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Two green 204-pin DDR3 SO-DIMM sticks with black chips

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1333MHz SO-DIMM for iMac 21.5" MC812LE/A

SKU CH-EJ7B-2X454

An 8 GB kit of two 4 GB DDR3 SO-DIMM modules rated at 1333 MHz for compatible iMac models

  • 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 headroom with two 4GB modules
  • 1333 MHz DDR3 speed matches the iMac MC812LE/A factory specification
  • CL7 7-7-7 timings deliver low-latency response for everyday workloads
  • 5 V unbuffered SO-DIMM design installs directly into the 204-pin slots
  • Guaranteed compatibility with the 21.5-inch 2.5 GHz Core i5 iMac (MC812LE/A)

CMS 8GB DDR3 kit for iMac 21.5" MC812LE/A

This Computer Memory Solutions kit supplies 8 GB of DDR3 memory in a matched pair of 4 GB SO-DIMM modules. The 204-pin sticks run at 1333 MHz with CL7 timings and operate at 1.5 V. They are built for the Apple iMac 21.5-inch 2.5 GHz Intel Core i5 model MC812LE/A.

Not for systems needing ECC or registered modules

Buyers whose machines require error-correcting code or buffered memory cannot use this unbuffered non-ECC kit. The two-module pack also leaves two slots empty on boards that accept four SO-DIMMs, so anyone planning to reach the 32 GB platform limit will need additional kits.

Speed rated at DDR3 1333 (PC3 10600)

The modules conform to the PC3 10600 standard, delivering 1333 MHz data rates with 7-7-7 latency. This specification determines whether the memory matches the iMac's memory controller requirements.

How it compares

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

Price $34.99
Cheaper than about 83% 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 $4.37 per GB
Cheaper than about 82% of the 20,941 comparable items (median $8.19 per GB).

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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 21.5 in 2.5 GHz Intel Core I5 Mc812Le/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I buy this 8 GB kit or look for a larger capacity for my iMac 21.5-inch MC812LE/A?

Apple officially supports 16 GB in this model, so an 8 GB kit leaves room to add another 8 GB later if you need the full 16 GB.

Will the 1333 MHz rating deliver that speed inside my iMac?

The iMac’s memory controller runs at 1333 MHz, so these DDR3-10600 modules will operate at their rated 1333 MHz without down-clocking.

Does the 204-pin SO-DIMM interface limit the bandwidth I can get?

The 204-pin DDR3 SO-DIMM interface caps transfer rates at the DDR3-10600 (1333 MT/s) specification used by this kit.

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