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Two green DDR3 ECC UDIMM sticks without heat spreaders

A-Tech

A-Tech 16GB Kit (2x8GB) DDR3 1866/1867MHz PC3-14900 ECC UDIMM 240-Pin Mac Pro Late 2013 memory upgrade

SKU CH-74AH-DCSQD

16 GB dual-module DDR3 ECC UDIMM kit at 1866 MHz for Mac Pro Late 2013

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Compatible systemsApple Mac Systems
  • 16 GB kit doubles capacity for demanding workloads
  • ECC unbuffered design protects data integrity in critical tasks
  • DDR3 1866/1867 MHz matches Mac Pro Late 2013 specs exactly
  • 240-pin UDIMM form factor installs directly into cylinder Mac Pro
  • Qualified for MacPro6,1 with Xeon E5-1620v2, E5-1650v2, E5-1680v2, E5-2697v2 CPUs

Designed for Mac Pro (Late 2013) cylinder

This 16GB kit contains two 8GB DDR3 ECC UDIMM modules that run at 1866/1867MHz PC3-14900 and 1.50V. It matches Apple order numbers ME253LL/A, MD878LL/A, MQGG2LL/A and model ID MacPro6,1 (A1481 EMC 2630).

Suits owners of the Late 2013 Mac Pro who need ECC

Builders who need registered DIMMs, non-ECC modules, a different pin count, or a memory generation other than DDR3 cannot use this kit. It is validated only for the cylinder Mac Pro with the listed Xeon processors.

240-pin DDR3 ECC UDIMM form factor decides fit

The modules are unbuffered ECC UDIMMs on a 240-pin interface at 1.50V. If your system requires a different form factor, voltage, or ECC type, this memory will not install or function.

How it compares

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

Price $96.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.06 per GB
Cheaper than about 65% 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 capacity16 GB (2 × 8 GB)
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How do I install the 240-pin DDR3 ECC UDIMM modules in the Mac Pro Late 2013, and which step is commonly missed?

Power down, open the side panel, release the memory tray latch, insert each 8 GB module firmly until the ejectors click, then reseat the tray and close the case; the step often missed is fully seating both modules before locking the tray back in place.

What maintenance or replacement will this 16 GB DDR3 1866 MHz ECC kit need over time?

No routine maintenance is required; the modules are solid-state and covered by a lifetime warranty, so replacement would only be necessary if a module fails or you later upgrade to a higher capacity.

What is the first limit that appears under sustained heavy workloads with this 1.50 V DDR3 1866 MHz memory?

The memory controller on the supported Xeon E5-1620 v2, E5-1650 v2, E5-1680 v2 and E5-2697 v2 CPUs caps the data rate at 1866 MHz, so bandwidth ceiling is reached before thermal or voltage limits.

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