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Two green DDR3 DIMMs with silver heat spreaders, 240-pin, registered ECC

Mushkin Enhanced

Mushkin Enhanced MAR3R186DT16G24X2 32GB (2 x 16GB) DDR3 1866 memory upgrade

SKU CH-28CM-C2Z92 MPN MAR3R186DT16G24X2

32 GB DDR3 ECC registered kit (2 × 16 GB) at 1866 MHz CL13 1.5 V for Apple desktops

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR3 1866 (PC3 14900)
  • CAS latency13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Product type240-Pin DDR3 SDRAM
  • 32 GB total capacity from two 16 GB modules
  • DDR3 1866 speed rated at PC3 14900
  • CAS latency 13 for responsive timing
  • Registered ECC design for data integrity
  • Engineered in the U.S.A. since 1994

Apple desktop DDR3 registered ECC kit

This 32GB kit contains two 16GB DDR3 1866 modules built for Apple desktop systems. The 240-pin registered DIMMs run at 1.5V with CAS latency 13 and include ECC for error correction. They are designed to match Mac memory specifications without guesswork.

Suits Mac owners adding 32GB.

Buyers upgrading compatible Apple desktops gain a validated 32GB capacity with registered ECC stability. Systems that require unbuffered non-ECC DDR3 or a different pin count cannot use these modules. Laptops and non-Apple workstations should look elsewhere.

Registered ECC DDR3 1866 at 1.5V

The registered ECC design and 1.5V operation define compatibility with supported Apple desktops. DDR3 1866 speed and CAS 13 timing are fixed by the module specification. Verify your Mac model accepts registered ECC memory before purchase.

How it compares

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

Price $195.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
CAS latency 13
Lower than about 86% of the 483 comparable items (median 22).
Price per GB $6.12 per GB
Cheaper than about 64% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameMushkin Enhanced
Product lineiRam
Model nameMAR3R186DT16G24 × 2
Total capacity32 GB (2 × 16 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1866 (PC3 14900)
Memory
CAS latency13
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.5 V
Size & build
Shipping weight0.07 kg
Package size180 × 135 × 10 mm
Compatibility
Compatible withFor Apple Desktop

Questions about this item

How do I install these 240-pin DDR3 modules in my Apple desktop, and what step is commonly missed?

Power off the Mac, open the memory access door, align each module's notch with the slot key, and press firmly until the ejector clips click; the step often missed is seating both modules fully so the clips engage on both sides.

What maintenance or replacement will this 32GB registered ECC kit need over time?

No routine maintenance is required; if a module fails, replace the faulty 16GB stick with another DDR3 1866 registered ECC module of matching CAS latency and voltage.

What limit appears first when this DDR3 1866 registered memory runs under sustained load?

The 1.5V operating voltage and CAS latency 13 define the thermal and timing envelope; sustained heavy workloads will hit the module's rated speed and latency limits before any other constraint.

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