Dynatron A34 AMD Threadripper EPYC Passive 2U Server Heatsink

In this review the Dynatron A34 is presented as a targeted cooling solution for compact rack servers and workstations running high-core AMD CPUs. The bottom line: it is a straightforward, well-engineered passive heatsink that supports AMD Threadripper (sTRX4, TR4) and AMD EPYC (SP3) platforms and is best for installations where airflow comes from chassis fans rather than a tower cooler. For systems that need silent, low-profile cooling in a 2U chassis and can provide case airflow, the A34 delivers reliable passive dissipation up to its 180 watt rating.

Key Features

• Socket compatibility: Designed to fit AMD Threadripper sTRX4 and TR4, and AMD EPYC SP3 sockets for direct compatibility with high-core workstation and server CPUs.
• Passive 2U form factor: Low-profile design is intended for 2U server bays where a fanless heatsink is required and chassis airflow does the active cooling work.
• Heat dissipation: Rated to handle up to 180 watts of CPU heat dissipation, making it suitable for many workstation and light server loads within that power envelope.
• Construction: Aluminum base with stacked aluminum fins and embedded heatpipes provides a balance of lightweight construction and effective heat spread for passive operation.
• Thermal interface included: Ships with pre-applied Shin-Etsu 7762 thermal paste for immediate installation and consistent thermal contact without separate paste application.
• Compact footprint: With dimensions of 4.45 in x 3.15 in x 2.52 in, it fits tight chassis spaces where taller coolers cannot be used.

Who It's For

The Dynatron A34 is aimed at system builders and IT professionals assembling 2U servers or compact workstations that use AMD Threadripper or EPYC processors and rely on chassis fans for active airflow. It is especially suitable when quiet operation is required and there is sufficient directed airflow across the heatsink.

It is not the right choice for users who expect to cool CPUs that regularly exceed 180 watts under sustained load, or for hobbyist desktop builds that lack directed case airflow. Systems needing larger thermal headroom or dedicated CPU fans should consider taller active coolers instead.

Pros & Cons

Pros

• Solid passive design that fits 2U chassis and supports both Threadripper and EPYC sockets.
• Aluminum stacked fins with heatpipes offer good thermal spreading for a low-profile heatsink.
• Pre-applied Shin-Etsu 7762 thermal paste simplifies installation and ensures consistent interface performance.
• Compact dimensions let it fit in constrained internal spaces where taller coolers cannot.

Cons

• Rated to 180 watts, so it may be undersized for heavily overclocked or very high TDP configurations.
• Being passive, it depends on adequate chassis airflow; without it cooling will be insufficient.

Specifications

Brand	MITXPC
Supported sockets	sTRX4, TR4, SP3
Maximum dissipation	Up to 180 Watts
Materials	Aluminum base, aluminum stacked fins with heatpipes
Thermal compound	Pre-applied Shin-Etsu 7762
Dimensions	4.45 in x 3.15 in x 2.52 in

Our Verdict

The Dynatron A34 is a practical, value-minded passive heatsink for 2U servers and compact workstations using AMD Threadripper or EPYC processors, provided the system supplies adequate case airflow and the CPU power stays near or below 180 watts. It offers a clean, low-profile build, useful thermal materials and easy installation with pre-applied Shin-Etsu paste, making it a good choice for silent rack builds that match its thermal envelope.

Frequently Asked Questions

Can this heatsink be used in a 1U server?
It is designed for 2U chassis height and will likely be too tall for 1U servers; verify chassis clearances before ordering.

Does it include thermal paste?
Yes, the A34 ships with pre-applied Shin-Etsu 7762 thermal paste on the contact surface.

Will it cool a Threadripper 2950X under full load?
If the processor sustained power is within or below 180 watts and case airflow directs air over the fins, it can manage the load; for higher sustained TDPs an active or larger cooler is recommended.