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

A-Tech

A-Tech 32GB Kit (4x8GB) DDR3 1066MHz PC3-8500 SODIMM 204-Pin Memory Upgrade for Apple iMac (Late 2009)

SKU CH-YXB6-XYDQY

A 32 GB DDR3 SODIMM kit with four 8 GB modules running at 1066 MHz for the 27‑inch iMac (Late 2009)

  • Capacity32GB (4 x 8GB)
  • SpeedDDR3 1066 (PC3 8500)
  • Voltage1.50V
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • Rank2Rx8
  • 32 GB kit (4 × 8 GB modules) expands multitasking headroom
  • DDR3 1066 MHz PC3-8500 matches iMac Late 2009 spec
  • 204-pin SODIMM form factor fits the 27-inch iMac slots
  • Non-ECC unbuffered 2Rx8 design meets Apple memory requirements
  • Major-brand chips tested for reliability and lifetime warranty coverage

32GB DDR3 Kit for Late 2009 iMac

This 32GB kit contains four 8GB DDR3 1066MHz SODIMM modules built for the 27-inch iMac (Late 2009). It targets owners of model iMac11,1 (A1312, EMC 2374) who need the maximum memory capacity those systems can address. The kit matches Apple order numbers MB953LL/A and MC507LL/A.

DDR3 1066MHz PC3-8500 speed ceiling

The modules run at DDR3 1066/1067 MHz (PC3-8500) with 1.50V unbuffered non-ECC operation. The iMac's memory controller locks the bus to this frequency, so faster DDR3 modules will downclock to 1066MHz. Total bandwidth is limited by the dual-channel architecture and the 1066MHz data rate.

Four-slot installation with 2Rx8 modules

All four SODIMM slots must be populated to reach 32GB, so each 2Rx8 module sits in a dedicated channel. The 204-pin keying prevents misalignment, but the tight slot spacing inside the 2009 iMac makes finger access difficult. A common issue is modules not fully seating on first press, which causes a boot chime with no video until re-seated.

Besonderheiten

  • 32 GB kit (4 × 8 GB modules) expands multitasking headroom
  • DDR3 1066 MHz PC3-8500 matches iMac Late 2009 spec
  • 204-pin SODIMM form factor fits the 27-inch iMac slots
  • Non-ECC unbuffered 2Rx8 design meets Apple memory requirements
  • Major-brand chips tested for reliability and lifetime warranty coverage

Technische Daten

BrandA-Tech
SeriesA-Tech DDR3 Apple Mac RAM Memory Upgrades
Capacity32GB (4 x 8GB)
SpeedDDR3 1066 (PC3 8500)
Voltage1.50V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Fragen zu diesem Artikel

How do I know the 32GB (4x8GB) kit is the right capacity for my iMac?

The kit matches the 27-inch Late 2009 iMac (model A1312, EMC 2374) that accepts four SO-DIMM slots, delivering the full 32GB the system can address.

What does the 1066MHz PC3-8500 rating mean once the modules are installed?

The memory will run at 1066/1067 MHz, providing the standard PC3-8500 bandwidth the iMac's memory controller expects for normal operation.

Will the 204-pin DDR3 SO-DIMM interface work without changes in my Late 2009 iMac?

Yes, the 204-pin unbuffered non-ECC DDR3 SO-DIMMs are the exact form factor and electrical specification Apple specified for that model.

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