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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

A-Tech

A-Tech 4GB DDR3 1866 ECC UDIMM 240-Pin Mac Pro 2013 memory upgrade

SKU CH-XD3K-7FNJG

4GB DDR3 1866 ECC UDIMM module certified for the 2013 Mac Pro cylinder

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Compatible systemsApple Mac Systems
  • Designed for Apple Mac Pro Late 2013 cylinder
  • 4GB DDR3 1866 ECC UDIMM 240-pin module
  • PC3-14900 speed with 1.50V operation
  • Compatible with MacPro6,1 and EMC 2630
  • Supports Xeon E5-1620v2 3.7GHz through E5-2697v2 2.7GHz

System-specific DDR3 ECC UDIMM for Mac Pro 2013

This 4 GB DDR3 1866 MHz ECC UDIMM is built for the Apple Mac Pro (Late 2013, cylinder) and matches the factory memory specification. It installs in the 240-pin slots and operates at 1.50 V with unbuffered ECC for error correction.

Sustained workload behaviour

The module runs at DDR3 1866/1867 MHz (PC3-14900) under continuous load while ECC detects and corrects single-bit errors without registered buffering. Major-brand chips are tested for stability so the Mac Pro maintains data integrity during long render, compute or virtualisation sessions.

Replaces or adds to original 4 GB factory modules

Use this stick to replace a failed original module or to increase total memory beyond the base configuration when the system shows memory pressure. The jump is worth it when Activity Monitor reports frequent swap usage or when ECC errors appear on existing sticks.

How it compares

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

Price $21.99
Cheaper than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.50 per GB
Cheaper than about 70% 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 capacity4 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

Does the 1.50 V DDR3 1866 module run hot or noisy under continuous load?

The unbuffered ECC UDIMM has no heat spreader and no moving parts, so it adds no fan noise and runs at standard DDR3 voltage without extra cooling.

What must the Mac Pro (Late 2013) already have for this 240-pin ECC UDIMM to work?

The cylinder Mac Pro must use a supported Xeon — 3.7 GHz E5-1620v2, 3.5 GHz E5-1650v2, 3.0 GHz E5-1680v2 or 2.7 GHz E5-2697v2 — and have a free DDR3 ECC UDIMM slot.

Can this 4 GB DDR3 1866 stick sit beside the original Apple memory in the same Mac Pro?

Yes — it matches the factory DDR3 1866/1867 MHz PC3-14900 ECC UDIMM spec, so it will interleave with the original modules in the four-slot array.

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