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Two green 204-pin DDR3 SO-DIMM modules with black chips

Mushkin Enhanced

Mushkin Enhanced 976647A 8GB (2 x 4GB) DDR3 1333 SO-DIMM memory upgrade

SKU CH-P1WC-KR951 MPN 976647A

8GB DDR3 1333 SO-DIMM kit for iMac models MC508LL/A, MC509LL/A, MC510LL/A and MC511LL/A

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • Rated voltage1.5 V
  • Product type204-Pin DDR3 SO-DIMM
  • Compatible withiMac Models: MC510LL/A, MC511LL/A, MC508LL/A, MC509LL/A
  • Key featuresDesigned to work with your Apple Computer supporting DDR3-13
  • 8 GB kit (2 × 4 GB) expands multitasking headroom
  • DDR3 1333 PC3 10600 matches factory speed
  • 5 V standard voltage keeps power draw low
  • 204-pin SO-DIMM form factor fits listed iMacs
  • Validated for iMac MC510 MC511 MC508 MC509

Apple iMac DDR3 1333 SO-DIMM kit

This Mushkin Enhanced 976647A kit provides 8GB of DDR3 memory in two 4GB modules. The 204-pin SO-DIMMs run at 1333 MT/s (PC3 10600) with a 1.5V operating voltage. The package is built for the iMac models MC510LL/A, MC511LL/A, MC508LL/A and MC509LL/A.

Buyers with those specific iMacs

Owners of the listed Summer 2010 iMacs can use this kit to reach 8GB total capacity. The modules are not for computers that need a different pin count, a different voltage, or a different DDR generation. They also do not suit systems that require registered or ECC memory.

The exact iMac model number

Compatibility is limited to the four model numbers MC510LL/A, MC511LL/A, MC508LL/A and MC509LL/A. The manufacturer directs users upgrading Summer 2010 and newer iMacs to a different part number. Verify your iMac model identifier before ordering.

How it compares

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

Price $41.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% 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 nameMushkin Enhanced
Model name976647A
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Power
Rated voltage1.5 V
Size & build
Shipping weight0.05 kg
Package size150 × 114 × 8 mm
Compatibility
Compatible withiMac Models: MC510LL/A, MC511LL/A, MC508LL/A, MC509LL/A

Questions about this item

How do I verify the 8GB (2 x 4GB) DDR3 1333 kit is running correctly after installing it in my iMac?

Open About This Mac to confirm 8GB total memory at 1333 MHz, then run Apple Diagnostics or a memory test utility to check for errors across both 4GB modules.

What comes in the box with the 976647A kit and is anything else required for installation?

The package contains two 204-pin SO-DIMM modules totalling 8GB; no extra tools or parts are needed for the user-accessible memory slots on the listed iMac models.

Which Mushkin DDR3 1333 kit should I choose for a Summer 2010 iMac versus an earlier model?

Use this 976647A kit for iMac models MC508LL/A, MC509LL/A, MC510LL/A and MC511LL/A; for Summer 2010 and newer iMacs select manufacturer item 20-226-244 instead.

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