Technical Snapshot

The Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) is a server-grade DDR4 RDIMM memory module designed for enterprise servers and workstations. Running at 2,666 MT/s, The module provides 64GB of DDR4 memory . Backed by a 5 Years warranty, this module targets server deployments, virtualization hosts, and high-availability computing environments requiring ECC error correction.

Use Case
Server deployments, virtualization, high-availability computing
Compatibility
RDIMM-compatible server motherboard
Category
DDR4 RDIMM — Synology Synology DDR4 ECC RDIMM
SYNOLOGY
Synology RAM
Synology Synology DDR4 ECC RDIMM

Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G)

DDR4 · RDIMM · 2,666 MT/s · 64GB

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 2,666 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 64GB
Operating voltage. Higher voltage allows faster speeds but increases power and heat.
Voltage 1.2V
DDR generation. DDR5 offers higher bandwidth and capacity than DDR4, but requires a DDR5-compatible motherboard.
Type DDR4
MPND4ER02-64G
EAN846504006526
CategoryMemory
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Memory Specifications

Memory TypeDDR4
Form FactorRDIMM
Total Capacity64GB
Speed2,666 MT/s
Voltage1.2V
ECCYes
Warranty5 Years

Full Specifications

Data sourced from Synology product specifications
Memory
Product LineSynology DDR4 ECC RDIMM
Memory TypeDDR4
Form FactorRDIMM
Total Capacity64GB
Module Count1
Module Capacity64GB
Speed2,666 MT/s
Timings & Voltage
Voltage1.2V
ECCYes
Product
BrandSynology
MPND4ER02-64G
EAN846504006526
Warranty5 Years
Physical
Weight0.064 kg
Package Dimensions19.41 x 16.41 x 19.51 cm

Support

Synology Memory Compatibility ToolCheck motherboard compatibility for this module
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Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) DatasheetPDF · Technical specifications
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Frequently Asked Questions

What motherboards are compatible with this memory?

The Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) requires a DDR4-compatible motherboard. Compatible platforms include AMD AM4 (B550, X570, B450, etc.) and Intel LGA 1700 (B660, Z690) or LGA 1200 (B560, Z590). DDR4 is NOT compatible with DDR5 slots — they use different pin configurations.

What speed does this memory run at?

The Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) runs at 2,666 MT/s. This is a JEDEC standard speed that works automatically without BIOS configuration.

Can I add more memory later?

Yes, the Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) is a single 64GB module. You can add additional compatible DDR4 RDIMM modules to populate empty slots. For best performance, use matched modules of the same speed and capacity to enable dual-channel mode.

Does this memory support ECC error correction?

Yes, the Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) includes ECC (Error-Correcting Code) support, which detects and corrects single-bit memory errors. This is essential for servers, workstations, and mission-critical applications where data integrity is paramount.

What warranty does this memory come with?

The Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G) comes with a 5 Years warranty from Synology.

JSON-LD Structured Data — Product + Breadcrumb
Product: Synology 64GB DDR4-2666 ECC Registered DIMM (D4ER02-64G)
MPN: D4ER02-64G
Schemas: Product + BreadcrumbList
Properties: 10 additionalProperty entries
Related: 4 isRelatedTo links