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Two green DDR3 SO-DIMM sticks, 16GB kit, 204-pin, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3-1333 SO-DIMM iMac 21.5\" 2.5GHz

SKU CH-C4AZ-45X7Z

16 GB kit of two 8 GB DDR3-1333 SO-DIMM modules for 21.5-inch iMac 2.5 GHz

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16 GB dual-channel kit doubles memory bandwidth for faster multitasking
  • DDR3-1333 CL9 timing delivers responsive performance at 1.5 V
  • 204-pin SO-DIMM form factor fits iMac 21.5-inch 2.5 GHz Intel Core i5
  • 2Rx8 organisation with major-brand chips ensures stable operation
  • Guaranteed compatibility with Apple iMac MC309LL/A and Lenovo G570 4334-xxx

iMac 21.5" 2.5 GHz memory kit

This 16 GB kit contains two 8 GB DDR3 SO-DIMM modules built to the PC3-10600 1333 MHz specification. The parts are tested for the Apple iMac 21.5 inch 2.5 GHz Intel Core i5 (MC309LL/A) and use standard 1.5 V unbuffered non-ECC chips.

Suitable for owners of the listed iMac model

Buyers who need a different capacity, a different speed grade or ECC registered modules should look elsewhere. The kit is not intended for systems that require a voltage other than 1.5 V or a pin layout other than 204-pin SO-DIMM.

204-pin DDR3 SO-DIMM at 1333 MHz

The decisive specification is the 204-pin DDR3 SO-DIMM running at PC3-10600 1333 MHz with CL9 9-9-9 timing. If the target computer calls for this exact module type the kit will fit; otherwise it will not.

How it compares

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

Price $46.99
Cheaper than about 78% 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 $2.94 per GB
Cheaper than about 90% 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 nameCM10246410600SODRH
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
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 (Mc309Ll/A)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I pick the 16 GB kit or look for a different capacity?

The kit supplies two 8 GB modules for a total of 16 GB, matching the maximum memory supported by the compatible iMac and Lenovo systems.

What does the 1333 MHz rating mean once the memory is installed?

The modules run at DDR3 1333 (PC3 10600) with CL9 timing at 1.5 V, delivering the standard bandwidth for that platform.

Will the 204-pin DDR3 SO-DIMM interface limit performance in my iMac?

The 204-pin DDR3 SO-DIMM form factor is the native interface for the listed iMac and Lenovo models, so it operates at the platform’s full supported speed.

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