MEM-DR532MD-ER48 - 32GB DDR5-4800 ECC RDIMM 2Rx8 Server Memory | Supermicro
MPN: MEM-DR532MD-ER48 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $145 | $145.00 |
| 10 | $139 | $1,390.00 |
| 100 | $129 | $12,900.00 |
| 500 | $119 | $59,500.00 |
| 1,000 | $109 | $109,000.00 |
MEM-DR532MD-ER48 Overview
A RDIMM (Registered DIMM) is a type of server-class memory module that places a register buffer between the DRAM chips and the memory controller. This buffering reduces electrical load on the controller, enabling higher module counts per channel than unbuffered memory. Within the server memory hierarchy: DRAM chip -> DIMM -> RDIMM (buffered, ECC) -> server memory module. RDIMMs are required for most enterprise CPUs and are incompatible with consumer desktops that lack register-buffer support.
Key features include 32 GB capacity in a single module, DDR5-4800 data rate (38.4 GB/s peak per module), on-module ECC for single-bit error correction, integrated PMIC for stable 1.1 V power delivery from the host, and JEDEC JESD79-5 compliance. The 2Rx8 dual-rank x8 organization provides two independent ranks of x8 DRAM devices, optimizing bandwidth on multi-channel server platforms.
DDR5 RDIMMs are used in mainstream 1P and 2P server motherboards based on Intel Sapphire Rapids / Emerald Rapids and AMD EPYC 9004 (Genoa / Bergamo). Typical applications include virtualization hosts, AI inference nodes, in-memory databases, and high-density VDI clusters.
When sizing platforms, ensure the host CPU memory controller supports DDR5-4800 (PC5-38400) and that the motherboard BIOS recognizes 2Rx8 32 GB RDIMMs in the validated QVL for reliable operation.
Drop-in alternatives for MEM-DR532MD-ER48 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MEM-DR532MD-ER48 (same form factor and footprint) — differing in Data Rate, ECC, Form Factor, JEDEC Compliance, Module Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MEM-DR532MD-ER48-AM
✅ Drop-In📋 Reference alternative (not in catalog)
MEM-DR532MD-ER48-ACC
✅ Drop-In📋 Reference alternative (not in catalog)
M321R4GA3BB6-CQK
✅ Drop-In✓ In Stock
$1066.4063 / Unit
View Datasheet →MTC20F2085S1RC48BA1
✅ Drop-In📋 Reference alternative (not in catalog)
HMCG88MEBRA
✅ Drop-In📋 Reference alternative (not in catalog)
MEM-DR532L-HL01-ER48
✅ Drop-In📋 Reference alternative (not in catalog)
MEM-DR532MD-ER48 Maximum Ratings & Electrical Characteristics
| Memory Type | DDR5 SDRAM |
| Module Type | RDIMM (Registered DIMM) |
| Capacity | 32 GB |
| Data Rate | 4800 MT/s (PC5-38400) |
| Rank Configuration | 2Rx8 (Dual Rank x8) |
| CAS Latency | CL40 |
| Operating Voltage | 1.1 V |
| ECC | Yes (Registered ECC) |
| Pin Count | 288-pin |
| Form Factor | RDIMM |
| DRAM Manufacturer | Samsung or Micron (OEM) |
| Module Height | Standard 31.25 mm (1.23 in) |
| On-module PMIC | Yes (DDR5 integrated) |
| Operating Temperature | 0C to +85C (server) |
| JEDEC Compliance | JESD79-5 DDR5 SDRAM |
| RoHS Status | Compliant |
MEM-DR532MD-ER48 Pin Configuration
| Pin 1 | VSS — Ground reference |
| Pin 2 | DQ0_A — Data lane A, bit 0 |
| Pin 73 | DQ0_B — Data lane B, bit 0 |
| Pin 144 | DQ0_C — Data lane C, bit 0 |
| Pin 215 | DQ0_D — Data lane D, bit 0 |
Typical Applications
MEM-DR532MD-ER48 is suitable for 6 applications: Enterprise Virtualization Servers, AI Inference Server Memory, In-Memory Database Servers, High-Density VDI Cluster Nodes, Software-Defined Storage Caching, Cloud Computing Compute Instances.
Enterprise Virtualization Servers
The Supermicro MEM-DR532MD-ER48 fits VMware vSphere and Microsoft Hyper-V virtualization hosts because 32 GB DDR5-4800 2Rx8 RDIMMs deliver 38.4 GB/s per-module bandwidth with on-module ECC for multi-tenant reliability. Each module provides enough headroom for 8-12 VMs per DIMM slot on Sapphire Rapids platforms, while the registered buffer enables 8 DIMMs per channel at full speed. Supermicro MCL validation guarantees drop-in compatibility with SYS-1029P-WTRT and SYS-220BT-HNTR platforms running mixed workload VMs.
Recommended
AI Inference Server Memory
The MEM-DR532MD-ER48 is well matched for AI inference nodes running Llama 3 or similar large language models at 7B/13B parameter scale, where DDR5-4800 bandwidth directly determines token throughput. The 2Rx8 dual-rank organization maximizes channel utilization on Intel Sapphire Rapids HBM-less configurations, while ECC prevents silent bit-flip errors that corrupt inference weights. A single Supermicro AS-2114S-WTRT with 8 of these RDIMMs provides 256 GB of validated inference memory at $1000+ cost savings versus HBM-equipped alternatives.
Recommended
In-Memory Database Servers
For Redis, SAP HANA, and Aerospike in-memory databases, the MEM-DR532MD-ER48's 32 GB density and 4800 MT/s speed allow fitting larger working sets per node while maintaining sub-millisecond query latency. The DDR5 on-module PMIC provides tighter voltage regulation than DDR4's motherboard VRM path, reducing memory-related jitter spikes by approximately 20 percent. 2Rx8 dual-rank improves random-access performance over single-rank alternatives by interleaving operations across two ranks.
Recommended
High-Density VDI Cluster Nodes
Virtual Desktop Infrastructure deployments using Citrix Virtual Apps or VMware Horizon benefit from the MEM-DR532MD-ER48's 32 GB per-DIMM capacity, allowing each server to host 80-120 Windows 11 VDI sessions. The registered ECC corrects the memory errors that would otherwise cause VDI session crashes, while DDR5-4800 bandwidth keeps login storms (250+ concurrent user authentications) responsive. Supermicro SYS-1029P-WTRT validated configurations typically deploy 8-16 of these modules per host.
Recommended
Software-Defined Storage Caching
The MEM-DR532MD-ER48 serves as write-back cache memory for Ceph OSD nodes and VMware vSAN cache tier in software-defined storage clusters. The 1.1 V DDR5 operation reduces power per gigabyte by approximately 20 percent versus DDR4-3200 RDIMMs of equivalent capacity, important in 24x7 storage clusters. Registered ECC prevents silent data corruption in cached writes - critical for storage systems where bit-flips propagate to disk.
Recommended
Cloud Computing Compute Instances
Public cloud and private cloud compute nodes based on Supermicro SYS-220BT-HNTR and similar platforms deploy the MEM-DR532MD-ER48 as standardized memory for general-purpose cloud instances. The 2Rx8 organization provides balanced bandwidth for mixed read/write cloud workloads, while Supermicro MCL validation ensures predictable behavior across the hardware fleet. Cloud operators typically deploy 4-8 of these modules per compute node to balance memory-per-vCPU ratios.
Recommended
Recommended Products Summary
Engineering reference data for MEM-DR532MD-ER48 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MEM-DR532MD-ER48-AM | MEM-DR532MD-ER48-ACC | M321R4GA3BB6-CQK | MTC20F2085S1RC48BA1 | HMCG88MEBRA | MEM-DR532L-HL01-ER48 |
|---|---|---|---|---|---|---|---|
| Brand | Supermicro | Supermicro (AddOn compatible) | Accortec | Samsung | Micron | SK Hynix (A-Tech) | Supermicro |
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s |
| Rank | 2Rx8 | 2Rx8 | 2Rx8 | 2Rx8 | 2Rx8 | 2Rx8 | 2Rx8 |
| Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| CAS Latency | CL40 | CL40 | CL40 | CL40 | CL40 | CL40 | CL40 |
| ECC | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) |
| DRAM Supplier | Samsung or Micron | Samsung/Micron | Samsung/Micron | Samsung | Micron | SK Hynix | Samsung/Micron |
| Approx Price (qty 1) | $145 | $135 | $130 | $120 | $120 | $125 | $140 |
Key Differentiators
- Dual DRAM supplier flexibility (vs Third-party compatibles (A-Tech, NEMIX))
- Supermicro MCL validated (vs Accortec MEM-DR532MD-ER48-ACC)
- Lower price point (vs Supermicro MEM-DR532MD-ER48 OEM)
Design Notes
Always verify the Supermicro Memory Compatibility List (MCL) for your exact motherboard SKU before deploying MEM-DR532MD-ER48. Mixing 2Rx8 and 2Rx4 RDIMMs in the same channel causes the system to fall back to the slower rank speed, or in some platforms causes the DIMMs to be unrecognized. All DIMMs in a channel should match capacity, rank, and speed for optimal performance. Estimated: 8 percent performance loss when ranks mismatch on Intel Sapphire Rapids platforms.
DDR5 RDIMMs require adequate airflow in the server chassis. The MEM-DR532MD-ER48 dissipates approximately 5W per module at full 4800 MT/s bandwidth with 100 percent read utilization. Estimated: chassis inlet temperature should remain below 35C with redundant fans at 6000 RPM to keep DIMM hot-spot below 85C. Do not block DIMM slots with cable management - airflow is critical for JEDEC reliability.
Each MEM-DR532MD-ER48 includes an on-module PMIC that converts the host 12 V supply to the 1.1 V required by the DDR5 DRAM chips. Estimated: 4-5W per module at idle and 6-8W at full load. A Supermicro SYS-1029P-WTRT fully populated with 8 of these modules draws approximately 50W just for memory, which must be budgeted against the 1300W redundant PSU capacity. Always deploy with both PSUs active for memory subsystem reliability.
Compliance Information
RoHS compliant per Supermicro product page. JEDEC JESD79-5 DDR5 SDRAM standard compliant. REACH compliant. AEC-Q100 not applicable - server memory is not automotive grade.
