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Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR4 2400MHz CL17 SODIMM memory upgrade

SKU CH-G47P-CD34V

Two 4 GB DDR4 2400 MHz SODIMM modules totalling 8 GB, validated for the 27-inch 5K iMac with 3.5 GHz Core i5 from mid-2017

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8GB kit upgrades the 27-inch 5K iMac to 64GB maximum
  • Dual-channel 2x4GB layout doubles bandwidth on four SO-DIMM slots
  • DDR4 2400MHz CL17 timing matches factory specifications exactly
  • 2V unbuffered non-ECC modules run cool without heat spreaders
  • 260-pin SODIMM form factor drops straight into the Mid-2017 iMac

Apple iMac 27-inch 5K Mid-2017 upgrade

This DDR4 SODIMM kit is built for the Apple iMac Core i5 3.5 27-Inch 5K Mid-2017 model MNEA2LL/A. It delivers 8 GB across two 4 GB modules that match the system's 260-pin DDR4 2400 MHz specification. The unbuffered, non-ECC design meets the factory memory requirements for this all-in-one desktop.

Suitable for owners of the listed iMac

The kit fits the four-slot architecture of the compatible iMac and runs at the standard 1.2 V voltage. Builders who need ECC error correction, registered modules or a different pin count should look at other memory types. Systems outside the specified Apple model are not covered by the supplier's compatibility guarantee.

260-pin DDR4 2400 MHz SODIMM form factor

The modules use the 260-pin SO-DIMM interface required by the target iMac. CL17 timing and 2Rx8 rank organisation align with the platform's memory controller. Installing memory with a different pin layout, voltage or DDR generation will prevent the system from booting.

How it compares

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

Price $40.99
Cheaper than about 80% 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 $5.12 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512642400SO
Total capacity8 GB (2 × 4 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple iMac Core i5 3.5 27 in 5K Mid-2017 MNEA2LL/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

Is the 8GB kit with two 4GB modules the right size for my iMac, or should I look for a larger capacity?

The iMac supports up to 64GB across four slots, so this 8GB kit leaves room to add more later.

Will the 2400MHz rating actually run at that speed once installed in the Mid-2017 27-inch iMac?

The system's memory controller is designed for DDR4-2400, so the modules will operate at their rated 2400MHz.

Does the 260-pin DDR4 SO-DIMM interface limit the bandwidth compared to desktop DIMMs?

The 260-pin SO-DIMM form factor carries the same DDR4-2400 signal, so bandwidth matches the 2400MHz rating.

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