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Two green DDR3 SODIMM modules with black chips and gold contacts

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1333MHz CL7 SODIMM for iMac 21.5" Mid-2010 memory upgrade

SKU CH-M6TF-XNJQS

An 8 GB DDR3 kit (two 4 GB SODIMMs) running at 1333 MHz CL7, built for the 21.5-inch iMac (Mid-2010)

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8GB dual-channel kit boosts multitasking on supported iMac
  • CL7 timing at 1333MHz delivers responsive DDR3 performance
  • 204-pin SODIMM form factor fits the 21.5-inch Mid-2010 slot exactly
  • 5V unbuffered non-ECC design matches factory electrical specs
  • Two 4GB modules from a major-brand chipset ensure reliable operation

Matched kit for 21.5" iMac Mid-2010

This 8 GB kit contains two 4 GB DDR3 SO-DIMMs rated at 1333 MHz with CL7 timings and 1.5 V operation. The modules are unbuffered, non-ECC and built with major-brand chips on a 204-pin form factor. They are validated for the Apple iMac "Core i3" 3.06 21.5-inch (Mid-2010) and ship as a matched pair for dual-channel performance.

Who this suits and who it does not

Ideal for owners of the specified Mid-2010 21.5-inch iMac who want a straightforward capacity increase to 8 GB using the correct DDR3 SO-DIMM type. Not suitable for systems that require ECC or registered memory, for any other iMac screen size or year, or for platforms that use a different DDR generation or pin count.

The specification that decides fit

The decisive factor is the 204-pin DDR3 SO-DIMM interface running at 1333 MHz (PC3 10600) with CL7 latency at 1.5 V. If the target Mac calls for this exact module type, speed and voltage, the kit will install and run; if the system demands a different pin layout, voltage or DDR generation, the modules will not be compatible.

How it compares

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

Price $36.99
Cheaper than about 82% 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 $4.62 per GB
Cheaper than about 81% 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 nameCM5126410600SODRH
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Imac "Core I3 in 3.06 21.5 in (Mid-2010)
In the box
Included items2 Memory RAM Sticks

Questions about this item

How can I verify the kit is running at the rated 1333 MHz CL7 after installing it in my iMac?

Open About This Mac → System Report → Memory and confirm each slot shows 4 GB DDR3 at 1333 MHz; the CAS latency will be reported as 7-7-7 timing.

What exactly ships in the box and is anything else required for the upgrade?

The package contains two 4 GB 204-pin DDR3 SO-DIMM modules; no extra tools or parts are needed for the Mid-2010 iMac memory slots.

Which capacity kit should I choose if my iMac 21.5-inch Mid-2010 currently has 4 GB installed?

This 8 GB (2 × 4 GB) kit replaces the existing pair and matches the model MC508LL/A specification for a full 8 GB upgrade.

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