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A green 288-pin DDR4 memory module with black chips and a silver label

Axiom

Axiom MP2933RG/64G-AX 64GB DDR4 2933 ECC Registered memory upgrade

SKU CH-BK6D-7HFGF MPN MP2933RG/64G-AX

64GB DDR4 2933 ECC Registered memory for Mac Pro Tower/Rack (Late 2019)

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23466)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Product type288-Pin DDR4 SDRAM
  • 64GB capacity expands Mac Pro memory headroom
  • DDR4 2933 speed matches Late 2019 system requirements
  • ECC Registered design protects data integrity under load
  • CL21 CAS latency delivers responsive access timing
  • 20V operation keeps power draw efficient

Mac Pro memory upgrade

This 64 GB DDR4 module is built for the Apple Mac Pro Tower and Rack models released in 2019. It delivers registered ECC operation at 2933 MT/s with a CAS latency of 21 and runs at the standard 1.20 V. The 288-pin form factor matches the system's DIMM slots exactly.

Thermals and power draw

Registered ECC DDR4 at 1.20 V keeps power draw low and heat output modest inside the Mac Pro's thermal zone. The module operates within the platform's specified voltage envelope, so the system's existing cooling handles it without extra fan noise. No additional power connectors or active cooling are required.

Build integration

The stick plugs directly into the Mac Pro's DDR4 DIMM slots and is recognised by the firmware without manual configuration. It frees the builder from hunting for compatible server-grade memory and avoids the instability that non-ECC or unbuffered modules can cause in this platform. Buyers who need more than 64 GB per slot or who are upgrading a different workstation cannot use this part.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,849.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $28.91 per GB
Pricier than about 82% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameAxiom
Model nameMP2933RG/64G-AX
Total capacity64 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2933 (PC4 23466)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple - Mac Pro Tower/Rack (Late 2019)

Questions about this item

How do I install this 288-pin DDR4 2933 module in a Mac Pro Tower/Rack (Late 2019) and what step is commonly missed?

Power down, unplug, open the enclosure, and seat the registered ECC module firmly until the ejector clips lock; the step often missed is verifying macOS reports the full 64 GB at 2933 MHz after boot.

What maintenance or replacement will this 64 GB registered ECC kit need over its service life?

No routine maintenance is required; if a module fails, macOS will log corrected ECC errors, at which point the faulty stick must be replaced with an identical DDR4 2933 registered part.

What limit appears first when this CL21 1.20 V memory runs sustained workloads in the Mac Pro?

The memory controller’s thermal throttling point is reached before the modules exceed their rated 2933 MT/s speed or 1.20 V operating voltage.

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