M321R4GA0PB2-CCP - 32GB DDR5-6400 ECC RDIMM | Samsung
MPN: M321R4GA0PB2-CCP ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for M321R4GA0PB2-CCP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
M321R4GA3EB2-CCP
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View Datasheet →M321R4GA0EB2-CCP
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View Datasheet →M321R4GA3EB2-CWM
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View Datasheet →M321R2GA3PB2-CCP
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View Datasheet →MR51200-314K1-M321R4GA0PB2-CCP-V27
✅ Drop-In📋 Reference alternative (not in catalog)
A-Tech 32GB DDR5-6400 ECC RDIMM
✅ Drop-In📋 Reference alternative (not in catalog)
M321R4GA0PB2-CCP Maximum Ratings & Electrical Characteristics
| Capacity | 32 GB (1 x 32 GB) |
| Memory Type | DDR5 SDRAM |
| Module Type | 288-pin RDIMM (ECC Registered) |
| Speed | 6400 MT/s (PC5-51200) |
| CAS Latency | CL52 |
| Operating Voltage | 1.1 V |
| Configuration | 1Rx4 (single rank, x4) |
| Organization | 4G x 72 |
| DRAM Devices | 20 x 4G x 4 DDR5 DRAM, FBGA package |
| ECC | ECC Registered (on-die ECC + side-band) |
| Form Factor | 288-pin DIMM |
| Bandwidth | 51.2 GB/s peak (PC5-51200) |
| Rank | Single Rank |
| Compliance | 100% JEDEC compliant |
| Compatible Platforms | Dell, HPE, Lenovo ThinkSystem, Supermicro (Xeon / EPYC DDR5 platforms) |
| GTIN / EAN | 4262552150022 |
M321R4GA0PB2-CCP standard Pin Configuration Guide
Complete pinout information for M321R4GA0PB2-CCP (standard package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for M321R4GA0PB2-CCP.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
M321R4GA0PB2-CCP is suitable for 6 applications: Enterprise Server Memory, Virtualization and VM-Density Hosts, Edge Compute Nodes, Workstation Memory Upgrades, Database and In-Memory Analytics, General-Purpose Data Center Compute.
Enterprise Server Memory
The M321R4GA0PB2-CCP is purpose-built for enterprise server platforms such as Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro systems using Intel Xeon Scalable or AMD EPYC DDR5 processors. Its 6400 MT/s (PC5-51200) data rate delivers 51.2 GB/s of peak bandwidth per channel pair, while ECC registered topology with on-die ECC plus side-band ECC keeps uncorrectable error rates within enterprise SLA requirements. The 1Rx4 single-rank configuration minimizes electrical load, allowing high module counts per server for dense configurations. Deployed between the CPU memory controller and the registered clock path, the module's on-module PMIC converts 12V to the 1.1V DRAM rail, improving power efficiency versus DDR4 at roughly 30% lower operating voltage.
Recommended
Virtualization and VM-Density Hosts
Virtualization hosts running VMware ESXi, KVM, or Hyper-V benefit directly from the M321R4GA0PB2-CCP's combination of 32GB per DIMM and DDR5-6400 bandwidth. Each VM allocates fixed guest memory, so capacity per socket determines consolidation ratio, while memory bandwidth caps the aggregate performance of co-resident workloads. Distributor positioning (GlobalMemorySupply) specifically cites low-VM-density hosts as a target use case for this SKU. The RDIMM's registered buffering maintains signal integrity across 8-16 DIMMs per server, and ECC protection prevents silent memory corruption that would otherwise propagate between tenant VMs. At CL52, random access latency is competitive with DDR4-3200 modules while bandwidth nearly doubles.
Recommended
Edge Compute Nodes
Edge compute appliances - compact servers deployed in telco central offices, retail backrooms, and factory cells - use the M321R4GA0PB2-CCP where JEDEC-standard DDR5 RDIMM capacity is required in short-depth chassis. Samsung positions this SKU explicitly for edge compute per distributor data. The 1.1V operation reduces total power draw, which matters where cooling and power budgets are constrained, and the on-module PMIC simplifies board design for edge OEMs. A single 32GB module per channel provides balanced bandwidth without the thermal density of fully populated channels. The module's JEDEC compliance guarantees interoperability across the wide range of Xeon-D, Xeon Scalable, and EPYC embedded edge platforms.
Recommended
Workstation Memory Upgrades
Professional workstations based on Xeon W and Threadripper PRO platforms accept 288-pin DDR5 RDIMMs, making the M321R4GA0PB2-CCP a valid upgrade for CAD, DCC, and simulation workloads. Its 6400 MT/s rate benefits memory-bandwidth-bound applications such as finite-element analysis, ray-traced rendering, and large-assembly CAD, where DDR5's dual 32-bit sub-channels reduce contention between the render thread pool and asset streaming. Single-rank 1Rx4 topology leaves electrical headroom to populate all eight DIMM slots without downclocking. Third-party verified-fitment listings (Amazon, Newegg) confirm recognition at full 32GB capacity and rated speed on ThinkStation-class platforms.
Recommended
Database and In-Memory Analytics
In-memory databases (SAP HANA-style architectures, Redis, ClickHouse) and analytics engines are limited by both installed memory and sustainable bandwidth. The M321R4GA0PB2-CCP contributes 32GB per module at PC5-51200 bandwidth, letting a dual-socket server reach multi-TB memory pools with RDIMM buffering that keeps the memory controller within its electrical limits. ECC is non-negotiable here: a single uncorrected bit flip in a column-store index can corrupt analytical results silently. The x4 device organization means one failed DRAM device affects only 4 bits of any 72-bit word, which ECC corrects without downtime. Plan population for balanced channels to sustain peak bandwidth under mixed read/write loads.
Recommended
General-Purpose Data Center Compute
For general-purpose compute fleets - web tiers, microservice clusters, CI runners - the M321R4GA0PB2-CCP offers a standard, JEDEC-compliant 32GB DDR5 building block that simplifies spares pooling across heterogeneous server generations. Router Switch markets this SKU specifically for higher server density and bandwidth in data centers, with a 200-unit MOQ program for fleet rollouts. The 6400 MT/s bin provides headroom so the same module works in both current 6400-capable platforms and future platform refreshes without inventory bifurcation. Standardized RDIMM form factor (288-pin, 1.1V) and broad OEM compatibility reduce qualification overhead when mixing Dell, HPE, and Supermicro hardware in one fleet.
Recommended
Recommended Products Summary
Engineering reference data for M321R4GA0PB2-CCP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M321R4GA3EB2-CCP | M321R4GA0EB2-CCP | M321R2GA3PB2-CCP | MR51200-314K1-M321R4GA0PB2-CCP-V27 |
|---|---|---|---|---|---|
| Package | 288-pin DIMM (RDIMM) | 288-pin DIMM - same | 288-pin DIMM - same | 288-pin DIMM - same | 288-pin DIMM - same |
| Brand | Samsung | Samsung | Samsung | Samsung | NEMIX RAM |
| Capacity | 32 GB | 32 GB | 32 GB | 16 GB | 32 GB |
| Speed | 6400 MT/s (PC5-51200) | 5600-class MT/s | 5600-class MT/s | 6400 MT/s (PC5-51200) | 6400 MT/s (PC5-51200) |
| CAS Latency | CL52 | [DATA_NEEDED] | [DATA_NEEDED] | CL52 | CL52 |
| Rank / Configuration | 1Rx4 | 1Rx4 | 1Rx4 | 1Rx4 | 1Rx4 |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC / Buffering | ECC Registered (RDIMM) | ECC Registered (RDIMM) | ECC Registered (RDIMM) | ECC Registered (RDIMM) | ECC Registered (RDIMM) |
| OEM QVL Status | Samsung OEM part | Samsung OEM part | Samsung OEM part | Samsung OEM part | Third-party, compatibility-tested (not on OEM QVLs) |
Key Differentiators
- Top-tier DDR5-6400 speed bin (vs M321R4GA0EB2-CCP)
- Double the capacity per module vs 16GB sibling (vs M321R2GA3PB2-CCP)
- OEM-validated part number (vs MR51200-314K1-M321R4GA0PB2-CCP-V27)
Design Notes
Never mix module types on one DDR5 channel: RDIMMs (like this part), UDIMMs, and LRDIMMs are electrically incompatible and most platforms will refuse to boot. When populating mixed capacities or speeds, all modules on a channel train to the slowest DIMM, so pairing the 6400 MT/s M321R4GA0PB2-CCP with a 4800 MT/s module forfeits its bandwidth advantage. Follow the server vendor population rules - balanced per-channel population (same count per channel, matched ranks) is required for multi-channel bandwidth and reliable training.
DDR5 moves voltage regulation onto the module: a PMIC converts the 12V DIMM slot supply to the 1.1V DRAM rail. Verify the server firmware exposes PMIC thermal monitoring, since PMIC throttling under sustained load can reduce effective bandwidth. Compared with DDR4's 1.2V, the 1.1V rail lowers per-bit energy, but at 6400 MT/s the access rate partially offsets this - plan chassis airflow so module inlet air stays within JEDEC ambient limits, and confirm the platform's firmware supports 6400 MT/s training profiles for 1Rx4 RDIMMs before fleet-wide purchase.
The registered (buffered) address/command path is what allows the M321R4GA0PB2-CCP to run at 6400 MT/s with multiple DIMMs installed - the register reduces capacitive load on the memory controller. Do not attempt to improve latency by substituting unbuffered modules; UDIMM loads at this data rate exceed what DDR5 server controllers drive reliably. For mixed 1Rx4 and 2Rx4 populations, consult the CPU vendor's memory training guidance: single-rank modules train faster and tolerate higher densities, which is why this 1Rx4 part is preferred for fully populated 8-16 DIMM servers.
Compliance Information
Verified data confirms 100% JEDEC DDR5 compliance (corewavelabs.com). RoHS/REACH status for this specific module SKU was not stated in the provided data and must be confirmed with Samsung or the distributor.
