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My experience with the DeepCool AK620 Zero Dark CPU Cooler (2024)

My thoughts on the DeepCool AK620 Zero Dark CPU cooler: bold design, efficient cooling, value.
Ronald Hall



November 21, 2023


For my new pc build I recently bought the DeepCool AK620 Zero Dark CPU Cooler. It’s a product that’s gotten good reviews for both its looks and performance. As someone who values the aesthetics of my PC build as much as its functionality, I highly appreciate this - more on this below.


Property Value Property Value
Product Dimensions 5.43”L x 5.08”W x 6.3”H Brand DeepCool
Power Connector Type 4-Pin Voltage 12 Volts
Wattage 1.44 watts Cooling Method Air
Compatible Devices Desktop Noise Level 28 dB
Material Polybutylene Terephthalate, Aluminum, Copper Maximum Rotational Speed 1850 RPM


Click on photos to enlarge them:

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Aesthetic and Design

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As a PC enthusiast, the visual impact of hardware is nearly as important as performance. The DeepCool AK620 Zero Dark CPU Cooler caught my eye for this reason. It literally looks like it means business with its sleek all-black finish that screams sophistication. The dual-tower design with “Chessboard” fins provides a distinct, modern flair. Here’s a quick rundown of what I like and don’t about the cooler’s aesthetics:


  • All-black finish fits any build

  • Minimalistic design stands out

  • Quality of materials feels premium


  • Size can be overwhelming in smaller cases

  • Possible alignment issues; mine was slightly off

The first thing I noticed upon unboxing was its weight and build quality—substantial without feeling like I’d need to reinforce my motherboard. The black color scheme was a perfect match for my “Black Samurai” inspired build, keeping everything consistent and stealthy. However, I can see it possibly overpowering a smaller, more cramped case where nuances in aesthetic are lost to size constraints.

Let’s talk design—DeepCool’s minimalistic approach shines here. The ‘Chessboard’ pattern on the top is not just for looks but designed to optimize airflow, showing that form can follow function. This little detail is one of those things that keeps my gaze locked on my PC, admiring the craftsmanship.

But it’s not all about silent praise. I ran into a slight hiccup with the heatsink alignment—it was just a tad lower on one side. Now, for some, this might be a deal-breaker or an OCD trigger, which is a shame for such a well-designed product. It’s not a performance issue, but when you’re gunning for visual perfection in a build, these things matter.

While I haven’t had any beef with the size, it’s significant enough to jot down as a potential con. If you’re a fan of symmetry and sleek lines, make sure your case can handle the height of this unit. Also, bear in mind the big guy could overshadow your RAM, especially if it’s got RGB or high heat spreaders.

Overall, I’d argue the design detail and substantial look justify the bulk. The DeepCool AK620 Zero Dark CPU Cooler is a stunner and does its job without turning your rig into a light show. It’s understated yet impressive—the kind of cooler that invites you to gaze deep into your case and appreciate the harmony of good design meeting solid performance.

Performance and Cooling Efficiency

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As I put the DeepCool AK620 Zero Dark CPU Cooler through its paces, the performance and cooling efficiency were front and center in my evaluation. Here’s what stood out to me:

  • Heat dissipation: The cooler boasts six all-black heatpipes and a raised copper coldplate. They work in harmony to draw heat away from my CPU, which has definitely reflected in reduced temperature readings.

  • Airflow: With dual 120mm FDB fans pushing 68.99CFM, the airflow is substantial. It’s this feature that really keeps the thermal performance in check, even when I push my system with gaming or rendering tasks.

  • Acoustic performance: Noise levels are usually a dealbreaker for me, but the AK620 manages to stay below 28dB(A) at full load. The inclusion of noise-damping pads and a low-noise adapter aids this, and I’ve got to say, the quiet operation is a huge plus.

However, while the cooling performance is solid, I did notice the fan speeds have sweet spots. Stray outside these areas, and vibrations or resonant noises can crop up. It’s not a dealbreaker, but for absolute silence-seekers, it might take some fan curve adjustments to hit that sweet spot across all usage scenarios.

The cooling performance, as expected from an air cooler of this caliber, is impressive. I’ve experienced a significant drop in temperatures compared to my previous stock cooler. On idle, the DeepCool AK620 holds a steady and cool temperature, while under load, it never seems to be sweating, keeping things much cooler than what I was accustomed to, without the need to crank up the fans to ear-irritating levels.

What’s important to mention here is that the AK620 isn’t just about keeping temperatures low. It also impacts system stability, especially when it comes to overclocking or running intensive tasks for extended periods. There’s a certain peace of mind that comes from knowing your CPU isn’t going to throttle because it’s too hot.

But let’s talk drawbacks: Remember when I mentioned the sweet spots for fan speeds? It’s something to consider if you’re aiming for a whisper-quiet build. Also, while the bulkiness isn’t a flaw given its purpose, it can be a tight fit depending on your RAM and case.

My overall impression is that for anyone looking to maintain or improve their CPU’s thermal performance without breaking the bank and whilst making a style statement, the AK620 Zero Dark is a formidable option. While it’s not whisper-quiet at all times, and it’s sizable, these are small prices to pay for the cooling it delivers.

Installation Experience

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When it comes to CPU coolers, the installation process is often the part that makes or breaks the experience for me. With the DeepCool AK620 Zero Dark, I had quite the mixed adventure, so let’s break it down:

  1. Unboxing and Initial Impressions: The cooler came with all the mounting hardware needed for various CPU platforms, which was a good start. It’s a big plus not to scramble for a fitting screwdriver since they included a nice magnetic one.
  2. Following the Manual: The instructions were generally clear except for some details here and there. The graphics were helpful, but I wish there was a bit more text for clarification.
  3. Mounting Process: This is where things got interesting. The screw alignment didn’t just slide into place easily. It required considerable force, and honestly, if it wasn’t for my confidence with hardware, I might have backed out, fearing motherboard damage.

Now, while the installation had its moments of frustration, let’s highlight some positives too:

  • The screwdriver included was a godsend. It’s magnetic, which really helps with the fiddly bits.

  • The thermal paste pre-applied is quite decent, which is great for beginners or if you’re just in a hurry.

  • The mounting bracket design seems very sturdy once everything is in place – a silver lining after the installation hiccup.

  • RAM clearance is alright, but if you have fancy, tall RAM sticks, you might need to adjust the fan height a bit.

However, the ordeal didn’t end with the installation:

  • The fans, while overall quiet, had some speeds that triggered a buzzing noise. It wasn’t a deal-breaker, but definitely a point to consider if you’re seeking silence.

  • There’s no denying the size of this unit. It fits snugly, but make sure to measure your case beforehand - clearance issues are real.

Despite some hurdles, the cooler is sitting pretty in my build now. It was a bit of a workout getting it installed, but now that it’s in, it feels like a solid part of the setup. I’m knocking a few points off for the install, but once you’re past that, it’s pretty smooth sailing.

So, would I recommend it? If you’ve got the patience and muscle for the install, sure. It’s a robust cooler and does a stellar job once it’s seated correctly, but be ready for a small battle to get there.

Value for Money and Final Verdict

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Weighing the pros and cons is key when it comes to CPU coolers, and I’ve broken down my thoughts on the DeepCool AK620 Zero Dark to make it easy for you:


  • Impressive Cooling: The temps drop significantly. Idle temps are rock-steady, games and stress tests are cooler than expected.

  • Quiet Operation: It’s hard to notice it’s even running during casual use.

  • Installation Tools Included: That magnetic screwdriver included is a lifesaver.

  • Compatibility: Great support for both Intel and AMD platforms.

  • Value: For the cooling performance, it feels like a bargain.


  • Size: It’s a bit bulky. If you’re working with a smaller case or tight quarters, it might be a bit of a squeeze.

  • Installation Force: You need a bit of elbow grease for securing the cooler, which can be a tad unnerving.

So after some serious testing and plenty of use, my verdict on the DeepCool AK620 Zero Dark cooler leans towards a positive note. The performance is up there, keeping pace or even outdoing some pricier cool competitors on the market. Yes, it’s got a bit of heft to it, and you might need to flex a bit during the install—definitely not something to rush through. But get past those hitches, and you’ve got yourself a solid cooler.

I noticed the temps staying nice and chill, even under a decent load, and that’s with a bit of overclocking thrown into the mix. Noise levels? Surprisingly quiet, I almost had to double-check to make sure it was working.

Now, about the installation: ignore the manual’s optimism; you’ll be pushing down harder than you’d like. Not ideal, but once it’s seated, you’re golden. And hey, if you’ve got larger RAM modules, be ready to tinker a bit to get that fit just right.

Price-wise, you’re getting more than what you pay for with this bad boy. In the cooler market, that’s a win in my book. Bottom line, if you’ve got the space in your case and your muscles are prepped for the install, the AK620 Zero Dark is a strong contender that won’t break the bank.

In conclusion, while the DeepCool AK620 Zero Dark isn’t without its quirks, it checks the essential boxes for a budget-conscious, performance-seeking PC builder or gamer. Its thermal capability is commendable, aesthetics are sleek, and the overall value is hard to beat. If you’re on the hunt for a robust air cooling solution, this cooler should be on your shortlist.