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Four green DDR3 SO-DIMM sticks on a plain background

Computer Memory Solutions

Computer Memory Solutions 16GB (4 x 4GB) DDR3 1333MHz CL7 204-Pin SO-DIMM Kit memory upgrade

SKU CH-Z7PH-3ND7C

Four 4GB DDR3 1333MHz CL7 SO-DIMM modules totalling 16GB for the 21.5-inch 2011 iMac with 2.7GHz Core i5

  • Capacity16GB (4 x 4GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • 16GB total capacity across four matched 4GB modules
  • DDR3 1333MHz CL7 timing for responsive system performance
  • 204-pin SO-DIMM form factor fits the iMac memory slots
  • Tested compatible with the 2.7GHz 21.5-inch iMac (Mid-2011)
  • Unbuffered non-ECC design at standard 1.5V operation

16GB DDR3 SO-DIMM kit for Mid-2011 iMac

This 16GB kit contains four 4GB DDR3 1333MHz SO-DIMM modules built for the Apple iMac "Core i5" 2.7 21.5-Inch (Mid-2011). It runs at 1.5V with CL7 7-7-7 timings and uses unbuffered non-ECC chips. The kit fills all four memory slots to reach the system's 16GB configuration.

Check your exact iMac model and slot count

Verify the machine is the Mid-2011 21.5-inch iMac with model identifier iMac12,1 and order number MC812LL/A. This kit provides four sticks, so all four SO-DIMM sockets must be free. The system maximum is 32GB, but this kit delivers 16GB total. Do not buy if your iMac is a different year, size, or processor.

Steady throughput from low-latency timings

CL7 7-7-7 timing reduces latency during sustained workloads such as large photo libraries, video timelines, or virtual machines. Unbuffered non-ECC operation keeps the data path direct without extra cycles. The 1.5V DDR3 modules maintain stable voltage across long sessions, avoiding throttling that can appear on higher-voltage parts.

Points forts

  • 16GB total capacity across four matched 4GB modules
  • DDR3 1333MHz CL7 timing for responsive system performance
  • 204-pin SO-DIMM form factor fits the iMac memory slots
  • Tested compatible with the 2.7GHz 21.5-inch iMac (Mid-2011)
  • Unbuffered non-ECC design at standard 1.5V operation

Caractéristiques

BrandComputer Memory Solutions
ModelCM5126410600SODRH
Capacity16GB (4 x 4GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL7
Timing7-7-7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Imac "Core I5" 2.7 21.5-Inch (Mid-2011)
Package Content4 Memory RAM Sticks

Questions sur cet article

Does the kit include four 4 GB sticks or do I need to buy additional modules?

The package contains four 4 GB DDR3 1333 MHz SO-DIMM sticks for a total of 16 GB, so no extra modules are required.

Should I choose this 16 GB kit or the 32 GB maximum the iMac supports?

This kit provides 16 GB using all four slots; the iMac can hold up to 32 GB if you later replace these with 8 GB modules.

Will the CL7 1333 MHz rating actually run at that speed in my Mid-2011 iMac?

Yes, the modules are specified at DDR3 1333 MHz CL7 and are guaranteed compatible with the 2.7 GHz 21.5-inch Mid-2011 iMac.

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