• In Stock
  • Sold by Newegg
  • Make an Offer
  • New
Department
Show More
Brands
Show More
Price
Show More
Speed
Type
Capacity
Show More
CAS Latency
Voltage
ECC
Buffered/Registered
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:
Black Diamond Memory 16GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model BD16G2666MQ25
Quick View
Black Diamond Memory 16GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model BD16G2666MQ25
  • BIOS/Performance Profile: Intel XMP 2.0
  • 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 #: BD16G2666MQ25
Crucial 32GB (2 x 16GB)  260-Pin DDR4 2666 (PC4-21300) SDRAM SODIMM Memory Module, CL19, Unbuffered, Dual Ranked x8, 2048M x 64, Non-ECC, 1.2V (CT16G4SFD8266) Micron Memory for ASUS TUF Gaming FX705
Quick View
Crucial 32GB (2 x 16GB) 260-Pin DDR4 2666 (PC4-21300) SDRAM SODIMM Memory Module, CL19, Unbuffered, Dual Ranked x8, 2048M x 64, Non-ECC, 1.2V (CT16G4SFD8266) Micron Memory for ASUS TUF Gaming FX705
  • Voltage: 1.20V
  • Compatible System: Compatible with ASUS TUF Gaming FX705
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Model #: CT16G4SFD8266-1351
  •  
  • $189.00 
Kingston 16GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model KCP426NS8/16
Quick View
Kingston 16GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model KCP426NS8/16
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • BIOS/Performance Profile: Intel XMP 2.0
  • Model #: KCP426NS8/16
Micron 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MTA18ASF2G72PDZ-2G6J
Quick View
Micron 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MTA18ASF2G72PDZ-2G6J
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Type: 288-Pin DDR4 SDRAM
  • Rank: Dual-rank
  • Model #: MTA18ASF2G72PDZ-2G6J
A-Tech 512GB (8x64GB) 2S2Rx4 (4Rx4 3DS) PC4-21300R DDR4 2666 MHz ECC RDIMM Registered DIMM 288-Pin Quad Rank x4 3DS/TSV Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 512GB (8x64GB) 2S2Rx4 (4Rx4 3DS) PC4-21300R DDR4 2666 MHz ECC RDIMM Registered DIMM 288-Pin Quad Rank x4 3DS/TSV Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Rank: 2S2Rx4 (4Rx4 3DS/TSV)
  • Model #: AT64G8D4D2666RQ4N12V
  •  
  • $3,199.92 
Available Direct from A-Tech Available Direct from A-Tech
A-Tech 64GB 4x 16GB DDR4 2666 MHz Desktop PC4-21300 DIMM 288-Pin Memory RAM Kit
Quick View
  •  
  • $681.94 
  • Free Shipping
A-Tech 64GB 2x 32GB PC4-21300 Desktop DDR4 2666 Non-ECC DIMM 288-Pin Memory RAM
Quick View
  •  
  • $627.25 
  • Free Shipping
A-Tech 32GB 2x 16GB PC4-21300 Laptop SODIMM 260-Pin DDR4 2666 MHz Memory RAM Kit
Quick View
  •  
  • $345.97 
  • Free Shipping
OWC 32GB (2x16GB) DDR4 2666 PC4-21300 CL19 2Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade Compatible with Synology ActiveProtect DP320 DP340
Quick View
  •  
  • $290.52 
Direct from OWC Direct from OWC
A-Tech 128GB (8x16GB) 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 128GB (8x16GB) 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: AT16G8D4D2666UD8N12V
  • Model #: AT16G8D4D2666UD8N12V
  •  
  • $1,279.92 
Direct from A-Tech Direct from A-Tech
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 VLP 288-pin 1.2V VLP ECC Unbuffered DIMM Memory RAM Module Upgrade Compatible with Supermicro Motherboard X11SSM X11SSM-F X11SSW-4TF X11SSW-F X11SSW-TF
Quick View
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 VLP 288-pin 1.2V VLP ECC Unbuffered DIMM Memory RAM Module Upgrade Compatible with Supermicro Motherboard X11SSM X11SSM-F X11SSW-4TF X11SSW-F X11SSW-TF
  • Voltage: 1.2V
  • Compatible System: Supermicro Motherboard X11SSM Supermicro Motherboard X11SSM-F Supermicro Motherboard X11SSW-4TF Supermicro Motherboard X11SSW-F Supermicro Motherboard X11SSW-TF
  • CAS Latency: CL19
  • Part Number: 2E6V42R816GB
  • Model #: OWC2E6V42R816GB-C298-SF
  •  
  • $199.99 
Direct from OWC Direct from OWC
OWC 64GB DDR4 2666 PC4-21300 CL19 4Rx4 288-pin 1.2V ECC Registered DIMM Memory RAM Module Upgrade Compatible with Fujitsu PRIMERGY TX2550 M4
Quick View
  •  
  • $459.99 
Direct from OWC Direct from OWC
OWC 64GB DDR4 2666 PC4-21300 CL19 4Rx4 288-pin 1.2V ECC Registered DIMM Memory RAM Module Upgrade Compatible with Fujitsu PRIMERGY RX4770 M4
Quick View
  •  
  • $459.99 
Available Direct from OWC Available Direct from OWC
Supermicro (HMA82GU7CJR8N-VK) 16GB SDRAM ECC DDR4 2666 (PC4 21300) Server Memory Model MEM-DR416L-HL01-EU26
Quick View
Supermicro (HMA82GU7CJR8N-VK) 16GB SDRAM ECC DDR4 2666 (PC4 21300) Server Memory Model MEM-DR416L-HL01-EU26
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: MEM-DR416L-HL01-EU26
OWC 16GB Replacement for QNAP RAM-16GDR4ECK0-RD-2666 RAM-16GDR4ECT0-RD-2666 16GB DDR4 2666 PC4-21300 CL19 2Rx8 288-pin 1.2V ECC Registered RDIMM Memory RAM Module Upgrade
Quick View
OWC 16GB Replacement for QNAP RAM-16GDR4ECK0-RD-2666 RAM-16GDR4ECT0-RD-2666 16GB DDR4 2666 PC4-21300 CL19 2Rx8 288-pin 1.2V ECC Registered RDIMM Memory RAM Module Upgrade
  • CAS Latency: CL19
  • Voltage: 1.2V
  • Part Number: 2R6D42R816GB
  • Type: 288-Pin DDR4 ECC RDIMM
  • Model #: OWC2R6D42R816GB-B591-SF
  •  
  • $133.99 
Direct from OWC Direct from OWC
OWC 16GB DDR4 2666 PC4-21300 CL19 2Rx8 288-pin 1.2V ECC Unbuffered DIMM Memory RAM Module Upgrade Compatible with Synology Unified Controller UC3400
Quick View
  •  
  • $145.99 
Available Direct from OWC Available Direct from OWC
16GB RAM Replacement for Micron MTA18ASF2G72PDZ-2G6B1, MTA18ASF2G72PDZ-2G6D1QG, MTA18ASF2G72PDZ-2G6E1, MTA18ASF2G72PDZ-2G6H1R, MTA18ASF2G72PDZ-2G6J1 | DDR4 2666 PC4-21300 ECC RDIMM 2Rx8 Server Memory
Quick View
  •  
  • $151.97 
Direct from A-Tech Direct from A-Tech
CORSAIR Vengeance LPX 16GB (4 x 4GB) 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CMK16GX4M4A2666C16
Quick View
Used - Very Good CORSAIR Vengeance LPX 16GB (4 x 4GB) 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CMK16GX4M4A2666C16
  • CAS Latency: CL16
  • Voltage: 1.20V
  • Timing: 16-18-18-35
  • Heat Spreader: Anodized Aluminum
  • Model #: CMK16GX4M4A2666C16
  •  
  • $110.00 
  • $6.95 Shipping
A-Tech 128GB Kit (4x32GB) 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 128GB Kit (4x32GB) 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-0141
  •  
  • $971.09 
Direct from A-Tech Direct from A-Tech
Crucial 16GB DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory CT16G4WFD8266
Quick View
Crucial 16GB DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory CT16G4WFD8266

OUT OF STOCK

  • Chipset: Micron Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Model #: CT16G4WFD8266
HPE 64GB Quad Rank 4Rx4 DDR4-2666 (PC4 21300) CL19 ECC Load Reduced Server Memory
Quick View
HP
HPE 64GB Quad Rank 4Rx4 DDR4-2666 (PC4 21300) CL19 ECC Load Reduced Server Memory
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Model #: 815101-B21
NEMIX RAM 8GB (1X8GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V 260-PIN Non-ECC SODIMM QNAP NAS RAM-8GDR4K0-SO-2666
Quick View
  •  
  • $57.99 
Direct from NEMIX RAM Direct from NEMIX RAM
NEMIX RAM 4GB (1X4GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V 260-PIN Non-ECC SODIMM QNAP NAS RAM-4GDR4A0-SO-2666
Quick View
  •  
  • $38.99 
Direct from NEMIX RAM Direct from NEMIX RAM
16GB (1x16GB) DDR4 2666 (PC4 21300) SODIMM Laptop Memory RAM by Avarum RAM
Quick View
16GB (1x16GB) 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 #: NRG29
  •  
  • $134.58 
  • Free Shipping
Direct from Avarum Direct from Avarum
Kingston ValueRAM KVR26S19D8/16 DDR4-2666 SODIMM 16GB/2Gx64 REG CL19 Notebook Memory
Quick View
Kingston ValueRAM KVR26S19D8/16 DDR4-2666 SODIMM 16GB/2Gx64 REG CL19 Notebook Memory
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unregistered
  • Model #: KVR26S19D8/16
Avarum RAM equal to 8GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Notebook Memory Model CT8G4SFS8266
Quick View
Avarum RAM equal to 8GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Notebook Memory Model CT8G4SFS8266
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: NP126
  •  
  • $76.60 
  • Free Shipping
Direct from Avarum Direct from Avarum
Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28
Quick View
Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28
  • CAS Latency: CL19
  • 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 #: BD32GX22666MQN28
  •  
  • $401.99 
  • Free Shipping
Black Diamond Memory 32GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Notebook Memory Model BD32G2666MQN28
Quick View
Black Diamond Memory 32GB 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Notebook Memory Model BD32G2666MQN28
  • CAS Latency: CL19
  • 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 #: BD32G2666MQN28
  •  
  • $200.99 
  • Free Shipping
Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
Quick View
Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
  • Chipset: Micron Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Multi-channel Kit: Quad Channel Kit
  • Model #: CT32G4RFD4266
OWC 16GB DDR4 2666MHz PC4-21300 CL19 1.2V 288-Pin Non-ECC UDIMM Memory RAM Compatible with Hp Desktop Pro 300 G6 A 300 G3 A G2 A G3
Quick View
OWC 16GB DDR4 2666MHz PC4-21300 CL19 1.2V 288-Pin Non-ECC UDIMM Memory RAM Compatible with Hp Desktop Pro 300 G6 A 300 G3 A G2 A G3
  • Voltage: 1.2V
  • Compatible System: HP Desktop Pro 300 G6 HP Desktop Pro A 300 G3 HP Desktop Pro A G2 HP Desktop Pro A G3
  • CAS Latency: CL19
  • Part Number: 2U6D42R816GB
  • Model #: OWC2U6D42R816GB-AEG
  •  
  • $122.99 
Available Direct from OWC Available Direct from OWC
OWC 16GB DDR4 2666MHz PC4-21300 CL19 1.2V 288-Pin Non-ECC UDIMM Memory RAM Compatible with Dell Optiplex 3060 Sff 3060 Tower 3070 Sff 3070 Tower 5060 Sff
Quick View
OWC 16GB DDR4 2666MHz PC4-21300 CL19 1.2V 288-Pin Non-ECC UDIMM Memory RAM Compatible with Dell Optiplex 3060 Sff 3060 Tower 3070 Sff 3070 Tower 5060 Sff
  • Voltage: 1.2V
  • Compatible System: Dell OptiPlex 3060 SFF Dell OptiPlex 3060 Tower Dell OptiPlex 3070 SFF Dell OptiPlex 3070 Tower Dell OptiPlex 5060 SFF
  • CAS Latency: CL19
  • Part Number: 2U6D42R816GB
  • Model #: OWC2U6D42R816GB-ADW
  •  
  • $122.99 
Available Direct from OWC Available Direct from OWC
HYNIX 32GB(2X16GB) DDR4 ECC Memory PC4-21300 2666MHz 2Rx8 Laptop Memory  HMA82GS7CJR8N-VK PIN-260 1.2V
Quick View
HYNIX 32GB(2X16GB) DDR4 ECC Memory PC4-21300 2666MHz 2Rx8 Laptop Memory HMA82GS7CJR8N-VK PIN-260 1.2V
  • CAS Latency: CL19
  • Type: 260-Pin DDR4 SO-DIMM
  • Rank: 2Rx8
  • Model #: hynix-16gb-ecc-2666 x2
  •  
  • $319.98 
OWC 16GB DDR4 RAM Compatible with Synology DiskStation DS3617xs and DS3617xsII NAS System 2666MHz PC4-21300 CL19 ECC Unbuffered SODIMM 2Rx8 1.2V Memory Upgrade
Quick View
OWC 16GB DDR4 RAM Compatible with Synology DiskStation DS3617xs and DS3617xsII NAS System 2666MHz PC4-21300 CL19 ECC Unbuffered SODIMM 2Rx8 1.2V Memory Upgrade
  • Voltage: 1.2V
  • Compatible System: Synology DiskStationDS3617xs Synology DiskStationDS3617xsII
  • CAS Latency: CL19
  • Part Number: 2C6D42R816GB
  • Model #: OWC2C6D42R816GB-ZAK-SF
  •  
  • $145.99 
Direct from OWC Direct from OWC
Samsung 32GB DDR4 2666MHz PC4-21300 1.2V 2Rx8 288-Pin UDIMM Desktop RAM Memory Module M378A4G43MB1-CTD
Quick View
Samsung 32GB DDR4 2666MHz PC4-21300 1.2V 2Rx8 288-Pin UDIMM Desktop RAM Memory Module M378A4G43MB1-CTD
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered / Unregistered
  • Color: Green
  • Model #: M378A4G43MB1-CTD-SM