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Single green 240-pin DDR3 DIMM with black chips

OWC

OWC 32 GB DDR3 1333MHz ECC Registered 240-pin DIMM

SKU CH-TMKZ-Q51RF

A 32 GB DDR3 ECC registered DIMM running at 1333 MHz for the 2013 Mac Pro

  • TypeMemory Card
  • 32 GB single module expands Mac Pro 2013 memory capacity
  • DDR3 1333 MHz PC3-10600 delivers rated server speed
  • ECC Registered 240-pin DIMM ensures data integrity
  • Quad-rank 2048M x 72 organisation at 1.5 V
  • OWC install tool simplifies user upgrade process

32 GB DDR3 ECC Registered DIMM

This 32 GB DDR3 module runs at 1333 MHz with a PC3-10600 rating and uses registered ECC technology. It is built specifically for the 2013 Mac Pro (MacPro6,1) across the 3.7, 3.5, 3.0 and 2.7 GHz configurations. The 240-pin DIMM operates at 1.5 V with a CL9 latency and includes an OWC installation tool.

Replaces unbuffered memory in a 2013 Mac Pro

The 2013 Mac Pro accepts either ECC unbuffered or ECC registered DIMMs, but the two types cannot be mixed. Installing this registered kit means any existing unbuffered modules must be removed or the system will not boot. The upgrade is worthwhile when the workstation needs the full 32 GB capacity in a single slot and the current memory is unbuffered.

Sustained workload behaviour with registered ECC

Registered buffering reduces electrical load on the memory controller, allowing stable operation during long render or compute sessions. The quad-rank 2048M x 72 organisation delivers 32768 MB of addressable space with error correction active throughout. This design favours multi-hour tasks over short bursts where unbuffered memory would suffice.

Highlights

  • 32 GB single module expands Mac Pro 2013 memory capacity
  • DDR3 1333 MHz PC3-10600 delivers rated server speed
  • ECC Registered 240-pin DIMM ensures data integrity
  • Quad-rank 2048M x 72 organisation at 1.5 V
  • OWC install tool simplifies user upgrade process

Specifications

TypeMemory Card

Questions about this item

Will the 240-pin DIMM fit my 2013 Mac Pro memory slots?

Yes, the 240-pin form factor matches the four user-accessible slots in the Mac Pro 6,1; the included OWC Easy Memory Install Tool helps align the module without forcing it.

What is the correct order for installing the ECC Registered modules?

Populate the slots from the bottom up as shown in the Mac Pro 6,1 service guide; the step people miss is leaving a gap between unbuffered and registered DIMMs, which prevents boot.

When should I consider replacing this 32 GB DDR3 module?

Replace it if macOS reports corrected ECC errors in System Report, if the machine kernel-panics under sustained load, or if you upgrade to a platform that no longer supports DDR3 1333 MHz.

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