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Eight green DDR3 ECC RDIMM modules with gold contacts

A-Tech

A-Tech 32GB (8x4GB) DDR3 1333 ECC RDIMM 240-Pin Mac Pro 2010/2012 12-Core Memory Upgrade

SKU CH-KAH9-4BHWG

Eight 4 GB DDR3 1333 ECC registered DIMMs add 32 GB to 12-core Mac Pro models from 2010 and 2012

  • Total capacity32 GB (8 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Compatible systemsApple Mac Systems
  • 32 GB capacity across eight 4 GB modules enables heavy multitasking
  • DDR3 1333 MHz PC3-10600 speed matches Mac Pro 2010 and 2012 specs
  • ECC registered design protects data integrity for workstation workloads
  • Lifetime warranty and US-based tech support back every kit
  • Validated for Mac Pro 5,1 with Xeon 2.4, 2.66, 2.93 and 3.06 GHz CPUs

Apple Mac Pro 12-Core Memory Kit

This 32GB kit contains eight 4GB DDR3 1333 ECC registered DIMMs built for the 12-core Mac Pro models released in 2010 and 2012. Each module runs at 1.50V and uses a 240-pin RDIMM form factor with major-brand chips. The kit matches Apple order number MD771LL/A and model ID MacPro5,1.

Suits owners of mid-2010 or mid-2012 12-core towers

The memory is validated for Xeon processors including the 2.4GHz E5645, 2.66GHz and 2.93GHz X5650 and X5670, and 3.06GHz X5675. It will not fit earlier Mac Pro models, later cylinder Mac Pro units, or any non-Apple workstation that requires unbuffered DIMMs or a different DDR generation.

Eight slots filled with 4GB modules

The 32GB total provides headroom for virtual machines, large media projects and multi-application workflows on supported 12-core systems. Capacity stops at 32GB because all eight DIMM slots are occupied; users needing more memory must replace modules rather than add to the kit.

How it compares

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

Price $178.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (8 × 4 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $5.59 per GB
Cheaper than about 69% 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 capacity32 GB (8 × 4 GB)
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

Will this 32GB kit with 1333MHz ECC RDIMM modules work in my Mac Pro 5,1 that currently has 2.66GHz Xeon X5650 processors?

Yes, the kit is listed as compatible with Mac Pro 5,1 and the 2.66GHz Xeon X5650 CPU.

Can I mix these 4GB DDR3 1333 ECC RDIMM modules with my existing 2GB or 1GB DDR3 ECC RDIMM modules in the same Mac Pro?

The Mac Pro 5,1 requires identical modules in each triple-channel set; mixing capacities or ranks can prevent boot or reduce performance.

How can I confirm the full 32GB is recognised and running at 1333MHz with ECC active after installation?

Open About This Mac and System Report; the Memory section should show 32GB total, 1333MHz speed, and ECC status as Enabled for each slot.

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