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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

  • Capacity4GB
  • SpeedDDR3 1866 (PC3 14900)
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor Brand Chipset
  • 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.

Highlights

  • 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

Specifications

BrandA-Tech
SeriesA-Tech DDR3 Apple Mac RAM Memory Upgrades
Capacity4GB
SpeedDDR3 1866 (PC3 14900)
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

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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