$(csi.user.businessName)

Main Content

Loading...

Skip to content Go to Product Search

Visit our Support Center
Check your Order Status
Shipping, Delivery & Store Pickup
Returns & Exchanges
Price Match Guarantee

Order & Purchases

Check Order Status
Shipping, Delivery & Pickup
Returns & Exchanges
Price Match Guarantee
Product Recalls
Trade-In Program
Gift Cards

Payment Options

My Best Buy® Credit Card
Pay Your Bill at Citibank
Lease to Own
Buy Now, Pay Later
Best Buy Business Financing

Support & Services

Visit our Support Center
Schedule a Service
Manage an Appointment
Protection & Support Plans
Haul Away & Recycling
Contact Us

Rewards & Membership

My Best Buy Memberships
View Points & Certificates
Member Offers

Partnerships

Sell on Best Buy Marketplace
Advertise with Us
Affiliates: Creators & Publishers
Best Buy Health
Best Buy Education
Best Buy Business
Partner+

About Best Buy

Corporate Information
Careers
Corporate Responsibility
Sustainability

Sign in or Create Account

Get the latest deals and more.

Email Address

Best Buy appLearn more ›

Best Buy Canada

Accessibility Terms & Conditions Privacy Interest-Based Ads State Privacy Rights Health Data Privacy Do Not Sell/Share My Personal Information Limit Use of My Sensitive Personal Information Targeted Advertising Opt Out CA Supply Chain Transparency Act

In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.

Best Buy Gamers

Deal of the Day

My Best Buy Memberships

Best Buy Business

ddr4 ram 2666 search results

Filters

Skip To Results

Get it fast

Pickup · Ready todaySelect Store

Shipping · Get it today55423

Sold & shipped by

Best Buy

Category

Computer Cards & Components

Computer Memory (RAM)

Memory Capacity (Total)

2 GB

4 GB

8 GB

16 GB

32 GB

64 GB

128 GB

256 GB

Memory Speed

3600 megahertz

3200 megahertz

2666 megahertz

2400 megahertz

Form Factor

Desktop

Laptop

Server

Memory Capacity (Per Module)

4 GB

8 GB

16 GB

32 GB

Memory Type

DDR4

DDR4 SDRAM

Memory Channel

Single

Dual

Quad

Price

to

$25 - $49.99

$50 - $74.99

$75 - $99.99

$100 - $149.99

$150 - $199.99

$200 - $249.99

$250 - $499.99

$500 - $749.99

Brand

OWC

Synology

Black Diamond

AddOn

G.SKILL

Kingston

CORSAIR

Visiontek

Current Deals

On Sale

Color

Black

Multi

Red

Green

Silver

Customer Rating

Top-Rated

5

4 & Up

CAS Latency

11

15

16

17

18

19

22

Performance Profile

Intel XMP 2.0

Voltage

1.2 volts

1.35 volts

1 volts

Lighting Type

None

ddr4 ram 2666 in Computers & Tablets (150)

Search all categories

Sort by:

OWC 16GB DDR4 2666MHz ECC UDIMM
WARRANTY VOID IF REMOVED

OWC - 16GB Replacement for Hynix HMA82GU8CJR8N-VK Micron MTA18ADF2G72AZ‐2G6 - ECC UDIMM DDR4 2666 2Rx8 288p 1.2V CL19 - Black Chips

Not yet reviewed

Not yet reviewed

Compare

32GB DDR4
2666MHz 260PIN SO-DIMM
WARRANTY VOID IF REMOVED

OWC - 64GB (2x32GB) Replacement for Crucial CT2K32G4SFD8266 CT2K32G4S266M - Non-ECC SODIMM DDR4 2666 2Rx8 260p 1.2V CL19 - Black Chips

Not yet reviewed

Not yet reviewed

Compare

128GB DDR4
2666MHz ECC REG DIMM
WARRANTY VOID IF REMOVED

OWC - 128GB Replacement for Crucial CT128G4YFJ426S CT128G4ZFE426S CT128G4ZFJ426S CT128G4YFE426S - ECC RDIMM DDR4 2666 8Rx4 - Black Chips

Not yet reviewed

Not yet reviewed

Compare

16GB DDR4
2666MHz ECC REG DIMM
WARRANTY VOID IF REMOVED

OWC - 16GB Replacement for Hynix HMA82GR7AFR8N‐VK HMA82GR7CJR8N‐VK HMA82GR7JJR8N‐VK - ECC RDIMM DDR4 2666 2Rx8 288p 1.2V - Black Chips

Not yet reviewed

Not yet reviewed

Compare

109-126 of 150 items

Previous 1...78 9

$199.99$19999

Get it by Sat, Oct 31 • FREE

$459.52$45952

Get it by Thu, Oct 29 • FREE

$999.99$99999

Get it by Thu, Oct 29 • FREE

$135.00$13500

Get it by Sat, Oct 31 • FREE