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RAM for Apple Mac Pro (Early 2009) (A1289)

Model Years: 2009–2010

Max RAM: 48GBRAM Slots: 8RAM Type: DDR3 PC3-10600 ECC 1333MHz
✓ RAM Upgradeable

Quick answer

Our data matches the Apple Mac Pro (Early 2009) (A1289) with OWC 8GB DDR3 1333MHz RDIMM (DDR3 PC3-10600 ECC, DIMM, 1333MHz, 8GB); OWC 4GB DDR3 1333MHz RDIMM (DDR3 PC3-10600 ECC, DIMM, 1333MHz, 4GB).

Supported memory profile: DDR3 PC3-10600 ECC, DIMM, 1333MHz, up to 48GB max, 8 slots.

Before buying, confirm your exact model number, memory generation, form factor (DIMM), speed, and maximum supported capacity. Live eBay listings are shown below and may change.

Compatible RAM for the Apple Mac Pro (Early 2009)

Listings and prices are pulled from eBay and may change. Always verify compatibility before purchase. Listings are updated daily.

Frequently Asked Questions

What RAM fits the Apple Mac Pro (Early 2009) (A1289)?

Based on our compatibility data, the Apple Mac Pro (Early 2009) (A1289) supports DDR3 PC3-10600 ECC, DIMM, 1333MHz, up to 48GB max, 8 slots. Matched modules include OWC 8GB DDR3 1333MHz RDIMM (DDR3 PC3-10600 ECC, DIMM, 1333MHz, 8GB); OWC 4GB DDR3 1333MHz RDIMM (DDR3 PC3-10600 ECC, DIMM, 1333MHz, 4GB). Always confirm your exact model number before purchasing.

How do I verify RAM compatibility?

Check that your device label or manual shows A1289 (or Mac Pro (Early 2009)). Confirm memory generation, form factor (DIMM), speed, slot count, and maximum supported capacity match the specs on this page before ordering.

Can I mix RAM speeds or capacities?

Many systems run best with matched pairs (same capacity and speed). Mixing capacities or speeds may work but can force lower speeds or single-channel mode — check your OEM documentation.

Are these listings live and current?

Current eBay listings for compatible RAM modules are shown below. Prices and availability change frequently — verify listing details and seller ratings before you buy.

RAM Upgrade Guide for the Apple Mac Pro (Early 2009)

This device uses DDR3 PC3-10600 ECC at 1333MHz. Maximum supported capacity is 48GB.

Always power off and unplug your device before installing RAM. Ground yourself to avoid static discharge.