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Green circuit board with black memory chips and gold edge connector

A-Tech

A-Tech 4GB DDR2 800 PC2-6400 SODIMM 200-Pin Mac Memory Upgrade

SKU CH-K5D2-CH2MJ

4GB DDR2 800 SODIMM memory upgrade for compatible 2008 iMac and 2009 MacBook models

  • Total capacity4 GB
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 4GB module expands capacity for demanding multitasking
  • DDR2 800 MHz speed accelerates data transfer rates
  • 200-pin SO-DIMM fits MacBook and iMac slots
  • Non-ECC unbuffered design ensures Apple system compatibility
  • Major-brand chips deliver tested reliability standards

Target Mac Models

This 4GB DDR2 800 SODIMM is built for the 13-inch MacBook (Mid 2009) and the 20-inch or 24-inch iMac (Early 2008). It matches Apple order numbers MB323LL/A, MB324LL/A, MB325LL/A, MB398LL/A and MC240LL/A and model IDs iMac8,1 and MacBook5,2.

Not for Other Systems

Buyers whose Macs need a different DDR generation, a higher speed rating, or an ECC registered module cannot use this stick. The 200-pin SO-DIMM form factor also prevents installation in desktops that require 240-pin DIMMs or in newer Macs that use soldered memory.

Decisive Spec

The module runs at DDR2 800 (PC2-6400) with 1.80V unbuffered non-ECC 2Rx8 chips. If your Mac specifies this exact speed and voltage, the upgrade will work; if it calls for any other DDR standard or voltage, the part is incompatible.

How it compares

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

Price $78.99
Cheaper than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $19.75 per GB
Pricier than about 65% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR2 Apple Mac RAM Memory Upgrades
Total capacity4 GB
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

Will this 4 GB DDR2 800 module work with the original 1 GB or 2 GB sticks already in my MacBook5,2 or iMac8,1?

It is a 200-pin SODIMM running at 1.80 V, matching the factory specification for those models, so it installs alongside existing modules without voltage or keying conflicts.

How can I confirm the module is running at the correct 800 MHz speed after installation?

Open About This Mac or System Profiler; the memory tab will show the new stick listed as PC2-6400 DDR2 800 MHz with a 2Rx8 rank.

What comes in the package and is anything else required for installation?

The box contains one 4 GB DDR2 800 SODIMM module; no brackets, cables or tools are included and none are needed for the MacBook or iMac slots.

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