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Two green DDR3L SO-DIMM sticks, 204-pin, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM10246414900SODRL 16GB (2x8GB) DDR3L 1866 CL13 1.35V memory upgrade

SKU CH-CH3Y-8N8AY

16 GB (2 × 8 GB) DDR3L 1866 CL13 1.35 V SO-DIMM kit validated for the 27-inch 5K iMac (Late 2015)

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1866 (PC3L 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Memory timings13-13-13
  • Rated voltage1.35 V
  • 16 GB kit upgrades a 27-inch 5K iMac to 64 GB maximum
  • DDR3L 1866 MHz modules run at low 1.35 V voltage
  • Two 8 GB unbuffered SO-DIMMs install in the four available slots
  • CL13 13-13-13 timing keeps latency tight for everyday workloads
  • Guaranteed compatible with the Late 2015 Core i5 3.3 GHz model

Targeted iMac Upgrade

This 16 GB kit uses two 8 GB DDR3L SO-DIMM modules built for the 27 inch 5K iMac from Late 2015. It matches the factory PC3L 14900 specification and runs at 1.35 V. The kit suits owners who want the full 16 GB capacity in a two slot configuration.

Simple SO-DIMM Installation

Each stick is a 204 pin unbuffered module without a heat spreader so it slides straight into the memory door. The 2Rx8 organisation and CL13 13-13-13 timing meet the system requirements. Buyers needing registered or ECC memory cannot use this kit.

Low Voltage Operation

DDR3L at 1.35 V draws less power than standard DDR3 and generates modest heat inside the sealed enclosure. No spreader means airflow from the internal fans passes directly over the chips. The memory runs at 1866 MHz within the thermal limits of the original design.

How it compares

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

Price $37.99
Cheaper than about 81% 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 $2.37 per GB
Cheaper than about 92% 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 nameComputer Memory Solutions
Model nameCM10246414900SODRL
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
Memory timings13-13-13
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsApple Imac "Core I5 in 3.3 27 (5K, Late 2015) Mk482Ll/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does DDR3L 1866 (PC3L 14900) mean for real-world bandwidth?

The kit runs at DDR3L 1866 (PC3L 14900) with CL13 timing at 1.35V, delivering the standard DDR3L 1866 data rate for the supported iMac.

Will these 204-pin SO-DIMMs fit the four slots in my Late 2015 27-inch iMac?

Yes, each module is a 204-pin DDR3L SO-DIMM without a heat spreader, matching the four SO-DIMM slots in the iMac 27-inch (5K, Late 2015) model MK482LL/A.

What is the correct installation sequence for the two 8GB sticks?

Power off and unplug the iMac, lay it screen-down on a soft cloth, press the memory compartment button, eject the door, remove existing modules by pulling the side levers, insert the new 2Rx8 sticks until they click, replace the door, then reconnect power.

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