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Name:
D4RD-2666-32G
- Description:
- 32GB RDIMM ECC RAM DDR4-2666
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Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
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Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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D4RD-2666-32G Overview
D4RD-2666-32G is a high-performance DDR4 registered DIMM engineered for demanding server and workstation builds. The module offers a robust 32 GB capacity, 2666 MHz operating speed, and a precise CAS Latency of CL19, all running at a standard 1.2V. Its design features built-in ECC support with a registered buffering system to ensure optimum data integrity and high reliability.
D4RD-2666-32G comes in a single-channel kit configuration and is compatible with desktop, laptop, and server platforms, making it ideal for enterprise, workstation, and server applications. It incorporates a dedicated heatspreader for enhanced thermal management and is optimized for Intel Xeon Scalable and AMD EPYC platforms, without extra features such as RGB lighting or XMP support.
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Explore more options from Computer Memory & Ram or explore other Synology products.
D4RD-2666-32G Specifications
| Product Type | Computer Memory |
| Memory Type | DDR4 |
| Capacity | 32 GB |
| Compatible Platforms | Desktop / Laptop / Server |
| Compatible Systems | Rack Server |
| Form Factor | RDIMM |
| Kit Configuration | Single Channel |
| Speed | 2666 MHz |
| Operating Temperature | N/A |
| Reliability Rating | High Reliability |
| CAS Latency (CL) | CL19 |
| Voltage | 1.2V |
| ECC Support | Yes |
| Registered/Buffered | Registered |
| XMP Support | No |
| RGB Lighting | No |
| Heatsink / Heatspreader | Yes |
| Intel Platform Support | Intel Xeon Scalable |
| AMD Platform Support | AMD EPYC |
| Use Case | Server |
| Product Name | D4RD-2666-32G |
| Height | 1.2 inches |
| Width | 5.3 inches |
| Depth | 0.3 inches |
| Weight | 0.3 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| AMD Platform Support | AMD EPYC | N/A | N/A | N/A | N/A |
| Capacity | 32 GB | 8 GB | 16 GB | 4 GB | 4 GB |
| CAS Latency (CL) | CL19 | CL11 | CL11 | CL11 | CL19 |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop | Desktop | Desktop |
| Compatible Systems | Rack Server | N/A | N/A | Workstation | N/A |
| Depth | 0.3 inches | N/A | N/A | N/A | 0.3 inches |
| ECC Support | Yes | No | No | No | No |
| Form Factor | RDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Heatsink / Heatspreader | Yes | Yes | No | No | Yes |
| Height | 1.2 inches | N/A | N/A | N/A | 1.4 inches |
| Intel Platform Support | Intel Xeon Scalable | N/A | N/A | N/A | N/A |
| Kit Configuration | Single Channel | Dual Channel | Dual Channel | Dual Channel | Single Channel |
| Memory Type | DDR4 | DDR3 | DDR3 | DDR3 | DDR4 |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Product Name | D4RD-2666-32G | RAM1600DDR3L-8GBX2 | RAMEC1600DDR3-8GBX2 | RAMEC1600DDR3-2GBX2 | D4NESO-2666-4G |
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Registered/Buffered | Registered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| Reliability Rating | High Reliability | Standard | Standard | Standard | Standard |
| RGB Lighting | No | No | No | No | No |
| Speed | 2666 MHz | 1600 MHz | 1600 MHz | 1600 MHz | 2666 MHz |
| Use Case | Server | Gaming | General Use | Gaming / Workstation | Gaming |
| Voltage | 1.2V | 1.35V | 1.5V | 1.5V | 1.2V |
| Weight | 0.3 lbs | N/A | N/A | N/A | 0.22 lbs |
| Width | 5.3 inches | N/A | N/A | N/A | 5.3 inches |
| XMP Support | No | No | No | No | Intel XMP 2.0 |
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Questions & Answers
Q
What are the specifications of the D4RD-2666-32G RDIMM ECC RAM?
A
The D4RD-2666-32G is a 32 GB DDR4‐2666 MHz registered ECC (RDIMM) module, operating at 1.2 V with CL19 latency and optimized for server and workstation stability.
Q
What does RDIMM ECC mean and why is it important?
A
RDIMM (Registered DIMM) ECC (Error-Correcting Code) memory uses a register to buffer commands and corrects single-bit errors, improving data integrity and system uptime in servers and critical applications.
Q
Which motherboards and chipsets are compatible with 32GB DDR4-2666 RDIMM ECC RAM?
A
This module is compatible with most Intel Xeon Scalable and AMD EPYC platforms, as well as server/workstation motherboards that explicitly support DDR4 RDIMM ECC at 2666 MHz.
Q
Can I mix this 32GB RDIMM ECC RAM with standard UDIMM memory?
A
No. Mixing registered ECC DIMMs with unbuffered UDIMMs is not supported. Use only identical RDIMM ECC modules to ensure stability and proper system operation.
Q
How do I install the 32GB RDIMM ECC DDR4-2666 module?
A
Power off the system, discharge static, align the module’s notch with the DIMM slot key, press firmly until latches click, then power on and verify ECC detection in BIOS.
Q
Does the D4RD-2666-32G support dual- and quad-channel configurations?
A
Yes. For optimal performance, install matching modules in motherboard-specified slots to enable dual- or quad-channel operation as defined by your platform’s memory topology.
Q
What voltage and latency does this RDIMM ECC RAM use?
A
It operates at a standard 1.2 V supply with CL19 CAS latency for DDR4-2666, balancing power efficiency and performance in server environments.
Q
How many 32GB modules can I install per system?
A
That depends on your motherboard. Most dual-CPU server boards support up to 16 slots (8 per CPU), allowing up to 512 GB when fully populated with 32 GB DIMMs.
Q
Do I need to enable any BIOS settings for ECC functionality?
A
ECC is typically auto-detected on supported platforms. Verify in BIOS that ECC mode is enabled under memory settings to ensure error correction is active.
Q
How can I verify ECC operation on this memory module?
A
Use your server’s management interface or diagnostic tools (e.g., IPMI, UEFI System Utilities) to check ECC status and view corrected error logs in real time.
Q
Will upgrading to 32 GB RDIMM ECC improve server performance?
A
Increased capacity reduces paging and improves multitasking, while ECC ensures data integrity—beneficial for database, virtualization, and mission-critical workloads.
Q
What warranty and support are provided for this 32GB RDIMM ECC RAM?
A
The module is backed by a limited lifetime warranty and includes technical support for installation, compatibility, and troubleshooting.
Q
Can I use this memory in desktop PCs?
A
No. Registered ECC DIMMs require a server or workstation motherboard that explicitly supports RDIMM ECC. Desktop boards typically only support unbuffered UDIMMs.
Q
How do I troubleshoot memory errors with the D4RD-2666-32G module?
A
Run MemTest86 or vendor diagnostics in standalone mode, verify correct seating, test modules individually, and check BIOS logs for ECC error reports.
Q
What is the difference between RDIMM and LRDIMM?
A
RDIMM uses a register to buffer command/address signals, while LRDIMM adds a buffer for data lines—LRDIMMs support higher densities but draw more power and cost more.
Q
Is firmware or BIOS update required for DDR4-2666 RDIMM ECC support?
A
Most modern server BIOS versions support DDR4-2666 natively. Check your motherboard vendor’s compatibility list and apply recommended BIOS updates if needed.
