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

By Bestbuy.com

OWC

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

Name: OWC - 16GB (4x4GB) PC3-8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with iMac 21.5 and 27 October/2009
Brand: OWC
SKU: 6c583f307bdb05fba067fae564a45514
Price: 81.87 USD
Availability: InStock

$81.87

Custom Shipping

Secure Purchase

SKU: 6c583f307bdb05fba067fae564a45514

Buy Now

Share Share

About this product

Quick Questions

Generating personalized questions...

Generated by Contenta AI

Questions and answers are generated by Contenta AI based on product information. For detailed specifications, please refer to the manufacturer's documentation.

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

OWC - 4GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell XPS 8900 8910 - Black Chips

Capacity: 4GB --- Technology: DDR4 --- Speed: PC4-17000 2133MHz CL15 --- ECC Type: Non-ECC Unbuffered --- Form Factor: 288-Pin Non-ECC DIMM (UDIMM) --- Voltage: 1.2V --- Backward Compatibility: Also compatible with DDR4 1866MHz --- System Compatibility: Dell XPS 8900, XPS 8910 --- Replacement For: Dell 061H6H, 370-ACGH, 370-ACHR, 370-ACPS, A8058283, A8423727, A8781358, SNP61H6HC/4G --- OWC DDR4 memory is Fully compliant with JEDEC specifications, ROHS compliant, providing a warranty safe upgrade. OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac or PC's full potential and speed up overall responsiveness. Become a multitasking maven when you upgrade your Mac or PC with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time. We test every OWC memory module at our in house lab so you can upgrade with the confidence that your memory is built to last. We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service. OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.

Brand: OWCCustom Shipping

$35.99

G.SKILL - Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-16GVK - Black

G.SKILL Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-16GVK

Brand: G.SKILLCustom Shipping

$186.27

AXIOM - 32GB DDR5 SDRAM Memory Module - For Server - 32 GB - DDR5-4800/PC5-38400 DDR5 SDRAM - 4800 MHz - CL40 - 1.10 V - Black

Axiom's DDR5 modules are the latest in evolutionary DRAM design. DDR5 increases effective bandwidth by 70% over DDR4. While capable of data rates reaching beyond 7200MT/s, DDR5 provides the same lasting reliability as DDR4, even with the rigorous demands of next-gen computing. Such gains can ultimately reduce the number of servers needed for the same level of system performance while providing improved stability and efficiency over previous DDR generations.

Brand: AxiomCustom Shipping

$1946.74

Crucial - Pro 32GB Kit (2x16GB) DDR4 3200MHz C22 UDIMM Desktop Memory Kit - Black

CP2K16G4DFRA32A is the Crucial 32GB kit consisting of (2) 16GB DDR4 Pro desktop modules that operate at the speed of 3200MT/s and has a CAS Latency of 22. It is a UDIMM and conforms to the industry standard DDR4 UDIMM layout of 288 pins. It is compatible with systems that can take DDR4-3200 UDIMM memory.

Brand: CrucialCustom Shipping

$318.38$361.07

12% OFF

OWC - 8GB (4x2GB) DDR3 1066 PC3-8500 CL7 1Rx8 240-pin 1.5V Non-ECC UDIMM Memory RAM Module Kit - Black Chips

Capacity: 8GB (4x2GB) --- Technology: DDR3 --- Speed: PC3-8500 1066MHz CL7 --- ECC Type: Non-ECC Unbuffered --- Form Factor: 240-Pin Non-ECC DIMM (UDIMM) --- Voltage: 1.5V --- Backward Compatibility: Also compatible with DDR3 800MHz --- Replacement For: Dell A2336921, GT494, SNPY996DC/2G; Lenovo 45J5435, 45J5435B, 46R3323, 57Y4422, 78004739 --- OWC DDR3 memory is Fully compliant with JEDEC specifications, ROHS compliant, providing a warranty safe upgrade. OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac or PC's full potential and speed up overall responsiveness. Become a multitasking maven when you upgrade your Mac or PC with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time. We test every OWC memory module at our in house lab so you can upgrade with the confidence that your memory is built to last. We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service. OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.

Brand: OWCCustom Shipping

$55.46

OWC - 8GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell Vostro 3667 - Black Chips

Capacity: 8GB --- Technology: DDR4 --- Speed: PC4-17000 2133MHz CL15 --- ECC Type: Non-ECC Unbuffered --- Form Factor: 288-Pin Non-ECC DIMM (UDIMM) --- Voltage: 1.2V --- Backward Compatibility: Also compatible with DDR4 1866MHz --- System Compatibility: Dell Vostro 3667 --- Replacement For: Dell 370-ACIB, 370-ACIT, A8058238, A8781359, SNPFN6XKC/8G --- OWC DDR4 memory is Fully compliant with JEDEC specifications, ROHS compliant, providing a warranty safe upgrade. OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac or PC's full potential and speed up overall responsiveness. Become a multitasking maven when you upgrade your Mac or PC with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time. We test every OWC memory module at our in house lab so you can upgrade with the confidence that your memory is built to last. We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service. OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.

Brand: OWCCustom Shipping

$65.99

Synology - 16GB DDR4 SDRAM Memory Module - For NAS Server - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - Unbuffered - Black

Upgrade the memory in select Synology NAS units using the 16GB DDR4 2666 MHz UDIMM Memory Module from Synology. This single RAM module features a capacity of 16GB, a clock speed of 2666 MHz (PC4-21300), and a 288-pin DIMM form factor. It operates using 1.2V, features Error-Correcting Code (ECC) technology, and is unbuffered. This memory module is protected by a limited 5-year warranty.

Brand: SynologyCustom Shipping

$1222.04

Skytech Gaming - Skytech CRYSTAL - AMD Ryzen 5 5500, 5050 8GB, 16GB 3200 MHz DDR4 SDRAM, 650W GOLD PSU - Black

Skytech Gaming Crystal Gaming PC, AMD Ryzen 5 5500 3.6GHz, NVIDIA RTX 5050 8GB VRAM, 1TB NVMe SSD, 16GB DDR4 RAM 3200, 650W GOLD PSU, Wi-Fi, Win 11, Desktop

Brand: Skytech GamingCustom Shipping

$979.99$1175.99

17% OFF

August 8, 2025

Home Improvements That Can Boost Your Home’s Value

Thinking about selling, or just want to make your home worth a little more? Some updates can give you a surprisingly big return — and they don’t all have to break the bank. Here are a few smart ways to make your property more appealing (and potentially more profitable).

By Ash Jacob

October 8, 2025

Helly Hansen Launches Exclusive 40% Discount Code for Early Shoppers

Helly Hansen offers 40% off with code FFPRO25BWK3CCZ at hellyhansen.com and hhworkwear.com until October 14, 2025. Don’t miss this limited-time deal.

By Willie Redmond

July 30, 2025

The iPhone 17 Pro might be oh so orange!

New iPhone 17 Pro and Pro Max dummy units revealed in bold orange by leaker Sonny Dickson. Get a closer look and compare with the earlier iPhone 17 Air design leak.

By Willie Redmond

December 25, 2025

iPhone Fold Dummy Suggests Apple Is Rethinking the Future of Smartphones

A leaked iPhone Fold dummy reveals Apple’s radical foldable phone design, featuring a square shape and a tablet-like display when unfolded.

By Willie Redmond

View All Articles

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

About this product

You might also like

OWC - 4GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell XPS 8900 8910 - Black Chips

G.SKILL - Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-16GVK - Black

AXIOM - 32GB DDR5 SDRAM Memory Module - For Server - 32 GB - DDR5-4800/PC5-38400 DDR5 SDRAM - 4800 MHz - CL40 - 1.10 V - Black

Crucial - Pro 32GB Kit (2x16GB) DDR4 3200MHz C22 UDIMM Desktop Memory Kit - Black

OWC - 8GB (4x2GB) DDR3 1066 PC3-8500 CL7 1Rx8 240-pin 1.5V Non-ECC UDIMM Memory RAM Module Kit - Black Chips

OWC - 8GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell Vostro 3667 - Black Chips

Synology - 16GB DDR4 SDRAM Memory Module - For NAS Server - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - Unbuffered - Black

Skytech Gaming - Skytech CRYSTAL - AMD Ryzen 5 5500, 5050 8GB, 16GB 3200 MHz DDR4 SDRAM, 650W GOLD PSU - Black

Home Improvements That Can Boost Your Home’s Value

Helly Hansen Launches Exclusive 40% Discount Code for Early Shoppers

The iPhone 17 Pro might be oh so orange!

iPhone Fold Dummy Suggests Apple Is Rethinking the Future of Smartphones

You might also like

OWC - 4GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell XPS 8900 8910 - Black Chips

G.SKILL - Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-16GVK - Black

AXIOM - 32GB DDR5 SDRAM Memory Module - For Server - 32 GB - DDR5-4800/PC5-38400 DDR5 SDRAM - 4800 MHz - CL40 - 1.10 V - Black

Crucial - Pro 32GB Kit (2x16GB) DDR4 3200MHz C22 UDIMM Desktop Memory Kit - Black

OWC - 8GB (4x2GB) DDR3 1066 PC3-8500 CL7 1Rx8 240-pin 1.5V Non-ECC UDIMM Memory RAM Module Kit - Black Chips

OWC - 8GB DDR4 2133MHz PC4-17000 CL15 1.2V 288pin Non-ECC UDIMM Memory RAM Compatible with Dell Vostro 3667 - Black Chips

Synology - 16GB DDR4 SDRAM Memory Module - For NAS Server - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - Unbuffered - Black

Skytech Gaming - Skytech CRYSTAL - AMD Ryzen 5 5500, 5050 8GB, 16GB 3200 MHz DDR4 SDRAM, 650W GOLD PSU - Black

Home Improvements That Can Boost Your Home’s Value

Helly Hansen Launches Exclusive 40% Discount Code for Early Shoppers

The iPhone 17 Pro might be oh so orange!

iPhone Fold Dummy Suggests Apple Is Rethinking the Future of Smartphones

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

About this product

OWC 16GB RAM Upgrade for iMac

Key Features: