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Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3L 1600 CL11 1.35V iMac 27 2015

SKU CH-P8E6-0WJ0F

8GB DDR3L 1600 kit (2×4 GB, CL11, 1.35 V) validated for 2015 27-inch iMac Retina 5K

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 8GB dual-channel kit boosts multitasking on 27-inch 2015 iMac
  • 35 V DDR3L modules run cooler than standard 1.5 V DDR3
  • CL11 1600 MHz timing matches factory specification exactly
  • 204-pin SO-DIMM form factor fits the four memory slots directly
  • Computer Memory Solutions tests each stick for guaranteed Mac compatibility

System-specific DDR3L kit for 27-inch iMac 2015

This 8 GB kit contains two 4 GB SO-DIMMs built to the DDR3L 1600 standard with CL11 timing and 1.35 V operation. It targets owners of the Mid 2015 Retina 5K iMac (MF886LL/A) who want a matched pair for the factory slots. The modules are unbuffered, non-ECC and use a major-brand chipset for reliable operation.

Matched pair eliminates mixed-module uncertainty

Supplied as a 2-piece kit, the sticks share identical speed, latency and voltage ratings so the memory controller sees a uniform configuration. This removes the timing mismatches that can occur when adding a single module to an existing stick of different origin. The package includes only the two SO-DIMMs; no tools or software are bundled.

204-pin SO-DIMM form factor fits the iMac's

Each module uses the standard 204-pin DDR3 SO-DIMM edge connector with no heat spreader, keeping the profile low enough for the tight SO-DIMM bays in the 27-inch chassis. The system provides four sockets with a 32 GB ceiling, so this 8 GB kit leaves room for future expansion. Buyers needing more than 32 GB total or requiring registered ECC modules should look elsewhere.

How it compares

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

Price $73.99
Cheaper than about 72% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $9.25 per GB
Typical for this category: the median of 20,941 items is $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 nameCM5126412800SOSRL
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsApple iMac Retina 5K 27 in (Mid 2015) MF886LL/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 1Rx8 DDR3L modules ever need replacement under normal desktop use?

The 1.35 V DDR3L 1600 sticks carry a limited lifetime warranty from Computer Memory Solutions, so they are not expected to require scheduled replacement.

What limit appears first when the iMac 27-inch Mid 2015 runs sustained loads with this 8 GB kit?

The 8 GB total capacity (2 × 4 GB) will fill before the CL11 DDR3L 1600 speed becomes a bottleneck on the MF886LL/A.

How much heat and power do the unbuffered 1.35 V SO-DIMMs add during all-day operation?

At 1.35 V the DDR3L modules draw less power and generate less heat than standard 1.5 V DDR3, keeping thermal load low in the 27-inch 2015 iMac.

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