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Four green DDR3 SODIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM10246410600SODRH 32GB (4x8GB) DDR3 1333MHz SODIMM memory upgrade

SKU CH-PY4Z-P2TG8

Four 8 GB DDR3 1333 MHz SODIMM modules totalling 32 GB for the 21.5-inch iMac with 2.8 GHz Core i7 (A1311)

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 32 GB total capacity across four 8 GB modules
  • DDR3 1333 MHz speed rated at PC3-10600
  • CL9 latency with 9-9-9 timing at 1.5 V
  • 204-pin SODIMM form factor for compatible 21.5" iMac (A1311)
  • Unbuffered non-ECC design using major-brand chipset

32GB DDR3 SO-DIMM kit for Apple iMac A1311

This 32 GB kit contains four 8 GB DDR3 1333 MHz SO-DIMM modules built to the PC3-10600 standard. The unbuffered non-ECC memory runs at 1.5 V with CL9 9-9-9 timings and uses 204-pin connectors. It is specified for the Apple iMac 21.5 inch Intel Core i7 2.8 GHz model A1311.

Fits four SO-DIMM slots in the target iMac

The kit populates all four memory sockets of the compatible iMac, delivering the maximum 32 GB capacity that the system accepts. No heat spreaders are fitted, so the low-profile modules clear the tight internal space of the all-in-one chassis. Installation requires no additional components beyond the factory memory slots.

Sustained throughput at rated JEDEC speeds

Under continuous load the modules operate at their rated 1333 MHz frequency and 1.5 V without overclocking headroom. The CL9 latency and 2Rx8 organisation provide stable bandwidth for long rendering or virtualisation sessions. Builders needing ECC error correction or higher DDR generations must choose a different product.

How it compares

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

Price $96.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $3.03 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 capacity32 GB (4 × 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 systemsApple½ Imac 21.5 in Intel Core I7 2.8 GHz (A1311)
In the box
Included items4 Memory RAM Sticks

Questions about this item

What is the maximum total memory capacity this 32GB kit will bring the iMac 21.5" A1311 to?

The kit provides 32GB total across four 8GB modules, matching the 32GB maximum memory limit for the iMac 21.5" Intel Core i7 2.8GHz A1311.

How much power does each 8GB module draw at the rated 1.5V voltage?

Each DDR3 SODIMM operates at 1.5V; typical power draw for an 8GB 1333MHz module at this voltage is low and well within the iMac's SO-DIMM slot limits.

Does the iMac 21.5" A1311 require any specific memory configuration for all four slots to be recognised?

The iMac 21.5" A1311 has four SO-DIMM slots and supports 8GB modules in each slot; this 4x8GB kit fills all slots for the full 32GB capacity.

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