Dell 64GB DDR4 ECC Registered Memory Module – 0W403Y
The Dell 0W403Y is designed for compatible server platforms that require high-capacity DDR4 ECC registered memory. It offers a practical choice for system expansion and like-for-like replacement applications where the module characteristics must match the host design.
Key Features
- Enterprise-grade registered ECC architecture
- Dual-rank x4 memory organization
- 1.2V operating design
- Suitable for compatible Dell servers
- Useful for capacity upgrades and maintenance stock
- Exact 0W403Y identifier for matching
Product Specifications
- Manufacturer: Dell
- Part Number: 0W403Y
- Capacity: 64GB
- Memory Type: DDR4 ECC Registered DIMM
- Speed: 2933MHz
- Standard: PC4-23400
- CAS Latency: CL21
- Pin Count: 288-pin
- Voltage: 1.2V
- Rank: Dual rank
- Organization: x4
- Product Type: Server Memory
Installation Guidance
- Confirm registered ECC DDR4 support on the target platform
- Review the server manufacturer”s slot and channel population requirements
- Check compatibility with the density and organization of installed modules
- Verify available DIMM slots and firmware support
Use Cases
- Enterprise server capacity expansion
- Virtual machine host upgrades
- Application and database infrastructure
- Replacement of an equivalent server DIMM
- Maintaining standardized spare memory inventory
Compatibility
- For compatible Dell systems using DDR4 ECC registered DIMMs
- Confirm capacity, speed, rank, organization, voltage, and latency requirements
- Do not mix with unsupported unbuffered or non-ECC memory
- Use the exact 0W403Y part number for replacement matching
Frequently Asked Questions
- Can this be installed in a standard desktop?
- No. It is server memory with registered ECC architecture.
- What should be verified before purchase?
- Check the server”s supported memory type, population plan, density, and organization.
- How should I identify a replacement?
- Match the exact 0W403Y part number and confirm the complete system specification.
The Dell 0W403Y is a high-capacity replacement and upgrade option for compatible DDR4 server platforms. Confirm the host memory design before ordering.


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