ARCTIC Liquid Freezer III Pro 360 A-RGB (360mm AIO, VRM fan)

Our analysis

Against the Thermalright Frozen Notte 240, it adds a third 120 mm fan and 120 mm of radiator, 360 against 240, plus a small VRM fan on the pump block that blows over the motherboard's power delivery. It is what we would pair with a Ryzen 9, or with a Core i7 or i9 from the K series: a 360 mm all-in-one with three P12 Pro fans.

What stands out

• VRM fan on the pump. It blows over the motherboard's power delivery, not only the processor, which matters most with an i9 or an overclock.
• Thick radiator. More radiator lets the fans spin slower for the same heat load.
• Room for hungry chips. Our cooler guide notes K-series Intel processors can climb to 180 W in turbo; this is the tier we size for that load.
• Current sockets. AM4, AM5, LGA1700 and LGA1851 are all supported, so it can follow you to a newer Intel platform.

Where it falls short

• Under roughly 150 W, the extra capacity just sits idle. A Ryzen 5, a Core i5 or an X3D chip does not need it.
• Your case must take a 360 mm radiator. Check the mount first.
• Like any liquid cooler it relies on a pump, a part an air tower does not have.

Look elsewhere if

• Your processor draws less than 150 W: the Thermalright Frozen Notte 360 is the 360 mm option without the VRM fan. If you would rather skip the pump, the Peerless Assassin 120 SE is a dual tower with six heat pipes; check its 155 mm height against your case.

We sort coolers by processor wattage in which CPU cooler you need, and explain when a new cooler is truly the fix in safe CPU and GPU temperatures.