D4EC-2666-8G-AX Axiom Upgrades 8GB DDR4 ECC UDIMM
D4EC-2666-8G-AX Overview
The Axiom D4EC-2666-8G-AX is a high-reliability 8GB DDR4 memory module specifically engineered to serve as a 100% compatible equivalent for Synology NAS arrays, enterprise networking appliances, and entry-level server tower systems. Operating at 2666MHz (PC4-21300), it provides a stable and efficient data foundation for high-availability storage configurations, continuous file backups, and small-business network infrastructure.
A defining characteristic of this module is its Unbuffered ECC (UDIMM) architecture. It integrates Error Correction Code (ECC) technology to protect data integrity at the hardware level, but omits the register/buffer found in larger server DIMMs. This configuration makes it a strict technical requirement for specialized hardware environments.
$206
D4EC-2666-8G-AX Technical Specification
Axiom Upgrades 8GB DDR4 ECC UDIMM
Product Name 8GB DDR4 ECC UDIMM Synology D4EC-2666-8G
Manufacturer Part Number D4EC-2666-8G-AX
Product Type RAM Module
Memory Voltage 1.20 V
Memory Standard DDR4-2666/PC4-21300
Memory Technology DDR4 SDRAM
CAS Latency CL19
Memory Size 8 GB
Form Factor DIMM
Memory Speed 2666 MHz
Device Supported NAS Server
Error Checking ECC
Number of Pins 288-pin
Related products
-
Memory - RAM, HPE Memory - RAM
408853-B21 HP 4GB DDR2 Registered ECC PC2-5300 Server Memory
408853-B21 Overview
408853-B21 . Is a DDR2 Module. DDR2 Modules run from 533 to 800 MT/s (million transfers per second) Has a total capacity of 2GB (Gigabytes). The Bus Type is PC-5300. Registered ECC help prevent data corruption and maintain data integrity, usually used in servers. You can expect the data to transfer at a rate of 667 Mhz.
SKU: 408853-B21 -
Memory - RAM, HPE Memory - RAM
495605-B21 HP 64GB DDR2 Registered ECC PC2-5300 Server Memory
495605-B21 Overview
495605-B21 . Operates on 1.8 Volts within speeds between 533 and 800 MT/s (million transfers per second). This is a 8GB module. Has a Memory Bus Type of PC-5300. Registered ECC help prevent data corruption and maintain data integrity, usually used in servers. Has a data transfer rate of 667 Mhz.
SKU: 495605-B21 -
Memory - RAM, HPE Memory - RAM
343055-B21 HP 1GB DDR2 Registered ECC PC2-3200 Server Memory
343055-B21 Overview
343055-B21 . Is a DDR2 Module. DDR2 Modules run from 533 to 800 MT/s (million transfers per second) This is a 512MB module. The Bus Type is PC-3200. Uses ECC (Error Correcting Code), ideal when system failure must be avoided at all costs. Is also registered which makes it stable enough for server conditions. The data transfer rate for this specific part is 400 Mhz.
SKU: 343055-B21 -
Memory - RAM, HPE Memory - RAM
343056-B21 HP 2GB DDR2 Registered ECC PC2-3200 Server Memory
343056-B21 Overview
343056-B21 . Is a DDR2 Module. DDR2 Modules run from 533 to 800 MT/s (million transfers per second). This is a 1GB module. The Bus Type is PC-3200. Its ECC (Error Correction Code) features prevent data corruption and system failure which is typically ideal for server machines. You can expect the data to transfer at a rate of 400 Mhz.
SKU: 343056-B21
