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Three green DDR3 ECC UDIMM sticks with gold contacts

A-Tech

A-Tech 24GB (3x8GB) DDR3 1333MHz ECC UDIMM memory upgrade for Mac Pro 2010/2012

SKU CH-GHNQ-YH2CH

24 GB DDR3 1333 MHz ECC UDIMM kit adds memory to Mac Pro 2010 and 2012 towers

  • Total capacity24 GB (3 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Compatible systemsApple Mac Systems
  • 24 GB total capacity from three 8 GB modules for expanded multitasking
  • DDR3 1333 MHz PC3-10600 speed matches Mac Pro memory bus
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • Certified compatible with Mac Pro 2010 and 2012 6-Core and 12-Core models
  • 50 V standard voltage ensures stable operation in supported Xeon systems

Mac Pro 2010/2012 DDR3 ECC Kit

This 24GB kit (3 x 8GB) uses DDR3 1333MHz PC3-10600 ECC UDIMM modules at 1.50V. It is built for Apple Mac Pro towers from Mid 2010 and Mid 2012 with 6-Core or 12-Core Xeon processors. The unbuffered design matches the system's memory controller requirements. Each module is tested for compatibility with MacPro5,1 and order numbers MD771LL/A.

Replaces smaller factory configurations

The kit upgrades systems shipped with 6GB or 12GB of memory by filling three slots with higher-density modules. The jump is worthwhile when workloads exceed the original capacity and cause paging to storage. It suits users running virtual machines, large media libraries, or multi-application workflows on these Xeon platforms. Buyers needing more than 24GB total capacity cannot use this kit alone.

Fits Mac Pro 4-slot or 8-slot architecture

Three 240-pin UDIMMs leave remaining slots free for future expansion or allow mixed-capacity configurations. The ECC unbuffered specification ensures error correction without registered buffering overhead. It works with the listed Xeon processors including 2.4GHz, 2.66GHz, 2.93GHz, 3.06GHz and 3.33GHz models. Builders requiring registered DIMMs or non-ECC memory should select a different product.

How it compares

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

Price $163.99
Cheaper than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 24 GB (3 × 8 GB)
Lower than about 65% of the 20,941 comparable items (median 32 GB).
Price per GB $6.83 per GB
Cheaper than about 58% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR3 Apple Mac RAM Memory Upgrades
Total capacity24 GB (3 × 8 GB)
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeUnbuffered
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

Will the 240-pin ECC UDIMM modules fit the memory slots in my Mac Pro 5,1?

Yes, the 240-pin DDR3 ECC UDIMM form factor matches the Mac Pro 5,1 memory slots exactly.

Do I need to install the three 8GB modules in specific slots for the Mac Pro 2010/2012?

Populate the three modules in one processor tray's slots (e.g., DIMM 1, 2, 3) for triple-channel operation; leaving gaps or splitting across trays reduces bandwidth.

If a module fails years later, can I replace just one 8GB stick or must I replace the full 24GB kit?

Each 8GB module is individually tested and covered by the lifetime warranty, so a single stick can be replaced without returning the full kit.

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