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Copper passive heatsink, skived fins, 1U low-profile form factor

Dynatron

Dynatron A37 105 W Ryzen AM4 passive 1U heatsink

SKU CH-X2V8-H8HN2 MPN A37

Passive copper 1U heatsink dissipates up to 105 W for AM4 Ryzen CPUs with pre-applied Shin-Etsu 7762 paste

  • Passive cooling for silent 1U server operation
  • Dissipates up to 105 W for high-performance Ryzen CPUs
  • Copper skived-fin design maximises heat-transfer surface area
  • Pre-applied Shin-Etsu 7762 paste ensures reliable thermal contact
  • Compact 4.17" x 2.91" x 1.06" footprint fits dense chassis

AM4 passive server heatsink

The Dynatron A37 is a copper passive cooler built for AMD Ryzen AM4 processors in 1U rackmount servers. It ships with Shin-Etsu 7762 thermal paste already applied, so installation is straightforward for system integrators. The unit targets environments where active airflow is provided by the chassis rather than an on-board fan.

105 W dissipation limit in 1U form factor

Rated for up to 105 Watts of CPU heat dissipation, the cooler relies entirely on directed chassis airflow across its skived fin stack. In a 1U enclosure this ceiling is reached only when the system fans deliver sufficient static pressure through the 1.06 inch height. Workloads that sustain higher thermal output will require an active alternative or a larger chassis.

Copper skived fins and fixed mounting

The heatsink measures 4.17 by 2.91 inches and uses a copper base with integral skived fins for uniform heat spread. Its mounting pattern aligns with standard AM4 retention brackets, locking the cooler flat against the processor lid. The all-metal construction resists vibration in dense racks, while the pre-applied paste ensures consistent contact without extra assembly steps.

How it compares

Measured against everything we stock in Drive Cages & Server Add-Ons, at today’s prices. Recalculated every night.

Price $42.99
Cheaper than about 68% of the 1,119 comparable items (median $74.99).

New to this? Buying server hardware with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Size & build
Shipping weight0.64 kg
Package size127 × 102 × 51 mm

Questions about this item

Should I choose the A37 or a taller heatsink for my 1U server?

The A37 fits a 1U rack at 1.06 inches tall; a taller cooler would exceed the chassis height limit.

What does the 105 W rating mean once the heatsink is installed?

It indicates the maximum CPU heat load the copper fins can dissipate passively in a 1U airflow environment.

How does the AM4 mounting interface cap the cooler’s compatibility?

The mounting holes match the AMD Ryzen AM4 socket pattern, so the heatsink only fits that platform.

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