Product Overview
The Samsung M393A8G40BB4-CWE is a 64GB DDR4 SDRAM memory module designed for compatible servers and enterprise workstations. It operates at a rated data rate of 3200 MT/s and uses a 288-pin registered DIMM (RDIMM) form factor. Its dual-rank x4 organization, ECC support, and 1.2V operating voltage make it suitable for supported high-capacity server memory configurations.
Key Features
- 64GB capacity: Provides high-capacity memory expansion for compatible server platforms.
- DDR4-3200 performance: Rated at 3200 MT/s, corresponding to PC4-25600.
- ECC support: Provides error-correction capability on compatible server systems.
- Registered DIMM design: Uses registered memory architecture for supported enterprise platforms.
- Dual-rank x4 organization: Features a 2Rx4 configuration and nominal operating voltage of 1.2V.
Compatibility
This module is intended for servers and workstations that support 64GB DDR4 ECC registered DIMMs. RDIMMs are not interchangeable with standard unbuffered desktop DIMMs and generally cannot be mixed with load-reduced DIMMs (LRDIMMs). Verify the server model, processor support, memory capacity limits, and memory population rules before installation.
Typical Applications
- Enterprise server memory expansion
- High-capacity server memory configurations
- Virtualization and database workloads
- Replacement of matching 64GB DDR4 RDIMM modules
DC Supplies Product Note
Confirm the complete part number, M393A8G40BB4-CWE, against your server's memory compatibility list before ordering. This is a 64GB ECC registered server DIMM, not a standard desktop UDIMM or laptop SO-DIMM. Actual operating speed depends on the processor, server platform, and installed memory configuration.
Technical Specifications
| Brand | Samsung |
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| Part Number / MPN | M393A8G40BB4-CWE |
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| Product Type | Server memory module |
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| Capacity | 64GB |
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| Memory Technology | DDR4 SDRAM |
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| Rated Data Rate | 3200 MT/s |
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| Memory Standard | PC4-25600R |
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| Form Factor | RDIMM (Registered DIMM) |
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| Pin Count | 288-pin |
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| Rank Organization | Dual rank x4 (2Rx4) |
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| Module Organization | 8G x72 |
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| DRAM Component Organization | 4G x4 |
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| DRAM Component Count | 36 |
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| DRAM Component Density | 16Gb |
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| Error Correction | ECC |
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| Buffering | Registered |
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| CAS Latency | CL22 |
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| Operating Voltage | 1.2V |
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| Module Height | 31.25mm |
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Frequently Asked Questions
What is the capacity of this Samsung memory module?
The M393A8G40BB4-CWE has a capacity of 64GB.
What is its rated memory speed?
It is rated for DDR4-3200, or 3200 MT/s. Actual operating speed depends on the server platform and memory configuration.
Does this module support ECC?
Yes. It is an ECC registered memory module designed for compatible server systems.
Can I install it in a standard desktop computer?
Generally, no. Most consumer desktop motherboards require unbuffered UDIMMs rather than registered RDIMMs. Check your motherboard specifications before purchasing.
Can RDIMMs and LRDIMMs be mixed?
RDIMMs and LRDIMMs generally cannot be mixed in the same system. Follow the server manufacturer's memory configuration guidelines.
