Best CPU Coolers for Ryzen 9 5900X

Since AMD released their new Ryzen 9 series of CPUs, many people have been wondering which CPU cooler is best for this lineup. The 5900X in particular has a TDP (thermal design power) of 205W and can be overclocked to 4.7GHz with the right cooling solution. So we put together a list of the best coolers on the market.

Some people may ask themselves “why?” when it comes to cooling the 5900X. In my opinion, there are two main reasons: cooler temperatures and lower noise levels. The Ryzen 9 CPUs have a reputation for being incredibly hot and overclocking usually means running them at very high frequencies, which can lead to even higher temperatures. Lowering your CPU temperature not only extends its lifespan but also reduces the overall noise signature of your PC setup. So if you’re building a new gaming rig with a Ryzen 9 or just looking for an upgrade from your current solution, here are some products you might want to look into.

We’ve included both air and liquid coolers in our list, depending on each user’s preferences for size and noise. All of the items on this list are compatible with socket AM4.

1. Noctua NH-D15

Noctua NH-D15 CPU Air Cooler

  • 140x140x25 (with 120mm mounting holes), 120x120x25
  • Copper (base and heat-pipes)
  • Soldered joints & nickel plating
  • Aluminum (cooling fins)
  • 6 heatpipe dual tower design

Notable specifications: Dimensions (HxWxD) – 160 x 150 x 135mm; weight – 2.28kg; NF-A15 PWM fan and NF-A9 PWM fan; max RPM 1000/1500; max airflow 93/103 CFM, 3.52/2.93 mmH20 static pressure | Review

For many years, Noctua has been considered the go-to brand when it comes to PC cooling and they definitely lived up to that status with their newest cooler, the NH-D15. Featuring two premium-grade NF-A15 PWM fans, the NH-D15 is incredibly efficient at cooling this CPU. You can also use it with their NF-A12x25 120mm fan if you plan on using a Ryzen 7 processor instead.

The cooling design consists of six heat pipes, a copper base plate, and aluminum fins. The latter is soldered to the heat pipes in order to provide better heat transfer between them and your system’s components. Overall build quality is top-notch and Noctua provides an industry-leading 6-year warranty as proof of their trust in this product’s ability to handle regular use (even under extreme clocking scenarios). This quiet and powerful cooler comes at a hefty price but those who invest now will surely enjoy the benefits during the years to come.

2. Deepcool Assassin II


  • SuperSpeed USB
  • CPU cooler air cooling 200 W
  • 25.9 x 31 x 35 Centimeters

Price: $69 [Amazon], MSRP [no official website]

Notable specifications: Dimensions (HxWxD) – 158 x 136 x 162mm; weight – 1250g; two 120mm fans and 3-speed fan controller | Review

Deepcool has been around for a number of years and whether you’ve heard about them or not, they’ve often released high-quality products that tend to be attractive in terms of value and specifications/performance ratios. Their latest CPU cooler is no exception and while it’s still relatively new on the market, we can safely say that this is one of their best works so far. The Assassin II sports a stylish all-black design with orange accents and can be purchased with either a pair of 120mm fans or a single 140mm fan.

Both configurations come with a three-speed controller that allows precise RPM regulation from 600 to 1800. The extra performance is available when needed and the noise levels are also reduced thanks to the two anti-vibration rubber pads on each side of the heatsink. In terms of cooling efficiency, you get six heat pipes, aluminum fins, and dual 92mm fans that push air through them in order to dissipate excess heat into the outside environment. Overall build quality is very high and Deepcool backs this product up for 2 years which should give some peace of mind when considering this CPU cooler.

3. Be Quiet! Pure Rock

Be quiet! BK009 Pure Rock

  • 150W TDP Intel
  • Compact design saves space
  • The design supports mounting from atop the mainboard, greatly increasing convenience
  • Compatibility with all current Intel and AMD socket

Price: $31.45 [Amazon], [MSRP]

Notable specifications: Dimensions (HxWxD) – 100 x 130 x 150mm; weight – 875g; 2x 6mm heatpipes and aluminum fins | Review

When it comes to silent PC builds, Be Quiet is a name every enthusiast should know about. The German company has been around for many years now and its products are known for achieving some of the lowest noise levels on the market while still offering great performance/value ratios. Their latest cooler, called Pure Rock, provides rather balanced cooling capabilities that won’t disappoint even during overclocking sessions. Featuring four 6mm copper heat pipes and an array of aluminum fins, this CPU cooler can easily handle overclocked CPUs even with its compact design.

As usual, you’ll find two high-quality Silencio fans that are designed to minimize excess noise while still providing up to 2000 RPM of airflow. The maximum noise level is stated at 30 dBA which makes the overall solution perfect for those looking into building silent HTPCs or quiet office PCs without compromising performance. Just like all other Be Quiet! products, the Pure Rock comes with a 3-year warranty and there’s also an option for replacing these fans with even more silent models if needed.

4. Be Quiet! Dark Rock TF

Be Quiet! BK020 Dark Rock TF Low Profile

  • Noise is a scant 26.7dB(A
  • 100% PWM function
  • 6mm heat pipes with aluminum caps

Price: $67.33 [Amazon], MSRP

Notable specifications: Dimensions (HxWxD) – 134 x 161 x 162mm; weight – 1250g; 2x 6mm heatpipes and aluminum fins | Review

This massive CPU cooler will certainly make an excellent addition to the most powerful systems out there. Featuring six 6mm thick copper heat pipes, aluminum fins, and two SilentWings PWM fans with a maximum speed of 1500 RPM, this cooler comes with everything you need to keep your rig’s temperature low even when overclocking or during heavy-duty work sessions.

The design is identical to other heatsinks from Be Quiet! but it doesn’t mean that they’re all equal because each one of them is specifically tailored for different CPUs. In this case, what you get are higher performance levels that were made possible thanks to an upgraded base plate as well as additional heat dissipation channels on each side of the heatsink. As always, SilentWings fans come with high-quality construction (nine blades, fluid dynamic bearing) and ultra-low noise levels. Other notable things are vibration-absorbing rubber pads, the low-speed adapter cable for reducing fan speed to 800 RPM, and a 3-year warranty.

5. Cooler Master Hyper 212X

Cooler Master Hyper 212X – Premium Air CPU

  • 4th generation bearing – MTB
  • Supports all current CPU sockets
  • Patented CDC technology
  • 2 Years Warranty

Notable specifications: Dimensions (HxWxD) – 120 x 51 x 159mm; weight – 505g; 4x direct contact heatpipes | Review

Hyper 212 is probably one of the most popular CPU coolers on the market right now but it’s not just its mainstream popularity that made us decide to include it in our top. With four direct contact heat pipes made out of copper, this cooler comes with wide compatibility (socket LGA 2011, 1150, 1155, 1156, 1366, AM2/+, AM3/+, FM1/+) and high-performance cooling capabilities. It uses a 120mm PWM fan that can rotate between 600 to 1500 RPM but there are several compatible models if you’re interested in removing the standard one in order to add a more silent one.

As far as noise levels go – this cooler will provide up to 37 dBA which is decent considering how much airflow it offers. All important mounts are included out of the box alongside additional brackets for various AMD CPUs. Build quality is decent overall so there’s nothing separating this unit from premium coolers when talking about long-term reliability.

6. Scythe Mugen 4 Rev.B

Mugen 5 Rev. B CPU Cooler

  • KazaFlex FDB PWM fan
  • Asymmetrical design
  • H.P.M.S. II
  • AM4 mounting system

Price: $45.99 [Newegg] | $42.00 [Amazon]

Notable specifications: Dimensions (HxWxD) – 133 x 150 x 160mm; weight – 955g; 4x Ø 6mm heatpipes and aluminum fins | Review

Scythe Mugen 4 is one of the best CPU coolers you can find for under $50 but it definitely has some flaws that prevent us from giving it a top spot on our list. Even so, this model still offers very decent performance levels despite its compact design which is basically what makes it suitable for all sorts of situations.

Each of its four Ø6mm copper heat pipes is made from high-purity copper and this entire cooler comes with one 140mm PWM fan that rotates between 600 to 1200 RPM. If you don’t plan on overclocking your CPU or using a powerful cooling agent, there’s a good chance this cooler will fit all of your needs.


As you can see, there are plenty of great CPU coolers that will fit any budget but it all comes down to personal preference. If silence is your primary concern then check out Noctua NH-U9B or Scythe Mugen 4 because both models are excellent when it comes to low noise levels.

If you’re looking for the best overall performance/noise ratio, check out Be Quiet! Dark Rock 3 or Cooler Master Hyper 212X considering how both coolers offer great all-around results with relatively low noise levels.

Whatever you end up choosing, make sure that it’s compatible with your system’s form factor and supported sockets because there’s no point buying a new cooler when you can’t use it.

If this article didn’t help you in any way, feel free to drop a comment below and we’ll try to answer your question as soon as possible. If you’d like us to add anything in particular then make sure that you post it at the end of this guide because other people might find it useful too.