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Two green DDR2 SODIMM modules, 200-pin, no heat spreader

A-Tech

A-Tech 4GB (2x2GB) DDR2 800MHz PC2-6400 SODIMM 200-Pin memory upgrade

SKU CH-PZZF-VMEFE

DDR2 800 MHz 4 GB kit (2 × 2 GB) upgrades select 2008–2009 iMac and MacBook models

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Compatible systemsApple Mac Systems
  • 4GB kit expands multitasking headroom on supported Macs
  • DDR2 800MHz PC2-6400 matches factory memory speed
  • 200-pin SODIMM form factor fits MacBook and iMac slots
  • Non-ECC unbuffered design ensures stable everyday operation
  • Tested with major-brand chips for reliable performance

4 GB DDR2 800 MHz kit for Apple MacBook and iMac

This A‑Tech kit contains two 2 GB DDR2 SO‑DIMM modules rated at 800 MHz (PC2‑6400). It is built for the MacBook (13‑inch, Mid 2009) and iMac (20‑inch and 24‑inch, Early 2008) models identified by Apple order numbers MB323LL/A, MB324LL/A, MB325LL/A, MB398LL/A and MC240LL/A.

Suited for owners of the listed Mac models needing

The modules are non‑ECC unbuffered DDR2 SO‑DIMMs, so they will not work in machines that require registered memory, ECC memory or a different pin count. Buyers with other Mac generations or non‑Apple systems should verify compatibility before ordering.

200‑pin SO‑DIMM form factor decides fit

Each module uses the 200‑pin SO‑DIMM layout specified for these Apple computers. If the target machine uses a different pin count or DDR generation, the modules will not install.

How it compares

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

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.25 per GB
Cheaper than about 73% 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 nameA-Tech
Product lineA-Tech DDR2 Apple Mac RAM Memory Upgrades
Total capacity4 GB (2 × 2 GB)
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How do I install the 200-pin DDR2 SODIMM modules in a MacBook5,2, and which step is most often done incorrectly?

Power off the MacBook, remove the battery, then open the memory door; insert each module at a 30-degree angle until the gold contacts disappear, then press down firmly until both side clips click — the step most often missed is pressing down hard enough to engage both clips.

Will the 1.80 V DDR2 800 MHz modules need any maintenance or replacement after extended use?

No routine maintenance is required; the modules have no heat spreader and no moving parts, so they either continue working or fail outright, at which point the pair would be replaced as a set.

What limit appears first when the iMac8,1 runs sustained workloads with this PC2-6400 memory?

The memory controller caps bandwidth at 800 MHz, so sustained throughput is limited to the PC2-6400 rating regardless of how long the workload runs.

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