Updated: 16 Feb 2025

ram ddr4 4gbs 1066

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Updated: 16 Feb 2025

#1

Best Choice
OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with iMac 21.5" and 27" October/2009 (OWC8566DDR3S16S)

9.8

OWC

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Main highlights

OWC 16.0GB UPGRADE: Consists of FOUR 4GB DDR3 1066MHz PC3-8500 CL7 SO-DIMMs 1.5V 204-pin Memory Module Compatible with Mac and PC

COMPATIBLE WITH: Mac systems: iMac 27-inch (Late 2009 Model ID: iMac10,1 and iMac11,1) iMac 21.5-inch (Late 2009 Model ID: iMac10,1)

100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed All MAC Specifications for iMac and PC Laptops
#2

Value for Money
A-Tech 4GB (2 x 2GB) DDR3 1066MHz PC3-8500 Desktop RAM Kit | Non-ECC Unbuffered DIMM 1.5V 240-Pin Memory Upgrade Modules

9.7

A-Tech

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Main highlights

Genuine A-Tech Brand | Backed By A-Tech's Lifetime Warranty | Free United States Based Technical Support

Designed For Easy Installation And Maximum Compatibility With Select DDR3 Desktop PC Computers

4GB DDR3 Desktop Memory RAM Kit | 2 Sticks of 2GB DDR3 1066MHz PC3-8500 / (PC3-8500U) | Non ECC Unbuffered DIMM (Non ECC UDIMM) | 240-pin | 1.5V
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#3
8GB Kit (2X4GB) DDR3 1066 PC3 8500U 4GB DDR3 8500 Dimm 2Rx8 240-pin CL7 1.5V Desktop RAM Memory Module

9.5

D DUOMEIQI

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Main highlights

Notice：PC3-8500, Unbuffered, Dual Rank, Non ECC, 1.5V CL7, for AMD, Intel system.

Advanced Quality： DDR3 RAM are from Micron, Kingston, ELPIDA, Nanya…

8GB DDR3 Ram, 100% tested for stability, durability and compatibility.
#4
A-Tech 8GB (2 x 4GB) DDR3 1066MHz PC3-8500 Desktop RAM Kit | Non-ECC Unbuffered DIMM 1.5V 240-Pin Memory Upgrade Modules

9.4

A-Tech

-14%

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Main highlights

Genuine A-Tech Brand | Backed By A Lifetime Warranty | Free United States Based Technical Support

Designed For Easy Installation And Maximum Compatibility With Select DDR3 Desktop PC Computers

8GB DDR3 Desktop Memory RAM Kit | 2 Sticks of 4GB DDR3 1066MHz PC3-8500 Non ECC Unbuffered DIMM (Non ECC UDIMM) 1.5V 240-pin

-14%
#5
Crucial RAM 4GB DDR4 2400 MHz CL17 Laptop Memory CT4G4SFS824A

9.3

Crucial

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Main highlights

Install with ease; no computer skills required How-to guides available at Crucial

Improve your system's responsiveness, run apps faster and multitask with ease

Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool
#6
A-Tech 4GB DDR4 2400 MHz SODIMM PC4-19200 (PC4-2400T) CL17 Non-ECC Laptop RAM Memory Module

9.1

A-Tech

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Main highlights

Maximize your system's performance, boost loading speeds and multitask with ease

Compatible with select DDR4 Laptop, Notebook computers + Easy to install at home, no expertise required

Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase
#7
Crucial RAM 4GB DDR4 2400 MHz CL17 Desktop Memory CT4G4DFS824A Green/Black

8.9

Crucial

-12%

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Main highlights

Effortless Installation: Upgrade your Mac RAM with ease—no computer skills required! Follow step-by-step how-to guides available at Crucial for a smooth, worry-free installation

Compatibility Guaranteed: Ensure seamless compatibility with your Mac by using the Crucial System Scanner or Crucial Advisor Tool—get accurate recommendations for your specific device

Boosts System Performance: Designed to help your Mac run faster and smoother, enhancing multitasking capabilities and system responsiveness.

-12%
#8
A-Tech 4GB DDR4 3200 MHz SODIMM PC4-25600 (PC4-3200AA) CL22 Non-ECC Laptop RAM Memory Module

8.7

A-Tech

-10%

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Main highlights

Maximize your system's performance, boost loading speeds and multitask with ease

Compatible with select Laptop computers + Easy to install at home, no expertise required

Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase

-10%
#9
Patriot Memory Signature DDR4 8GB (2x4GB) 2666MHz (PC4-21300) Dual Channel Memory Kit PSD48G2666K

8.6

Patriot Memory

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Main highlights

Frequency: 2666MHz (PC4-21300), Timings: 19-19-19-43, Voltage: 1.2V

8GB (2x4GB) 288-Pin unbuffered dual in-line memory module (DIMM) kit

100% Tested
#10
A-Tech 4GB DDR4 2133 MHz SODIMM PC4-17000 (PC4-2133P) CL15 Non-ECC Laptop RAM Memory Module

8.3

A-Tech

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Main highlights

Maximize your system's performance, boost loading speeds and multitask with ease

Compatible with select DDR4 Laptop, Notebook computers + Easy to install at home, no expertise required

Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase

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ram ddr4 4gbs 1066

OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with iMac 21.5" and 27" October/2009 (OWC8566DDR3S16S)

9.8

Main highlights

A-Tech 4GB (2 x 2GB) DDR3 1066MHz PC3-8500 Desktop RAM Kit | Non-ECC Unbuffered DIMM 1.5V 240-Pin Memory Upgrade Modules

9.7

Main highlights

8GB Kit (2X4GB) DDR3 1066 PC3 8500U 4GB DDR3 8500 Dimm 2Rx8 240-pin CL7 1.5V Desktop RAM Memory Module

9.5

Main highlights

A-Tech 8GB (2 x 4GB) DDR3 1066MHz PC3-8500 Desktop RAM Kit | Non-ECC Unbuffered DIMM 1.5V 240-Pin Memory Upgrade Modules

9.4

Main highlights

Crucial RAM 4GB DDR4 2400 MHz CL17 Laptop Memory CT4G4SFS824A

9.3

Main highlights

A-Tech 4GB DDR4 2400 MHz SODIMM PC4-19200 (PC4-2400T) CL17 Non-ECC Laptop RAM Memory Module

9.1

Main highlights

Crucial RAM 4GB DDR4 2400 MHz CL17 Desktop Memory CT4G4DFS824A Green/Black

8.9

Main highlights

A-Tech 4GB DDR4 3200 MHz SODIMM PC4-25600 (PC4-3200AA) CL22 Non-ECC Laptop RAM Memory Module

8.7

Main highlights

Patriot Memory Signature DDR4 8GB (2x4GB) 2666MHz (PC4-21300) Dual Channel Memory Kit PSD48G2666K

8.6

Main highlights

A-Tech 4GB DDR4 2133 MHz SODIMM PC4-17000 (PC4-2133P) CL15 Non-ECC Laptop RAM Memory Module

8.3

Main highlights

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