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Version: 2.0.0Built Date: 02/09/2026

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About this product

OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible With iMac 21.5" and 27" (October/2009) Product Specs: Technology: DDR3 SDRAM Density: 4GB (4096MB) RoHS: Yes Pin Count: 204-pin Op. Temp.: 0C to +85C Data Rate: DDR3-1066 Speed: PC3-8500 CL: CL = 7 Cycle Time: 1.875ns Voltage: 1.5V ECC: Non ECC Module Ranks: Dual Rank Register: Non Parity Low Noise 8-Layer PCB Meets and/or Exceeds Specifications Fully compliant with JEDEC specifications Individually OWC MaxRAM Memory Certified for 6GB MacBook/MacBook Pro compatibility Lifetime OWC Limited Warranty
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OWC 16GB RAM Upgrade for iMac

Enhance your iMac's performance with the OWC 16GB (4x4GB) PC3-8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade. Designed specifically for the 21.5 and 27-inch models from October 2009, this upgrade provides a seamless boost in speed and efficiency.

With four 4GB modules, you’ll experience faster multitasking and improved application performance. Installation is straightforward, making it perfect for both tech enthusiasts and casual users. Say goodbye to lag and hello to a smoother computing experience with OWC's reliable memory solution!

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OWC - 16GB (4x4GB) PC3-8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with iMac 21.5 and 27 October/2009
Bestbuy.comBy Bestbuy.com
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OWC

OWC - 16GB (4x4GB) PC3-8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with iMac 21.5 and 27 October/2009

$81.87
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