Samsung M393A8G40AB2-CWE 64GB DDR4-3200 ECC注册（RDIMM）双级X4服务器内存模块
  • 产品分类:内存套件
  • 零件编号:M393A8G40AB2-CWE
  • 库存情况:In Stock
  • 状况:全新
  • 产品特色:准备发货
  • 最小订单:1单位
  • 原价:$299.00
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Title

Samsung M393A8G40AB2-CWE 64GB DDR4-3200 ECC Registered (RDIMM) Dual-Rank x4 Server Memory Module

Keywords

Samsung M393A8G40AB2-CWE, 64GB DDR4-3200, ECC Registered RDIMM, Dual Rank x4, PC4-25600R memory, server memory module, Samsung server RAM, CL22 latency

Description

The Samsung M393A8G40AB2-CWE is a high-capacity 64 GB DDR4 RDIMM memory module designed for enterprise servers and mission-critical applications. Operating at **3200 MT/s (PC4-25600R)**, this memory is ECC-registered, providing error detection and correction to ensure system stability under heavy workloads. 

With a rank structure of **dual-rank ×4**, this RDIMM module helps maximize performance across multi-channel memory controllers, especially in dual- or multi-socket server environments. It runs at low voltage (1.2V), contributing to power efficiency and reduced heat, which is beneficial in dense rack setups. 

Samsung, a trusted DRAM vendor, validates this module for compatibility with many server platforms including Dell, HPE, Lenovo, and others. It meets JEDEC standards, and as a registered module, it improves signal integrity when using multiple DIMMs per CPU socket. 

Typical use cases include virtualization hosts, database servers, storage controllers, or HPC clusters where memory bandwidth and capacity are critical. Whether replacing lower capacity modules or expanding memory, this 64 GB RDIMM helps reduce the number of modules needed, simplifying thermal and power management. 

Due to its high capacity and registered nature, it is more expensive than standard UDIMM or smaller modules, so buyers should ensure that their server’s memory controller supports 3200 MT/s and registered ECC RDIMM modules. 

Key Features

  • 64 GB capacity per module for high memory density and fewer slots used. 64GB DDR4-3200
  • DDR4-3200 speed (PC4-25600R) delivering high bandwidth and modern performance. PC4-25600R memory
  • ECC Registered (RDIMM) for data integrity and stability in servers and enterprise systems. ECC Registered RDIMM
  • Dual-Rank ×4 architecture enhances performance when populating multiple DIMMs per channel. Dual Rank x4
  • CL22 latency, typical for DDR4-3200 Registered modules—balanced latency vs throughput. CL22 latency
  • Compatibility with major server brands: Dell, HPE, Lenovo, etc.; 288-pin form factor standard. Samsung server RAM
  • JEDEC compliant, low voltage (1.2V), good reliability and lower power draw compared to older or non-ECC modules.

Configuration

ComponentSpecification / Detail
Part Number / SKUSamsung M393A8G40AB2-CWE
Capacity64 GB
Memory TypeDDR4 SDRAM Registered (RDIMM)
Speed / Data Rate3200 MT/s (PC4-25600R)
Rank / Organization2R ×4 (dual rank, x4 chips)
CAS LatencyCL22
Voltage1.20 V
Pins / Form Factor288-pin, JEDEC standard RDIMM
Error CorrectionECC Registered
Condition / AvailabilityNew / In stock from multiple vendors; warranty depends on seller. 

Compatibility

The M393A8G40AB2-CWE is compatible with server platforms that support ECC Registered DDR4-3200 RDIMM modules (PC4-25600R). This includes many Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and other enterprise servers. Ensure the memory controller in the CPU supports the desired speed. 

Memory channel population matters: although the module works standalone, full bandwidth is achieved when populating balanced DIMM slots across memory channels per socket. Mixing module capacities or rank structure can lead to lower speed or higher latency.

At voltage 1.2 V, it uses standard power for DDR4-3200; server should have adequate cooling especially with many high capacity RDIMMs. Form factor 288-pin means it fits standard RDIMM slots. BIOS firmware updates might be needed to support highest speed.

Usage Scenarios

1) Virtualization Hosts: Deploy in servers running VMware, Hyper-V, KVM with multiple VMs—64GB per DIMM helps raise memory per socket and reduce number of modules needed.

2) Database Servers: Ideal for database workloads (e.g. SQL, Oracle, PostgreSQL) where caching and buffer pools benefit strongly from large RDIMM memory.

3) HPC / Compute Nodes: Use in high-performance compute nodes where large amounts of RAM and memory bandwidth are required, but where DDR5 may not yet be supported or cost-justified.

4) Mixed Workload / Application Servers: Useful for web/application servers handling many simultaneous processes, batch processing, backend services, or analytics that need consistent memory performance.

5) Memory Expansion Projects: Perfect module when upgrading partially populated servers to full capacity, or replacing smaller capacity RDIMMs to standardize on 64GB modules.

Frequently Asked Questions

  1. Q: Will this module work in a server that currently has DDR4-2666 modules?
    A: Yes, but performance will usually be limited by the lowest speed modules. The system may auto-clock all DIMMs to 2666 MT/s if mixing speeds. For full 3200 MT/s, use matched modules of same spec.
  2. Q: Does “Dual Rank x4” vs other ranks/x widths matter in practice?
    A: Yes — “dual rank” often allows better memory interleaving and higher throughput when multiple DIMMs per channel are used. The “x4” organization refers to the chip layout; modules may differ in real-world performance based on how many chips per rank, etc. For many enterprise uses, dual-rank ×4 gives a good balance.
  3. Q: Can I mix this Samsung module with other RDIMMs in my server?
    A: You can mix, but best practice is to use identical capacity, speed, rank, and brand. Mixing may lead to reduced speed, increased latency, or instability. Always consult server memory population guidelines.
  4. Q: What about warranty / condition when buying from third-party vendors?
    A: New modules usually come with manufacturer or vendor warranty; refurbished or OEM surplus modules may come with shorter warranty. Check condition (new / refurbished), test reports, return policy. Authentic Samsung modules tend to have more consistent performance and reliability.
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