Arctic Liquid Freezer III Pro 420 A-RGB - AIO CPU Cooler, 3 x 140 mm Water Cooling, 38 mm Radiator

This is the best AIO I have owned. I am running an AMD Ryzen 7 5800X3D which are notoriously hot running cpu's. I was running in the high 80's sometimes pushing into the 90's duty after installing this beast I am clocking low 60's to mid 70's. It cools great! I installed it into a MSI MAG PANO 120R PZ Case. With a few modifications I did get it to fit. This thing is huge! It looks marvelous in my case and compliments my RGB scheme perfectly. The build quality is top tier. The added fan on the CPU block is a nice added feature to cool the surrounding area of the motherboard. The instructions are straight forward and easy to understand. It functions as advertised. PLEASE NOTE! Make insure your case can accept this size of radiator or you will be returning it. Well worth the money!!!

Alan P. · 2025-12-27 · via amazon

First and foremost I'd say definitely measure your case, motherboard, and ram clearance before buying, this aio is pretty huge. For reference, the relevant parts in this build were a 9950x3D AMD CPU, G.Skill Trident Z5 64GB DDR5 RAM, ASUS ROG Strix x870E-E Gaming Motherboard, and the case is a HAVN HS 420. Installation was extremely straightforward, no issues with connectivity or functionality, the aio comes with separate headers or a combined one for your motherboard for lighting/fan/pump control. Temperatures are beyond incredible, I live in a warmer environment and cpu temps sit at 35c on idle, while reaching 70c max utilizing 32 threads on burst python parallelization functions, all of this while being completely whisper quiet. I do wanna note that there is no direct rgb software from arctic to my knowledge unless you buy their controller separately, but the rgb can be controlled through a number of other software, including in my case, the aura creator in armoury crate for ASUS. Also rather comical, but I thought it was worth mentioning for any others that didn't notice, the cpu block itself only has the appearance of a fan, but does not actually spin, not that it's needed haha. Overall it's a fantastic cooler and I'm very happy with my purchase!

Taiki · 2025-11-11 · via amazon

This works amazing with my 9800x3d! It keeps the temps at 45c idle, 58c at about 50-60w, and at full 140w draw with 5.4ghz it tops out at 80c! It looks great and the RGB is beautiful, the pump is kind of noisy, but very performant at 50%

Austin · 2026-03-25 · via amazon

It turned out to be the best AIO Cooler I have used in a while. It has big 3 140mm fans that push all the heat out without being noisy! Yes bigger fans less noise as they push more air out running at LOW RPM. My Ryzen 9900x runs at 30-33C on idle and about 60-65C in load conditions, pretty good numbers at the price is unreal, i was going with NZXT and all those big brand selling their products at so high price but I bought recently NZXT H9 Flow RGB+ 2025 model and wanted to try this budget friendly liquid cooler. I realize I am first to order this on amazon and it was great same day delivery. I moved from NZXT X63 and Noctua D15 on another PC. I am definitely buying Arctic products more to try as this brand has surprised me with this cooler. With other brands good luck finding 3 fans and radiator of this humungous size. It doesn’t only cool well, it comes with RGB and amazing VRM fan that attaches so easily to heatsink area on top of your processor. And that offset for AMD is mind blowing, no need for an offset bracket, this is designed best for at least AMD as core units are lower on these AM5 processors. Great job Arctic for making this affordable! Amazon great job at same day delivery as I wanted to do this on weekend. Overall highly satisfied with its performance.

Muhammad Khurram · 2025-07-13 · via amazon

Overall, this has been a great experience so far. The performance is solid, and it works well with my setup. That said, there are a few things to be aware of before buying. Installation isn’t exactly beginner-friendly. First, there are no printed instructions included in the box—you’ll need to scan a QR code to access the manual online. While the digital guide is clear enough, having a physical manual on hand would’ve made the process smoother. Additionally, the mounting process requires a fair amount of force. It’s not overly complicated, but aligning and securing everything does take some effort and patience. Definitely don’t rush the install. Fan noise can be noticeable under heavier loads. During gaming sessions with high or ultra settings—especially when paired with a high-performance CPU like the Ryzen 7 9800X3D—the fans spin up audibly to maintain cooling. That said, thermal performance is excellent, with CPU temperatures typically staying under 60°C, even during intense gameplay. If you prefer a quieter setup, you can adjust the fan curve or switch to a quiet mode, but expect temperatures to rise slightly—usually by around 5–7°C. Another option to consider down the line is upgrading to Noctua fans for improved acoustics without sacrificing cooling performance. It’s a worthwhile investment if noise levels are a concern for you. In summary, this cooler delivers strong thermal performance, especially for high-end CPUs, but comes with a few minor drawbacks: a more involved installation process, no printed manual, and fan noise under load. If you’re okay with those trade-offs—and possibly planning a fan upgrade in the future—it’s a solid choice that gets the job done well.

Michelle · 2025-09-07 · via amazon

MSI

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Newegg

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Newegg (Open Box)

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VALUE SCORE

Price

$46.07