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Four green DDR3 ECC RDIMM sticks in a row

A-Tech

A-Tech 32GB Kit (4x8GB) DDR3 1333MHz ECC RDIMM for Mac Pro 2010/2012

SKU CH-G3XS-B2GX8

32 GB kit of four 8 GB DDR3 1333 MHz ECC registered DIMMs for Mac Pro 2010 and 2012

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Compatible systemsApple Mac Systems
  • 32GB capacity across four 8GB modules enables heavy multitasking
  • DDR3 1333MHz PC3-10600 speed matches Mac Pro specifications
  • ECC registered design protects data integrity for workstation tasks
  • Certified for Mac Pro Mid 2010 and Mid 2012 6-Core and 12-Core models
  • 50V operation with major-brand chips ensures stable compatibility

Compatibility & capacity

This 32GB kit contains four 8GB DDR3 1333MHz ECC registered DIMMs built for the Mac Pro Mid 2010 and Mid 2012 with six or twelve cores. It matches Apple order numbers MD771LL/A and model identifier MacPro5,1.

Who it suits

The modules suit owners of those towers who want the full 32GB using all four slots with registered ECC memory. It is not for anyone whose Mac Pro uses a different model identifier or requires unbuffered DIMMs.

Deciding specification

The registered ECC RDIMM form factor with a 240-pin DDR3 1333MHz interface is the single spec that determines whether the memory will be accepted by the Mac Pro memory controller.

How it compares

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

Price $113.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $3.56 per GB
Cheaper than about 87% 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 capacity32 GB (4 × 8 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

How does the 32GB capacity change everyday performance on a 2010 or 2012 Mac Pro?

Filling all four slots with 8GB modules gives the maximum 32GB the firmware recognises, letting the Xeon CPUs keep large datasets in memory instead of swapping to disk.

What does the DDR3 1333 PC3-10600 rating mean for actual throughput on these Mac Pros?

The memory controller on the supported Xeons tops out at 1333 MHz, so the kit runs at its rated 10600 MB/s peak bandwidth without down-clocking.

Will the 240-pin ECC registered sticks fit the Mac Pro memory tray without adapters?

Yes, the RDIMM form factor matches the factory tray slots exactly; the modules seat directly in the four user-accessible DIMM bays.

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