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Square aluminium heatsink with copper base and heatpipes, 64 mm tall

Dynatron

Dynatron B12 CPU cooler LGA 3647 64 mm 590 g

SKU CH-W331-ZXTW5 MPN B12

Aluminium heatsink with embedded copper heat-pipes fits LGA 3647 Xeons in 2U servers, 64 mm tall and 590 g

  • Supported CPU socketsIntel LGA 3647
  • Cooler materialAluminum Heatsink, Copper Base with Heatpipes Embedded
  • Fan mountingVertical
  • CPU cooler height limit64 mm
  • Heatsink dimensions90 × 90 × 64 mm
  • Product typeHeatsinks only
  • Fits 2U servers with a 64 mm low-profile design
  • Copper base with embedded heatpipes draws heat from the CPU efficiently
  • Pre-applied Shin-Etsu 7762 thermal grease saves installation time
  • Lightweight 590 g aluminium heatsink reduces motherboard stress
  • Vertical fan mounting directs airflow straight through the fins

Socket LGA 3647 Server Cooler

The Dynatron B12 is a passive heatsink designed for Intel Xeon processors using the LGA 3647 socket. It targets system integrators building 2U rack servers or taller chassis where a low-profile thermal solution is required. The unit ships with Shin-Etsu 7762 thermal compound already applied to the copper base.

64 mm Height Constraint

This cooler measures 64 mm tall and fits the vertical space of a 2U server enclosure. The aluminium fin stack sits on a copper base with embedded heatpipes, transferring heat upward for a chassis fan to exhaust. Builders using 1U cases or custom enclosures with less clearance cannot use this model.

Square ILM Mounting

Installation relies on the square Independent Loading Mechanism native to the LGA 3647 platform. The package includes only the heatsink; no fan or mounting hardware for other socket types is provided. Buyers needing active cooling or compatibility with different server sockets must select a different product.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $47.99
Pricier than about 89% of the 1,559 comparable items (median $19.99).

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Specifications

Product
Brand nameDynatron
Model nameB12
Product typeHeatsinks only
Size & build
Cooler materialAluminum Heatsink, Copper Base with Heatpipes Embedded
Fan mountingVertical
Heatsink dimensions90 × 90 × 64 mm
Product weight590g
Shipping weight0.68 kg
Package size137 × 112 × 112 mm
Compatibility
Supported CPU socketsIntel LGA 3647
CPU cooler height limit64 mm

Questions about this item

Which fan should I pair with the B12 for my 2U server build?

The B12 uses vertical fan mounting on a 90 mm square base; choose a PWM fan rated for server airflow that fits the 64 mm height limit.

Will the 64 mm height fit in a standard 2U rack chassis?

Yes, the 64 mm height is designed for 2U server and up, leaving clearance for the chassis lid and airflow.

Does the LGA 3647 socket support Xeon Platinum and Gold processors?

The B12 is built for the Intel LGA 3647 socket used by Xeon Platinum and Gold families with Square ILM.

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