Kingston KSM56R46BD4PMI-96HMI 96GB 5600MT/s DDR5 ECC Reg CL46 DIMM 2Rx4 Hynix M Renesas

Kingston KSM56R46BD4PMI-96HMI 96GB DDR5-5600 ECC Registered Server DIMM

Overview

The Kingston KSM56R46BD4PMI-96HMI is a 96GB DDR5 ECC Registered DIMM running at 5600 MT/s — a high-density, error-correcting memory module built for enterprise servers, workstations, and compute-intensive platforms that demand both capacity and reliability. This is a dual-rank, 2Rx4 module on a 288-pin interface, built around a Hynix M die paired with a Renesas register clock driver (RCD). If you are speccing memory for a rack server handling virtualization, in-memory databases, or surveillance video analytics workloads, this module is purpose-built for that environment.

Kingston's server memory line is validated against major platform compatibility lists, and this part follows the same discipline — it ships as a factory-new, genuine component sourced through commercial channels, not grey-market or parallel import stock.

Key Features

• 96GB Single-Module Density: Fitting 96GB into a single DIMM slot means you can build out high-memory configurations without maxing out every slot on the board. On a 16-slot server, 16 of these modules reaches 1.5TB of total system RAM — relevant for in-memory database workloads, large VM host footprints, or AI inference platforms where memory capacity is the primary bottleneck.
• DDR5-5600 (5600 MT/s) Data Rate: DDR5-5600 delivers substantially higher bandwidth than DDR4-3200 — roughly 75% more peak throughput per channel. For workloads like real-time video analytics, transcoding, or columnar database scans, that bandwidth headroom translates directly into reduced processing latency and higher concurrent throughput.
• ECC (Error-Correcting Code) + On-Die ECC: This module carries both ECC at the DIMM level and on-die ECC within the Hynix M DRAM itself. On-die ECC corrects single-bit errors within the die before data ever reaches the memory bus, while DIMM-level ECC provides an additional correction layer visible to the system. In a 24/7 server environment — especially one running security video management software — uncorrected memory errors cause silent data corruption or unexpected reboots. Dual-layer ECC is the right spec for always-on infrastructure.
• Registered (Buffered) Architecture: The register clock driver (RCD) on this module buffers command and address signals between the CPU memory controller and the DRAM chips. This is what makes the 2Rx4 dual-rank, high-density configuration stable at scale. Unbuffered DIMMs simply cannot run reliably at 96GB per slot — the RCD is non-negotiable at this density.
• CAS Latency 46 (CL46) at 5600 MT/s: CL46 at 5600 MT/s works out to approximately 16.4ns of true latency — competitive for DDR5 at this speed grade. For server workloads where random-access latency matters (OLTP databases, key-value stores), this is within normal operating range for registered DDR5.
• 1.1V Operating Voltage: DDR5's standard 1.1V supply (down from DDR4's 1.2V) reduces per-module power draw. Across a fully populated 16-DIMM server, the aggregate power savings are meaningful for thermal management and PUE in dense rack configurations.
• SPD Profile Support: This module includes a programmed SPD (Serial Presence Detect) profile, which allows the server's BIOS to automatically identify the module's timing parameters — 5600 MT/s, CL46, 1.1V — and configure the memory controller correctly at POST. No manual BIOS tuning required; plug in and the system reads the profile.
• Row Cycle Time 48ns / Row Active Time 32ns: These timing parameters define how quickly the memory array can be accessed and precharged for sequential operations. A 48ns row cycle time is consistent with high-bandwidth DDR5 operation and supports sustained throughput under mixed read/write workloads typical of enterprise NVR and analytics servers.
• Module Configuration 12288M x 80: The x80 organization (x72 ECC data + x8 ECC overhead) confirms this is a full ECC-width module — not a narrow-bus variant. Every bit written to this DIMM has ECC protection. This matters if your platform's memory controller requires full-width ECC DIMMs for error-reporting visibility at the OS level.

Integration and Compatibility

The KSM56R46BD4PMI-96HMI is designed for server platforms that support DDR5 Registered DIMMs (RDIMMs) at the 5600 MT/s speed grade. The Hynix M die and Renesas RCD combination is a common platform validation pairing — many enterprise server vendors explicitly qualify specific die/RCD combinations as part of their memory compatibility validation process. Before deploying, verify this specific component combination (die: Hynix M, RCD: Renesas) against your server's qualified vendor list (QVL) or hardware compatibility list (HCL). The 288-pin DIMM form factor is the standard DDR5 server socket; this module is not compatible with DDR4 slots or consumer (non-registered) DDR5 platforms.

For surveillance infrastructure specifically — NVR servers, video analytics appliances, or AI-accelerated edge compute platforms — the combination of 96GB per slot and ECC protection makes this a practical fit for systems running large numbers of high-resolution camera streams or on-server deep-learning inference workloads where memory capacity and stability are both requirements.

Frequently Asked Questions

Q: Is the KSM56R46BD4PMI-96HMI compatible with consumer desktop DDR5 motherboards?

A: No. This is a Registered (buffered) DIMM — it requires a server or workstation platform with a memory controller that explicitly supports RDIMMs. Standard consumer DDR5 motherboards use unbuffered (UDIMM) slots and will not recognize or boot with this module installed.

Q: What DRAM die and register clock driver does the KSM56R46BD4PMI-96HMI use?

A: This module uses a Hynix M die with a Renesas register clock driver (RCD). Both are identified in the part number suffix and are relevant to server platform QVL validation — check your server vendor's compatibility list for this specific die/RCD combination.

Q: Does the KSM56R46BD4PMI-96HMI support ECC?

A: Yes — it supports both DIMM-level ECC and on-die ECC within the Hynix M DRAM. On-die ECC corrects single-bit errors within the die; DIMM-level ECC provides a second correction layer visible to the system's memory controller and OS.

Q: What is the operating voltage of the KSM56R46BD4PMI-96HMI?

A: 1.1V, which is the standard DDR5 supply voltage. This is lower than DDR4's 1.2V, contributing to reduced per-module power consumption in high-density server configurations.

Q: Does this module include an SPD profile?

A: Yes. The KSM56R46BD4PMI-96HMI includes a programmed SPD profile. The server BIOS will automatically read the module's rated timings (5600 MT/s, CL46, 1.1V) at POST — no manual memory timing configuration is required.

Q: How many of these modules can be installed in a single server?

A: That depends entirely on the number of DIMM slots on your specific server platform. The module itself is a single 96GB DIMM (1 x 96GB). A 16-slot server fully populated with these modules would reach 1.5TB of system RAM — assuming the platform's memory controller supports that density and the QVL includes this module.

Jerry Tildsen

When I spec server memory for high-channel NVR builds or on-premises AI analytics platforms, the KSM56R46BD4PMI-96HMI stands out for a specific reason: the combination of 96GB per slot, dual-layer ECC (on-die plus DIMM-level), and a Hynix M die qualified against a Renesas RCD gives you a module that is both high-density and platform-validated. That pairing matters more than the headline speed when you are running 24/7 unattended infrastructure.

Technical Highlights:

• Dual-Layer ECC Architecture: On-die ECC within the Hynix M DRAM corrects single-bit errors before they reach the bus; DIMM-level ECC adds a second correction layer visible to the OS. On a server running continuous video ingest or analytics inference, this is the difference between silent data integrity and uncorrected bit-flip events that crash processes at 2AM.
• 5600 MT/s Bandwidth at CL46: The 5600 MT/s rate delivers roughly 75% more peak memory bandwidth per channel compared to DDR4-3200. For workloads like multi-stream H.265 decode, real-time object detection, or columnar database queries against large datasets, that bandwidth directly reduces pipeline stall time.
• 1.1V Operating Voltage: Across a fully populated 16-DIMM server chassis, the DDR5 voltage reduction from 1.2V (DDR4) to 1.1V aggregates to measurable thermal load reduction — relevant in high-density rack environments where cooling headroom is constrained.

Deployment Considerations:

• Verify the Hynix M die and Renesas RCD combination against your server platform's QVL before ordering at volume. Some platforms explicitly list qualifying die/RCD pairs, and a mismatch at this density can prevent POST or cause instability under load.
• This is a Registered DIMM — it will not install or function in a consumer DDR5 platform. Confirm your target server's memory controller supports RDIMMs and the 288-pin DDR5 slot physically matches before ordering.

This module is the right call for enterprise NVR servers running 64+ camera channels with on-board analytics, or for AI inference appliances where per-slot density determines whether you can fit the workload's memory footprint into available slots without adding another chassis.