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Two green DDR3 ECC RDIMM modules with gold contacts and black chips, no heat spreaders

A-Tech

A-Tech 64GB Kit (2x32GB) DDR3 1333MHz ECC RDIMM memory upgrade

SKU CH-EVRS-863P9

ECC registered DDR3 memory kit totalling 64GB across two 32GB modules at 1333MHz for Apple Mac Pro (Late 2013)

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Compatible systemsApple Mac Systems
  • 64GB total capacity handles heavy multitasking and large datasets
  • DDR3 1333MHz PC3-10600 speed matches Mac Pro Late 2013 specification
  • ECC Registered RDIMM ensures data integrity for professional workloads
  • 240-pin form factor fits Apple Mac Pro cylinder memory slots
  • Validated for MacPro6,1 and order numbers ME253LL/A MD878LL/A MQGG2LL/A

Mac Pro (Late 2013) ECC RDIMM kit

This 64GB kit contains two 32GB DDR3 1333MHz modules built as registered ECC RDIMMs for the Apple Mac Pro cylinder (MacPro6,1). The memory runs at 1.50V and uses major-brand chips on a 240-pin form factor. It is designed to match the system's required ECC registered specification.

Professionals expanding a cylinder Mac Pro

The kit suits editors, developers and scientists who need the maximum 64GB capacity for large datasets, virtual machines or multi-application workflows on MacPro6,1. Buyers with non-Apple workstations, laptops or desktop Macs that require unbuffered UDIMMs cannot use these registered modules. Systems limited to 16GB or 32GB per slot should also look elsewhere.

Registered ECC RDIMM architecture

The decisive specification is the registered ECC RDIMM design; only Mac Pro models that explicitly require registered error-correcting DDR3 1333MHz memory will accept this kit.

How it compares

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

Price $122.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $1.92 per GB
Cheaper than about 94% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR3 Apple Mac RAM Memory Upgrades
Total capacity64 GB (2 × 32 GB)
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How do I install the 240-pin RDIMM modules in the Mac Pro (Late 2013) and which step is often missed?

Power down, unplug, open the side panel, then push each 32GB module straight into a 240-pin slot until the ejector clips click; the step people miss is seating both clips fully so the ECC registered sticks register at 1333 MHz.

What maintenance or replacement will this 64GB DDR3 ECC kit need later?

No scheduled maintenance is required; if a 32GB module fails, replace the faulty stick with an identical DDR3 1333 MHz ECC RDIMM to keep quad-rank 4Rx4 operation intact.

What limit appears first when the Mac Pro runs sustained workloads with this memory?

The memory controller caps bandwidth at DDR3 1333 MHz PC3-10600, so throughput plateaus there before the 1.50 V registered DIMMs hit any thermal or power ceiling.

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