Mega Size Air Cooler: Deepcool Assassin IV CPU Cooler Review & Benchmarks

The Deepcool Assassin IV CPU air cooler is one of the larger towers on the market, but primarily in one dimension -- it keeps the height in check by shoving a 140mm fan deeper into the cooler, allowing better side panel clearance. We tested the cooler with 2 vs. 3 fans, looking at push-pull vs. just pull (technically), and also benchmarked it against other mainstays like the Thermalright Peerless Assassin, Noctua NH-D15, and liquid coolers. The Assassin IV is one of the best air coolers we've tested recently, but it also bears a high price tag. This is a cooler that's sold on the grounds of quality, not value, and so we closely inspect build quality and ease-of-installation features.



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TIMESTAMPS

00:00 - A High-End Air Cooler
01:36 - Battle of Price
02:43 - Assassin IV Mechanical Design & Features
04:54 - Smart Concave Design
05:57 - Attention to Detail, Concerns, & Quality of Life
07:05 - Fan Whine Noise Sample & Spectragraph
08:35 - Thermal Testing: 200W at 100% Fan Speed
11:16 - VRM Thermals
11:58 - Noise-Normalized Thermal Benchmarks
12:59 - Pressure Testing
14:13 - Flatness Analysis
14:53 - Fan Compatibility Good & Bad
17:31 - Installation Process
19:42 - Mechanical Criticisms & Critiques
20:32 - Conclusion

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Steve Burke | Host, Test Lead, Testing
Mike Gaglione | Host, Testing
Video | Vitalii Makhnovets

[Michael-OBrien]

That second angle camera is a great addition. Your production quality is now being raised to the level of attention you review your hardware.

[ParotandArmorfinish]

I’m very excited for the new era of clean looking computer parts. I always built in a plain black tower with no glass because every graphics card looked like it was one of those pocketknives you get at the mall

[jimc]

"People tend to not like whiny types of noises coming out of fans..." Are we still talking about air cooling solutions here?

[Jeremyxx]

Thermalright has an extra couple of models available now. Mainly the Frost Spirit and the Frost Commander on the "high" end. Hopefully you guys will take a look at those soon.

[Lucius]

I'm glad you are giving so much attention to detail when it comes to noise caused by the fans. Sometimes it is a pain to try and find proper fans to cover that aspect, and Noctua definitely puts money on it.

[JackDangerous]

Recently bought the Thermalright Peerless Assassin after watching your review to cool my 5800x3D and it's amazing even with the fans always set to 50% and is as quiet as nVidia when people ask them about crypto sales. Before i got that I was thinking of getting the Deepcool from one of your other videos but after researching online i found out there was a big issue with "humming" fans for a lot of users, which is sad because i like the design of these new Deepcool coolers a lot.

[chaindead]

Assassin is such a "cool" name, nobody would buy Deepcool Nerd IV.

[friedpickle]

Another thing GN, this cooler will never give you problems with ram clearance due to the fan setup. That's a nice benefit.

[surft]

Having bought their AK620 I really like the design aesthetic that DeepCool is going for without sacrificing(much) performance. Very clean. I am really tempted to buy this as well but maybe wait for a version 2.

[cavedon.felipe]

Got say I really like seeing Deepcool around. I've been using their stuff for a while now and I've always thought it was underappreciated.

[iryan]

Would have liked to see the Noctua U12A on the charts also

[astreakaito]

Really tempted by this, it looks cool. My mATX case is a black cube too and it would be extremely funny if the CPU cooler inside was also a black cube! :D

[DangerGnom]

For the middle fan replacement: there are fans for example from Scythe, that are rounded. The "Kaze Flex Round" series. But fans in this shape are more a niche and harder to find.

[TheVillainOfTheYear]

When your Peerless Assassin review went live, I immediately bought one. I knew it was going to sell out. 100% satisfied, it's amazing. Can't believe it's so cheap and available. Thermalright is just the go to cooler brand now.

[renzokukeng]

Thanks for the review team! I'll look at this for upgrading my next build, excellent build by deepcool

[aaronlee]

Thanks for covering this CPU cooler. Was waiting for your review.

[JackTotGaming]

Great review as always! One thing to mention that is big for a lot of people is ram clearance and aesthetics. These are areas where this cooler excels. If not for ram clearance I would go with a Noctua d15 but this thing looks better and allows me to keep my rgb memory

[noahbirdrevolution]

Just got the thermalright peerless assassin for my recently purchased 5800x. Blows my old hyper212 evo away (actually not hitting thermal limits when gaming) & mounts so much better.

Props to GN for the tireless work so my ol am4 can continue on for another few years.

[creedus]

I love that your channel directly attributes credits to efforts

[purplepothos]

The clean aesthetic alone looks worth the price if it's going into a minimalist-styled build that is meant to be shown off to some degree.