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Two green circuit boards with black memory chips, no heat spreader, 204-pin SODIMM form factor

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 8GB (2x4GB) DDR3 1066MHz CL7 SODIMM for iMac 27-Inch Late 2009

SKU CH-SM4B-90SGW

Two 4 GB DDR3 1066 MHz SO-DIMM modules for the 27-inch iMac from late 2009

  • Capacity8GB (2 x 4GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • 8GB kit upgrades Late 2009 iMac to 32GB maximum
  • DDR3 1066MHz CL7 timing matches factory specification
  • 204-pin SODIMM form factor fits the 27-inch iMac slots
  • Unbuffered non-ECC design works with consumer Mac architecture
  • Two 4GB modules enable dual-channel memory performance

8GB DDR3 SO-DIMM Kit for 2009 iMac

This 8GB kit contains two 4GB modules built to the DDR3 1066 MHz standard with CL7 timings. The 204-pin SO-DIMM format matches the memory slots in the specified Apple desktop. Computer Memory Solutions brands each stick with major-brand components and tests for direct compatibility with the target system. The kit delivers 8GB total capacity across the two modules.

Suits owners of the late 2009 27-inch iMac

The memory is validated for the iMac identified as MB953LL/A, iMac11,1 and A1312. Buyers whose machines accept only slower DDR3 speeds, require ECC or registered modules, or need a single 8GB stick instead of a paired kit should look at something else. Systems limited to lower maximum capacities or different pin layouts will not accept these modules.

204-pin DDR3 1066 MHz CL7 specification

The decisive figure is the DDR3 1066 MHz (PC3-8500) speed combined with CL7 latency and 1.5 V operation. Unbuffered, non-ECC, 2Rx8 organisation and the 204-pin SO-DIMM form factor must match the host platform exactly. If the target computer demands a different speed grade, voltage or pin count, this kit will not function.

商品特色

  • 8GB kit upgrades Late 2009 iMac to 32GB maximum
  • DDR3 1066MHz CL7 timing matches factory specification
  • 204-pin SODIMM form factor fits the 27-inch iMac slots
  • Unbuffered non-ECC design works with consumer Mac architecture
  • Two 4GB modules enable dual-channel memory performance

商品規格

BrandComputer Memory Solutions
ModelCM512648500SODRH
Capacity8GB (2 x 4GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Timing7-7-7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Imac "Core I5" 2.66 27-Inch (Late 2009 MB953Ll/A
Package Content2 Memory RAM Sticks

商品問答

Will the 204-pin DDR3 1066MHz CL7 modules work with the original 1066MHz RAM already in my Late 2009 iMac?

Yes, the kit matches the iMac's native PC3-8500 1066MHz specification, so it will run alongside any existing 1066MHz DDR3 SO-DIMMs without speed mismatch.

How can I confirm the iMac recognises both 4GB sticks at 1066MHz after installation?

Open About This Mac → Memory; you should see 8GB total shown as two 4GB DDR3 1066MHz modules in the two slots.

Does the package include only the two 4GB SODIMMs, or are tools or adapters also supplied?

The box contains exactly the two 4GB 204-pin DDR3 SO-DIMM sticks; no tools, brackets or adapters are included.

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