Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin)
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Manufacturer: Crucial (Micron) Last updated: September 11, 2026
Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin) Review
The Micron MTC20C2085S1EC48BA1R is Micron's server-branded DDR5 ECC UDIMM, sold under Crucial's server-DDR5 listing as a direct DDR5 successor to the site's existing DDR4 Crucial ECC part, using true side-band ECC rather than DDR5's mandatory on-die correction alone.
True side-band ECC error correction, reported to and correctable by the operating system, distinct from the on-die ECC built into every DDR5 chip regardless of module type. As a Micron-built module it uses first-party DRAM from the chip manufacturer itself. For next-generation Threadripper (non-PRO) and Intel Xeon W-2500/3500 series workstations with explicit DDR5 ECC UDIMM support. Against the Kingston Server Premier KSM56E46BD8KM-32HA, covered elsewhere on this site, that module reaches a higher 5600MT/s speed at a correspondingly higher price. Against the Crucial (Micron) MTA18ASF4G72AZ-3G2B1, also covered elsewhere on this site, that module is the previous-generation DDR4 equivalent.
ECC and Unbuffered Operation
True side-band ECC error correction, reported to and correctable by the operating system, distinct from the on-die ECC built into every DDR5 chip regardless of module type. As a Micron-built module it uses first-party DRAM from the chip manufacturer itself.
Compatibility
For next-generation Threadripper (non-PRO) and Intel Xeon W-2500/3500 series workstations with explicit DDR5 ECC UDIMM support.
Comparison to Sibling Products
Against the Kingston Server Premier KSM56E46BD8KM-32HA, covered elsewhere on this site, that module reaches a higher 5600MT/s speed at a correspondingly higher price. Against the Crucial (Micron) MTA18ASF4G72AZ-3G2B1, also covered elsewhere on this site, that module is the previous-generation DDR4 equivalent.
Specifications
Identity
| Brand | Crucial (Micron) |
|---|---|
| Series | Crucial Server/Workstation |
Memory
| DDR Generation | DDR5 |
|---|---|
| Capacity | 32 GB |
| Speed | 4800 MT/s |
| CAS Latency | 40 |
| Voltage | 1.1 V |
Module and platform
| RAM Segment | Server |
|---|---|
| Pin Count | 288 |
Capacity
| Capacity Per Module | 32 GB |
|---|---|
| Module Count | 1 |
Speed and timings
| True Latency | 16.7 ns |
|---|
Silicon
| Memory IC | Micron |
|---|
Commercial
| Warranty | Limited Lifetime |
|---|
| Model Number | MTC20C2085S1EC48BA1R |
|---|---|
| Rank Configuration | 2Rx8 (Dual Rank, x8) |
| Registered | No, Unbuffered (UDIMM) |
| Platform Compatibility | Threadripper 7000 (non-PRO), Intel Xeon W-2500/3500 |
| Spec Score | 1.8 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Next-generation workstation builders who want Micron's first-party true ECC DDR5 UDIMM. This module extends the same Micron-manufactured assurance from the site's existing DDR4 part into the DDR5 generation.
Not for
- Not for buyers who want the highest available DDR5 ECC UDIMM speed. The Kingston KSM56E46BD8KM-32HA, covered elsewhere on this site, reaches a higher rated speed.
FAQs
What are the key specifications of the Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin)?
The Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin) is a memory kit from Crucial (Micron). Key specs: DDR Generation DDR5, Capacity 32GB, Kit Configuration 1 x 32GB, Pin Count 288, Speed 4800MHz.
Will the Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin) work with my current setup?
The Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin) lists DDR Generation is DDR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.
Who is the Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin) best suited to?
It suits next-generation workstation builders who want micron's first-party true ecc ddr5 udimm. this module extends the same micron-manufactured assurance from the site's existing ddr4 part into the ddr5 generation..
What are the drawbacks of the Micron (Crucial) MTC20C2085S1EC48BA1R (32GB DDR5-4800 ECC UDIMM/CL40/2Rx8/1.1V/288-Pin)?
It is a poor fit for not for buyers who want the highest available ddr5 ecc udimm speed. the kingston ksm56e46bd8km-32ha, covered elsewhere on this site, reaches a higher rated speed..
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