MTC20F1045S1RC48BA1: Micron 32GB DDR5-4800MHz PC5-38400 ECC Registered CL40 1Rx4 RDIMM Server Memory
Also listed as: MTC20F1045S1RC48BA1R, Micron 32GB DDR5 RDIMM, MTC20F1045S1RC48B · made by Micron
The Micron MTC20F1045S1RC48BA1 is a 32GB single-rank (1Rx4) DDR5-4800 registered ECC DIMM designed for high-efficiency data center compute nodes based on 4th Gen Intel Xeon Scalable and AMD EPYC 9004 series processors. Operating at 1.1V with CL40 latency, it provides on-die ECC alongside module-level sideband ECC to ensure high data integrity for mission-critical enterprise workloads. Secondary market buyers should verify the SPD EEPROM data, examine the 288-pin edge connector for wear, and confirm that memory channels are populated symmetrically.
Specifications
| Part number | MTC20F1045S1RC48BA1 |
|---|---|
| Brand | Micron |
| Made by | Micron |
| Type | Memory |
| Other numbers | MTC20F1045S1RC48BA1R, Micron 32GB DDR5 RDIMM, MTC20F1045S1RC48B |
| Status | current |
| Capacity (GB) | 32 |
| Speed | DDR5-4800 |
| Rank width | 1Rx4 |
| Generation fit | Intel 4th Gen Xeon Scalable and AMD EPYC 9004 series servers |
About the MTC20F1045S1RC48BA1
MTC20F1045S1RC48BA1 is Micron's 32GB single-rank (1Rx4) DDR5-4800 registered ECC memory module for enterprise data centers. Operating at 1.1V standard JEDEC voltage with CL40 latency, it provides 38.4 GB/s theoretical bandwidth per channel for servers based on 4th Gen Intel Xeon Scalable (Sapphire Rapids) and AMD EPYC 9004 (Genoa) processors, replacing DDR4-3200 RDIMMs.
Compatibility
Compatible with enterprise servers supporting DDR5 RDIMMs, including Dell PowerEdge 16G, HPE ProLiant Gen11, and Lenovo ThinkSystem V3. It does not fit DDR4 server motherboards due to mechanical notch placement. To maintain optimal memory channel performance, do not mix single-rank (1Rx4) modules with dual-rank (2Rx4) modules on the same channel.
How to identify a genuine unit
The module features Micron DRAM chips on a green PCB with a barcode sticker reading MTC20F1045S1RC48BA1, 32GB 1Rx4 PC5-4800B-RC0. The module has an integrated on-die PMIC in the center. In system BMC/IPMI inventories, it reports Micron manufacturer identification and standard JEDEC timings.
Buying used
Request diagnostic test reports (such as MemTest86+) verifying zero single-bit or multi-bit ECC error corrections. Check the 288-pin gold contact edge for mechanical gouging or peeled traces. Ensure that the onboard PMIC component is intact and free of signs of thermal stress.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 120 (1 sighting, Oct 2026)
Used: USD 75 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 120 | 2026-10-27 | |
| ebay.com | used | USD 75 | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- Lenovo 4X77A77495 ThinkSystem 32GB TruDDR5 4800MHz (1Rx4 1.1V) RDIMM ThinkSystem 32GB TruDDR5 4800MHz 1Rx4 RDIMM
- Dell AB949334 Dell 32GB DDR5 4800MHz 1Rx4 RDIMM
FAQ
What is the rank width of this Micron 32GB module?
Single-rank by 4 (1Rx4).
Can this RDIMM be installed in a consumer PC?
No, it requires registered ECC RDIMM support only found on server and workstation platforms.
Buying or selling MTC20F1045S1RC48BA1?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Micron DDR5 Server DRAM Technical Specifications, checked 2026-10-27