Kingston KSM32RD4/64HD 64GB 3200MT/S DDR4 ECC Reg CL22 DIMM 2RX4 Hynix

Kingston KSM32RD4/64HD 64GB DDR4-3200 ECC Registered Server DIMM

Overview

The Kingston KSM32RD4/64HD is a 64GB DDR4 ECC Registered DIMM rated at 3200 MT/s — a high-density server memory module built for workloads where both capacity and data integrity are non-negotiable. Running at 1.2V with a CL22 latency profile and a 2Rx4 rank configuration, this module is positioned for rackmount servers and workstations that demand reliable operation across extended duty cycles. If you're provisioning memory for a server platform that requires validated ECC support and registered buffering, this is the module to evaluate.

Key Features

• 64GB per DIMM at 3200 MT/s: A single slot delivers 64GB of bandwidth-capable memory — useful when slot count is the limiting factor in high-density configurations. At 3200 MT/s, you're at the upper range of mainstream DDR4 server speeds, which matters for memory-bound workloads like in-memory databases and large VM footprints.
• ECC (Error Correcting Code): ECC detects and corrects single-bit errors on the fly, preventing the kind of silent data corruption that can compromise long-running compute jobs, NVR recording engines, or virtualized environments. Non-ECC memory is a false economy in any production server context.
• Registered (Buffered) Architecture: The registered buffer between the memory controller and DRAM chips reduces electrical load on the CPU memory bus, enabling higher DIMM counts per channel without signal integrity issues. This is what allows dense multi-DIMM configurations in enterprise servers — unbuffered modules simply can't scale the same way.
• 2Rx4 Rank Configuration (8192M x 72): The dual-rank layout with x4 DRAM width is the standard for high-capacity server DIMMs. It gives the memory controller more interleaving opportunities, which can improve effective throughput compared to single-rank modules of equivalent capacity.
• CL22 at 1.2V: The 1.2V operating voltage is the standard DDR4 level — no exotic power rail requirements, no compatibility surprises with standard server PSUs. CL22 is consistent with high-density DDR4-3200 registered modules; expect latency in line with the speed tier.
• SPD Profile and JEDEC Compliance: The embedded SPD (Serial Presence Detect) profile lets the server BIOS auto-detect and configure the module correctly at boot without manual XMP/EXPO tuning. JEDEC compliance means the timing and voltage parameters are standardized — important for server platforms that validate memory against a qualified vendor list (QVL).
• Operating Temperature 0–85°C: The 0–85°C industrial-range operating spec accommodates servers running in warm data center environments or edge deployments without active cooling overhead, as long as system airflow keeps DIMM temperatures within range.
• Row Cycle Time 45.75 ns / Row Active Time 32 ns: These DRAM timing parameters are embedded in the SPD and used by the memory controller for row refresh scheduling. Tighter row active time contributes to consistent throughput under sustained read/write patterns.
• VPP 2.5V: The 2.5V programming power voltage is the standard for DDR4 registered modules. No special power delivery infrastructure is required — any compliant DDR4 server memory slot provides this rail.

Integration and Compatibility

The KSM32RD4/64HD is designed for server platforms that support DDR4-3200 registered ECC DIMMs in a 288-pin form factor. Before deploying, verify the target server's QVL (qualified vendor list) — most major platform vendors (Intel Xeon Scalable, AMD EPYC) publish per-DIMM validation lists, and registered ECC modules like the KSM32RD4/64HD are a standard inclusion on those lists for Kingston server memory. Check maximum DIMM density and per-channel population rules in the server's memory configuration guide, as mixing 2Rx4 and 1Rx4 modules in the same channel can force a speed downgrade on some platforms. This server memory module is single-unit packaged (1 x 64GB), so budget accordingly for multi-channel or multi-socket configurations. For NVR platforms and edge compute appliances that accept registered ECC DDR4, the large single-DIMM capacity simplifies memory provisioning when slot count is limited.

Frequently Asked Questions

Q: What servers is the Kingston KSM32RD4/64HD compatible with?

A: The KSM32RD4/64HD is a 288-pin DDR4 Registered ECC DIMM running at 3200 MT/s. It is designed for server platforms that support DDR4-3200 RDIMM modules, including systems built on Intel Xeon Scalable and AMD EPYC processors. Always verify compatibility against the specific server's qualified vendor list (QVL) before deploying.

Q: Is the KSM32RD4/64HD an ECC module?

A: Yes. The KSM32RD4/64HD includes ECC (Error Correcting Code) support, which detects and corrects single-bit memory errors in real time. This is a requirement for most enterprise server and workstation platforms and is essential for data integrity in 24/7 environments.

Q: What is the operating voltage for this module?

A: The KSM32RD4/64HD operates at 1.2V, the standard DDR4 voltage. The programming power voltage (VPP) is 2.5V, also standard for DDR4 registered modules — no special power delivery infrastructure is required.

Q: Can I mix this 2Rx4 module with single-rank DIMMs in the same server?

A: Mixing rank configurations (2Rx4 with 1Rx4) in the same memory channel is possible on many platforms but can force a memory speed downgrade or require specific population rules. Consult your server's memory configuration guide or QVL to confirm supported mixing configurations before installing.

Q: Does the KSM32RD4/64HD include SPD auto-configuration?

A: Yes. The module includes an embedded SPD (Serial Presence Detect) profile and is JEDEC compliant, allowing the server BIOS to automatically detect and configure the correct timings and voltage at boot without manual intervention.

Q: What is the operating temperature range for this module?

A: The KSM32RD4/64HD is rated for 0°C to 85°C operating temperature, accommodating standard data center environments and edge compute deployments where ambient temperatures may be elevated.