ARCTIC Freezer 4U-M for AMD: SP6, sTR5, SP3, TR4, sTRX4, SWRX8 and Intel: LGA4189, LGA 4677-4U & UP, Server CPU Cooler, 2 x 1

4.3 4.3 out of 5 stars | 46 ratings

Price: 64.2

Last update: 03-24-2025


About this item

COMPACT: The Freezer 4U-M is your space-saving solution. It won't disrupt your RAM slots and is compatible with dual-CPU motherboards. It's compact design fits seamlessly into 4U server cases and larger, saving you valuable space
HIGH-PERFORMANCE: Featuring two custom-designed 120 mm fans, the Freezer 4U-M ensures outstanding heat dissipation. Fine-tune your performance with PWM control for optimized operation
DURABLE: Our Freezer 4U-M features 120 mm fans equipped with double ball bearings, engineered for continuous operation. They're ultra-durable, making them the ideal choice for 24/7 use
EASY INSTALLATION: The Freezer 4U-M comes complete with thermal paste, pre-installed mounting brackets, and utilizes our exclusive mounting points, making installation a breeze.
Specially designed air cooler by ARCTIC for the high-performance server CPUs from AMD and Intel

Product Description

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Versatile Multicompatible Server Cooler

The Freezer 4U-M stands as a multi-compatible server cooler, boasting an expansive contact surface and an enhanced mounting mechanism. It now offers compatibility with a wide range of Intel and AMD server processors, including Intel's LGA4189 and LGA4677, as well as AMD's SP6, SP3, sTR5, TR4, sTRX4 and SWRX8 sockets. Remarkably, despite its impressive cooling capabilities, the Freezer 4U consumes a mere 2.88 watts, ensuring exceptional efficiency in cooling even the most powerful processors with up to 96 cores and a TDP of up to 350 Watts.

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RAM Compatibility and Clearance

The Freezer 4U offers a spacious 53 mm of RAM clearance, allowing for the use of memory sticks with moderate heatsinks.This clearance allows efficient airflow and enables compatibility with different RAM variants.

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Compact Design and Dual Socket Compatibility

With an optimised installation height of only 145 mm, it fits into both classic 4U server racks and most consumer 4U cases available on the market. The Freezer 4U features a compact design with dimensions of just 156 x 124 mm. This also makes it suitable for dual-socket motherboards. To adjust the airflow direction if required, the fans can be easily swapped over.

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Powerful Fans in Push-Pull Configuration

The installed PWM fans benefit from all the advantages of the award-winning P series. Designed for static pressure, the fans are ideal for the Freezer 4U-M's high fin density and provide efficient heat dissipation in push-pull mode, even in power-hungry applications. Especially office workstations benefit from the quiet fans. The dual configuration also allows for inherent redundancy and protects the system from total shutdown caused by heat.

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Designed for continuous operation

Both fans of the Freezer 4U-M are equipped with dual ball bearings, which allows for 24/7 continuous operation without the slightest compromise in performance. This type of bearing is much more resistant to defilement and wear caused by high temperatures than conventional sleeve bearings or Fluid-Dynamic bearing and is therefore the perfect choice if you want to ensure fault-free continuous operation.

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Premium Thermal Paste Included

The Freezer 4U-M comes with MX-6 thermal paste. ARCTIC's Ultimate Performance thermal paste reduces the heat build-up between the heatspreader of the CPU and the cooler. The thermal paste is neither conductive nor capacitive and therefore absolutely safe to use.

Technical Specifications

General Data

Compatibillity: AMD: SP6, SP3, sTR5, TR4, sTRX4, SWRX8; Intel: LGA4189, LGA4677; Server Rack Unit; 4U & up; Operating Ambient Temperature: 0–40 °C; Fan: 120 mm PWM Fans x2; Thermal Compound: ARCTIC MX-6 0.8 g Syringe incl.

Heatsink Specifications

Heat Pipe: Direct Touch, Ø 6 mm x 8; Number of Fins: 57; Fin Material: Aluminium

Fan Specifications

Fan Speed: 400–2300 rpm PWM Controlled; Connector:4-Pin Plug; Cable Length: 200 mm; Bearing: Double Ball Bearing; Noise Level: 40 dBA; Current | Voltage: 0,12 A | 12 V DC; Startup Voltage: 8 V DC

Size & Weight

Dimensions: 124 mm (L) x 156 mm (W) x 145 (H) mm; Weight: 1275 g

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Top reviews from the United States

  • Brandon R. Foster
    5.0 out of 5 stars Epic Cooler for an Epyc CPU
    Reviewed in the United States on November 11, 2024
    Excellent value for the money. Keeps AMD 7551 around 47-48c. Pretty silent and best of all fits in a 4u case. Very sturdy cooler. Great airflow and performance.
  • Cameron T.
    5.0 out of 5 stars My EPYC server has never been cooler! It fits well in most 4U rack mount cases.
    Reviewed in the United States on December 26, 2024
    I bought this cooler so I could fit my EPYC build into a 4U Rosewill rack mount case. Previously, I had the server installed in a full ATX tower Fractal Design Define 7 XL case. There's significantly more clearance in the tower case than the 4U so I needed something that could cool effectively and was slimmer than my previous cooler. I've been happily running the cooler for the past few months without any issues and it keeps my 32C/64T EPYC 7452 performing well.
  • Aleksey
    4.0 out of 5 stars Great Temps, Quiet, but Proprietary
    Reviewed in the United States on March 30, 2024
    I have this thing strapped to an EPYC 7502 and at idle this thing runs a ambient temps at just 900rpms, absolutely wild. If you have a 4u or ATX case and a Epyc or Xeon Scalable CPU this air cooler has amazing performance, and unlike Noctua coolers for similar sockets it allows you to have your Cooler airflow inline with a front to back airflow rather that bottom to top. The one downside is the Fans, while the design does prevent any spacing conflicts with ram, they're also of a proprietary design luckily you get 2 so you could limp by with one I tested just a single fan and it still holds temps at decent levels under max load. But I have no clue how to get a replacement without dealing with a warranty claim, unlike other air coolers simply slapping a new fan on is simply not an option. So you'll have to get creative with zip ties, brackets, or perhaps even 3D printing a new mounting solution.
  • WeegeeNumbuh1
    5.0 out of 5 stars Works very well with Threadripper! (the Rev. 2 version has supplanted this model)
    Reviewed in the United States on January 30, 2025
    Needed something while I waited for watercooling parts for a Threadripper build and didn't need anything premium like a Noctua.

    The 4U-M (and as of this review supplanted by the 4U-M Rev. 2) works well, easily handling a constant 300W socket draw, and could maintain 350W as long as the cooler has access to cool fresh air. I could even maintain a slight overclock at 380W power if I cranked the fans to max.
    As for the fans, they are fine, as they're similar to the Arctic P12's, but adapted for this cooler.
    Arctic also provides 3D models for printing if you choose to use other standard fans for this.

    The heat pipe contact could use a little more coverage; photos in this review show the exact contact patch on a Threadripper CPU. It is adequate and as previously mentioned it handled the stock TDP of the processor without issue.

    All of this cooling for $55!
    Customer image
    WeegeeNumbuh1
    5.0 out of 5 stars
    Works very well with Threadripper! (the Rev. 2 version has supplanted this model)

    Reviewed in the United States on January 30, 2025
    Needed something while I waited for watercooling parts for a Threadripper build and didn't need anything premium like a Noctua.

    The 4U-M (and as of this review supplanted by the 4U-M Rev. 2) works well, easily handling a constant 300W socket draw, and could maintain 350W as long as the cooler has access to cool fresh air. I could even maintain a slight overclock at 380W power if I cranked the fans to max.
    As for the fans, they are fine, as they're similar to the Arctic P12's, but adapted for this cooler.
    Arctic also provides 3D models for printing if you choose to use other standard fans for this.

    The heat pipe contact could use a little more coverage; photos in this review show the exact contact patch on a Threadripper CPU. It is adequate and as previously mentioned it handled the stock TDP of the processor without issue.

    All of this cooling for $55!
    Images in this review
  • Anon
    5.0 out of 5 stars Great heatsink
    Reviewed in the United States on January 11, 2024
    Installation for sTR5 was a little unintuitive (since I didn't watch the guide first) but once I figured out how the screws needed to be installed through the mounting bracket and into the heatsink it was a breeze. The adjustable fans really help with ram/vrm fan clearance too, this cooler fits my Asrock trx50 ws perfectly with just the front fan shifted up 3 or 4 cm.

    Overall, this is a great heatsink at a competitve price
  • ...
    3.0 out of 5 stars Sometimes it fits, sometimes it doesn't.
    Reviewed in the United States on October 20, 2024
    I've purchased two of these. One was used for an Epyc server and the other for a Threadripper workstation.

    It works really well when fans are in a front to back configuration, like a RomeD8-2T board. However, when installing onto a SP3/TR4 that has a top/bottom fan orientation (like a x399 board), it will likely block your first PCIe slot. Also, if you have a VRM heatsink installed on the board, it will likely make contact. You can move the fan up some to clear it (depending on your chassis) or remove the VRM heatsink, but these options are not optimal at all. Even with that done, you may not be able to close your case.

    The main issue with all of this is the thickness of the fan shrouds. Since the fans and cooler are a proprietary design, replacing the fans isn't as simple as throwing on a couple 120MM. You'll need to get creative with zip ties or other methods for attaching other fans.

    That said, when it fits properly, it works great.
  • DG
    1.0 out of 5 stars ASROCK WRX80 ... it does not fit
    Reviewed in the United States on January 10, 2024
    It does not fit, after installing the cooler i slide the fans into place and .... clunk, the bottom of the fan that mounts near the back of the motherboard / case hits the shroud on the motherboard heat sink at the back of the mother board, they needed to make the cooler stand about a 1/2 inch taller to provide clearance, even if the motherboard head sink shroud was not there it would still hit the two little fans beneath. It is still usable but not as intended, I hope it provides adequate cooling ,
  • Anton
    5.0 out of 5 stars Great SP3 cooler
    Reviewed in the United States on December 21, 2023
    This is a great 4U cooler that has a proper orientation for the SP3 socket. Installation is easy. Fans are quiet.
    Customer image
    Anton
    5.0 out of 5 stars
    Great SP3 cooler

    Reviewed in the United States on December 21, 2023
    This is a great 4U cooler that has a proper orientation for the SP3 socket. Installation is easy. Fans are quiet.
    Images in this review

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