• In Stock
  • Sold by Newegg
  • AI Ready
  • Make an Offer
  • New
Department
Show More
Brands
Show More
Price
Show More
Type
Capacity
Show More
Speed
CAS Latency
Voltage
ECC
Buffered/Registered
Compatible System
All Top Brands
Availability
Condition
Current Promotion
Discount
Sold by
Useful Links
Customer Ratings
avatar

Any questions? Our AI beta will help you find out quickly.

Sort By:
View:
CORSAIR Vengeance LPX 32GB (4 x 8GB) 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CMK32GX4M4A2666C16
Quick View
CORSAIR Vengeance LPX 32GB (4 x 8GB) 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CMK32GX4M4A2666C16
  • CAS Latency: CL16
  • Voltage: 1.20V
  • Multi-channel Kit: Quad Channel Kit
  • Timing: 16-18-18-35
  • Model #: CMK32GX4M4A2666C16
G.SKILL Ripjaws Series 32GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model F4-2666C19S-32GRS
Quick View
G.SKILL Ripjaws Series 32GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model F4-2666C19S-32GRS
  • CAS Latency: CL19
  • Timing: 19-19-19-43
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: F4-2666C19S-32GRS
  • $219.99
  •  
  • $199.99 
  • Save: $20.00 (9%)
  • Free Shipping
Crucial 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model CT16G4SFRA266
Quick View
Crucial 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model CT16G4SFRA266
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: CT16G4SFRA266
A-Tech 64GB (2x32GB) 2Rx8 PC4-21300 / PC4-21300E DDR4 2666 MHz ECC UDIMM 1.2V ECC Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
  •  
  • $659.98 
Available Direct from A-Tech Available Direct from A-Tech
(NOT FOR HOME PC!) A-Tech 512GB 16x 32GB 2Rx4 PC4-21300R DDR4 2666 ECC REG RDIMM Server Memory RAM
Quick View
  •  
  • $6,224.93 
  • Free Shipping
A-Tech 32GB DDR4 2666 MHz PC4-21300 Laptop SODIMM 260-Pin 2Rx8 Memory RAM 1x 32G
Quick View
  •  
  • $334.05 
  • Free Shipping
(NOT FOR HOME PC!) A-Tech 192GB 6x 32GB 2Rx4 PC4-21300R DDR4 2666 ECC REG RDIMM Server Memory RAM
Quick View
  •  
  • $2,340.59 
  • Free Shipping
Kingston - KSM26SED8/16ME - Kingston 16GB DDR4 SDRAM Memory Module - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM - CL19 - 1.20
Quick View
Kingston - KSM26SED8/16ME - Kingston 16GB DDR4 SDRAM Memory Module - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM - CL19 - 1.20
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Model #: KSM26SED8/16ME
A-Tech 8GB 1Rx8 PC4-21300 DDR4 2666 ECC REG RDIMM Registered DIMM 288-Pin Single Rank x8 Server RAM Memory Module
Quick View
A-Tech 8GB 1Rx8 PC4-21300 DDR4 2666 ECC REG RDIMM Registered DIMM 288-Pin Single Rank x8 Server RAM Memory Module
  • Chipset: Major Brand Chipset
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 1Rx8
  • Model #: AT8G1D4D2666RS8N12V
  •  
  • $53.75 
Available Direct from A-Tech Available Direct from A-Tech
A-Tech 256GB (8x32GB) 2Rx8 PC4-21300E DDR4 2666 MHz ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 256GB (8x32GB) 2Rx8 PC4-21300E DDR4 2666 MHz ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Part Number: AT32G8D4D2666UD8N12V
  • Model #: AT32G8D4D2666UD8N12V
  •  
  • $2,639.92 
Direct from A-Tech Direct from A-Tech
A-Tech 64GB (8x8GB) 1Rx8 PC4-21300E DDR4 2666 MHz ECC UDIMM Unbuffered DIMM 288-Pin Single Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 64GB (8x8GB) 1Rx8 PC4-21300E DDR4 2666 MHz ECC UDIMM Unbuffered DIMM 288-Pin Single Rank x8 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Part Number: AT8G8D4D2666US8N12V
  • Model #: AT8G8D4D2666US8N12V
  •  
  • $599.92 
Direct from A-Tech Direct from A-Tech
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade Compatible with Synology RackStation RS2825RP+
Quick View
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade Compatible with Synology RackStation RS2825RP+
  • Voltage: 1.2V
  • Compatible System: Synology RackStation RS2825RP+ Synology DiskStation DS1825+ Synology DiskStation DS1825xs+ Synology DiskStation DS725+ Synology DiskStation DS925+
  • CAS Latency: CL19
  • Part Number: 2C6D42R816GB
  • Model #: OWC2C6D42R816GB-C329-SF
  •  
  • $145.99 
Available Direct from OWC Available Direct from OWC
OWC 8GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade Compatible with ASUSTOR AS6504RD AS6504RS LOCKERSTOR 8 AS6508T AS6510T AS6512RD
Quick View
OWC 8GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade Compatible with ASUSTOR AS6504RD AS6504RS LOCKERSTOR 8 AS6508T AS6510T AS6512RD
  • Voltage: 1.2V
  • Compatible System: ASUSTOR AS6504RD ASUSTOR AS6504RS ASUSTOR AS6508T ASUSTOR AS6510T ASUSTOR AS6512RD
  • CAS Latency: CL19
  • Part Number: 2C6D41R808GB
  • Model #: OWC2C6D41R808GB-B777-SF
  •  
  • $79.99 
Available Direct from OWC Available Direct from OWC
OWC 4GB Replacement for QNAP RAM-4GDR4A0-SO-2666 RAM-4GDR4T0-SO-2666 RAM-4GDR4T1-SO-2666 4GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V Non-ECC SODIMM Memory RAM Module Upgrade
Quick View
  •  
  • $35.99 
Direct from OWC Direct from OWC
OWC 16GB Replacement for QNAP RAM-16GDR4T0-SO-2666 RAM-16GDR4K0-SO-2666 RAM-16GDR4K1-SO-2666 16GB DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V Non-ECC SODIMM Memory RAM Module Upgrade
Quick View
  •  
  • $122.99 
Direct from OWC Direct from OWC
OWC 8GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V Non-ECC SODIMM Memory RAM Module Upgrade Compatible with QNAP TS-332X TS-473 TS-673 TS-832PX TS-832X TS-464-4G
Quick View
OWC 8GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V Non-ECC SODIMM Memory RAM Module Upgrade Compatible with QNAP TS-332X TS-473 TS-673 TS-832PX TS-832X TS-464-4G
  • Voltage: 1.2V
  • Compatible System: QNAP TS-332X QNAP TS-473 QNAP TS-673 QNAP TS-832PX QNAP TS-832X
  • CAS Latency: CL19
  • Part Number: 2S6D41R808GB
  • Model #: OWC2S6D41R808GB-B552-SF
  •  
  • $65.99 
Available Direct from OWC Available Direct from OWC
OWC 16GB Replacement for Synology D4EU02-16G - DDR4 2666 PC4-21300 CL19 2Rx8 288-pin 1.2V ECC Unbuffered DIMM Memory RAM Module Upgrade
Quick View
  •  
  • $145.99 
Direct from OWC Direct from OWC
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Replacement for AS-16GECD4 92M11-S16ECD40 Compatible with ASUSTOR LOCKERSTOR 10 PROAS7110T
Quick View
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Replacement for AS-16GECD4 92M11-S16ECD40 Compatible with ASUSTOR LOCKERSTOR 10 PROAS7110T
  • Voltage: 1.2V
  • Compatible System: ASUSTOR AS7110T
  • CAS Latency: CL19
  • Part Number: 2C6D42R816GB
  • Model #: OWC2C6D42R816GB-B778-SF
  •  
  • $145.99 
Available Direct from OWC Available Direct from OWC
A-Tech 64GB (8x8GB) 2Rx8 PC4-21300 / PC4-21300E DDR4 2666 MHz ECC UDIMM 1.2V ECC Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
  •  
  • $599.92 
Direct from A-Tech Direct from A-Tech
A-Tech 384GB Kit (6x64GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 384GB Kit (6x64GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0150
  •  
  • $2,399.94 
Direct from A-Tech Direct from A-Tech
A-Tech 96GB Kit (12x8GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 96GB Kit (12x8GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0162
  •  
  • $783.66 
Direct from A-Tech Direct from A-Tech
A-Tech 64GB Kit (4x16GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 64GB Kit (4x16GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0134
  •  
  • $587.45 
Direct from A-Tech Direct from A-Tech
A-Tech 32GB Kit (4x8GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 32GB Kit (4x8GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0159
  •  
  • $261.21 
Direct from A-Tech Direct from A-Tech
A-Tech 192GB Kit (6x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 192GB Kit (6x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0143
  •  
  • $1,456.62 
Direct from A-Tech Direct from A-Tech
A-Tech 384GB Kit (12x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC LRDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 384GB Kit (12x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC LRDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0146
  •  
  • $3,047.55 
Direct from A-Tech Direct from A-Tech
A-Tech 64GB Kit (2x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 64GB Kit (2x32GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC RDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0139
  •  
  • $485.54 
Direct from A-Tech Direct from A-Tech
A-Tech 256GB Kit (4x64GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC LRDIMM 288-Pin Memory Upgrade
Quick View
A-Tech 256GB Kit (4x64GB) RAM for Apple Mac Pro (2019, 8-Core, Rack & Tower) | DDR4 2666/2667MHz PC4-21300 ECC LRDIMM 288-Pin Memory Upgrade
  • Voltage: 1.20V
  • Compatible System: Apple Mac Systems
  • Parts: Lifetime
  • Labor: Lifetime
  • Model #: NE-MAC-0154
  •  
  • $1,439.96 
Direct from A-Tech Direct from A-Tech
32GB (2x16GB) DDR4 2666 (PC4 21300) SODIMM Laptop Memory RAM by Avarum RAM
Quick View
32GB (2x16GB) DDR4 2666 (PC4 21300) SODIMM Laptop Memory RAM by Avarum RAM
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: NRG32
  •  
  • $213.22 
  • Free Shipping
Direct from Avarum Direct from Avarum
Kingston 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Memory (Notebook Memory) Model KCP426SD8/16
Quick View
Kingston 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Memory (Notebook Memory) Model KCP426SD8/16
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Model #: KCP426SD8/16
Avarum RAM equal to 4GB Single DDR4 2666 MT/s (PC4-21300) CL19 x8 SODIMM 260-Pin Memory - CT4G4SFS8266
Quick View
Avarum RAM equal to 4GB Single DDR4 2666 MT/s (PC4-21300) CL19 x8 SODIMM 260-Pin Memory - CT4G4SFS8266
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: NP104
  •  
  • $26.41 
  • Free Shipping
Direct from Avarum Direct from Avarum
Avarum RAM equal to - DDR4 - kit - 32 GB: 2 x 16 GB - SO-DIMM 260-pin - 2666 MHz / PC4-21300 - CL19 - 1.2 V - unbuffered - non-ECC
Quick View
Avarum RAM equal to - DDR4 - kit - 32 GB: 2 x 16 GB - SO-DIMM 260-pin - 2666 MHz / PC4-21300 - CL19 - 1.2 V - unbuffered - non-ECC
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: NP87
  •  
  • $213.22 
  • Free Shipping
Direct from Avarum Direct from Avarum
Crucial 16GB 288-Pin DDR4 SDRAM RDIMM DDR4 2666 (PC4 21300) Server Memory Model CT16G4RFS4266
Quick View
Crucial 16GB 288-Pin DDR4 SDRAM RDIMM DDR4 2666 (PC4 21300) Server Memory Model CT16G4RFS4266
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 1Rx4
  • Model #: CT16G4RFS4266
Black Diamond Memory 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD16G2666MQN25
Quick View
Black Diamond Memory 16GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD16G2666MQN25
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Features: With decades of experience specializing in memory and server parts, Black Diamond Memory is a proven manufacturer in the industry. Our products currently support over 200,000 configurations as well as support for enterprise servers, desktops, laptops, and a large variety of other devices.
  • Model #: BD16G2666MQN25
  •  
  • $104.99 
  • Free Shipping
SAMSUNG 16GB ECC Registered DDR4 2666 (PC4 21300) Server Memory Model M393A2K40BB2-CTD
Quick View
SAMSUNG 16GB ECC Registered DDR4 2666 (PC4 21300) Server Memory Model M393A2K40BB2-CTD
  • Chipset: Major Brand Chipset
  • CAS Latency: CL17
  • Timing: 17-17-17
  • Voltage: 1.20V
  • Model #: 3SA2666195R4-16GPBOP