (or enabling power limits). After installing and testing it, I found Cooler Master’s new MasterLiquid 240 Atmos especially impressive. It’s clear the company has improved its flagship AIO in several key areas. Noise levels are low in most common workloads, and despite its smaller 240mm profile, the 240 Atmos is one of only a handful of AIOs I’ve tested that's capable of keeping Intel’s i7-13700K under its peak temperature, even in the hottest of workloads.
Anti-Leak Tech means that inside the radiator is an elastic pressure-relief bag with one side exposed to the air and the other side submerged in the coolant. When the internal pressure exceeds atmospheric pressure, the bag contracts to increase the system’s internal volume and reduce the risk of a leak.
That’s still no small amount of money for a cooler. But if your needs are extreme enough to warrant a 420 mm radiator, you can probably afford to spend a bit extra on keeping your powerful CPU as cool as it can be under load. While cooling performance is absolutely amazing, thermals are only one part of the picture. How loudly the cooler runs is very important as well. In its default configuration, Lian Li’s GA II Trinity Performance runs loudly at 55.2 dBA. I’ve only tested a handful of coolers that reach this level of noise.
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