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Two green DDR3L SO-DIMM sticks with gold contacts

Crucial

Crucial CT2K4G3S186DJM 8GB (2×4GB) DDR3L 1866 SO-DIMM 204-pin memory upgrade

SKU CH-A4KG-E03VT MPN CT2K4G3S186DJM

Two 4 GB DDR3L SO-DIMM modules running at 1866 MHz with CL13 latency and 1.35 V operation for 2015 iMac compatibility

  • DDR3L runs at 1.35 V for lower power draw
  • 1866 MHz speed with CL13 latency for responsive performance
  • Dual 4 GB modules give 8 GB total capacity
  • 204-pin SO-DIMM fits 2015 iMac and compatible laptops
  • RoHS, WEEE, REACH certified with lifetime warranty

Mac-ready 8 GB DDR3L kit

This 8 GB kit supplies two 4 GB SO-DIMM modules built to the DDR3L-1866 standard. It targets owners of the 2015 iMac who need a straightforward capacity increase without altering the original voltage profile. The unbuffered, non-ECC design matches the factory memory layout for direct replacement.

Dual-voltage profile eases installation

Each module operates at either 1.35 V or 1.5 V, so the memory automatically adapts to the system’s memory controller settings. No BIOS adjustment or manual voltage selection is required. The CL13 latency and PC3-14900 rating preserve the timing characteristics Apple specified for that platform.

204-pin SO-DIMM fits factory slots

The standard 204-pin edge connector aligns with the iMac’s user-accessible memory compartment, allowing tool-free installation. RoHS, WEEE, REACH and Green Dot certifications confirm compliance with current substance restrictions. A lifetime limited warranty covers the modules for as long as the original purchaser owns them.

How it compares

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

Price $53.99
Cheaper than about 77% of the 21,161 comparable items (median $397.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the dual-voltage 1.35V/1.5V modules need any firmware or voltage adjustment later?

The modules run at 1.35 V or 1.5 V automatically; no firmware updates or manual voltage changes are required during their service life.

What thermal or speed limit appears first when the CL13 1866 MHz sticks run continuously?

The rated 1866 MHz speed and CL13 latency are sustained limits; the modules do not throttle below these specifications under normal operating temperatures.

How much heat and fan noise do the unbuffered 1.35V SO-DIMMs add during all-day workloads?

Low-voltage DDR3L operation at 1.35 V keeps heat output minimal, so system fans typically stay at idle speeds even during extended use.

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