Samsung 32GB DDR5 4800MHz ECC Unbuffered Server Memory — M324R4GA3BB0-CQKOL

The Samsung M324R4GA3BB0-CQKOL is a 32GB DDR5 ECC Unbuffered DIMM (UDIMM) operating at 4800MHz (PC5-38400) with CAS latency CL40 and 1.1V operating voltage. Built on Samsung's DDR5 x8 die architecture, this Dual Rank ECC UDIMM delivers next-generation DDR5 memory bandwidth with error-correcting protection for ECC UDIMM-compatible workstations and entry-level server platforms. At 32GB per module, this is a high-capacity ECC UDIMM ideal for memory-intensive workstation and entry-server workloads requiring both capacity and data integrity. Error-Correcting Code (ECC) technology continuously detects and corrects single-bit memory errors in real time, ensuring data integrity in mission-critical environments.

Key Features

• 32GB High-Capacity ECC UDIMM: Maximum capacity DDR5 ECC UDIMM for memory-intensive workstation and entry-server workloads
• DDR5 4800MHz Platform: PC5-38400 delivers next-generation DDR5 memory bandwidth with broad DDR5 platform compatibility
• ECC Error Protection: Real-time single-bit error correction ensures data integrity for mission-critical workloads
• Samsung DRAM: Industry-leading manufacturing quality with proven reliability and longevity
• RoHS Compliant: Meets global environmental and safety standards

Technical Specifications

• Part Number: M324R4GA3BB0-CQKOL
• Manufacturer: Samsung
• Memory Type: DDR5 SDRAM
• Module Type: UDIMM ECC (Unbuffered)
• Capacity: 32GB
• Speed: 4800MHz (PC5-38400)
• CAS Latency: CL40
• Timing: 40-39-39
• Voltage: 1.1V
• Form Factor: 288-Pin DIMM
• Rank: Dual Rank (2Rx8)
• Die Organization: x8
• Data Width: 72-bit (64-bit + 8-bit ECC)
• Error Correction: SECDED (Single-bit correction, Double-bit detection)
• Operating Temperature: 0°C to 85°C

Use Cases

• ECC Workstations: AMD Ryzen Pro, Intel Xeon W, and Intel Core with ECC UDIMM support on DDR5 platforms requiring 32GB per slot
• Entry-Level DDR5 Servers: Tower and rack servers supporting DDR5 ECC UDIMMs for small business and departmental workloads
• NAS and Storage Servers: TrueNAS, Unraid, and ZFS-based storage platforms requiring high-capacity DDR5 ECC memory
• Development and Test Systems: ECC-protected DDR5 development environments requiring 32GB capacity per module

Compatibility

• Compatible with DDR5 ECC UDIMM slots only — not compatible with DDR5 RDIMM, Non-ECC UDIMM, or DDR4 slots
• CQKOL suffix denotes specific OEM or regional platform qualification — verify against your platform's memory QVL before ordering
• Verify your motherboard or server platform explicitly supports DDR5 ECC UDIMMs and 32GB modules before ordering
• Do not mix ECC UDIMMs with RDIMMs or Non-ECC UDIMMs in the same system

Frequently Asked Questions

What is the difference between a DDR5 ECC UDIMM and a DDR5 RDIMM?

A DDR5 ECC UDIMM connects directly to the memory controller without a register buffer, offering lower latency but supporting fewer DIMMs per channel than RDIMMs. DDR5 RDIMMs use a register buffer for higher DIMM counts and densities. ECC UDIMMs and RDIMMs are not interchangeable.

What does the CQKOL qualification suffix indicate?

Samsung uses qualification suffixes to denote OEM validation, regional certification, or specific platform testing. CQKOL identifies this module's exact qualification tier — always cross-reference with your platform's memory compatibility or QVL list before purchase.

Is this module compatible with DDR4 platforms?

No — DDR5 and DDR4 are not interchangeable. Always verify your platform's memory type requirement before ordering.

Whether you are building a high-capacity DDR5 ECC workstation, deploying an entry-level DDR5 server, or expanding a ZFS-based NAS, the Samsung M324R4GA3BB0-CQKOL delivers the 32GB DDR5 ECC UDIMM reliability, error protection, and Samsung manufacturing quality your platform demands.