This article covers crucial DDR5 ECC UDIMM 32GB 2Rx8 4800 CL40(Single Pack) MTC20C2085S1EC48BA1R.

Overview

Crucial's DDR5 ECC UDIMM memory, model MTC20C2085S1EC48BA1R, delivers 32GB of capacity in a single-pack configuration. Operating at 4800 MT/s with CL40 latency and a 2Rx8 (dual-rank, x8) organization, it optimizes memory access efficiency for demanding workloads. The standout feature is built-in ECC (Error Correcting Code), which automatically detects and corrects single-bit memory errors, making it ideal for servers and workstations where data integrity is critical.
This memory is not for typical consumer desktops; it requires a motherboard and CPU that support ECC DDR5. Compatible platforms include Intel's W680 chipset and AMD's Ryzen Pro series, targeting professional and enterprise environments. Positioned as an entry-to-mid-range workstation memory solution, it offers a balance of reliability and cost-effectiveness.

Compatibility Guide

This module uses the standard DDR5 UDIMM form factor (288-pin DIMM). However, to leverage ECC functionality, the motherboard and CPU must explicitly support ECC DDR5. Examples of compatible platforms include Intel W680-based boards (e.g., ASUS Pro WS W680-ACE) and AMD Ryzen Pro 7000 series systems. Consumer chipsets like Intel Z790 or AMD B650 typically do not support ECC, so verify your motherboard's specifications before purchase.
The memory runs at 4800 MT/s, but the system may downclock if the platform's maximum supported speed is lower. The 2Rx8 configuration may impose frequency limitations when populating all four slots on some motherboards. Operating voltage is standard 1.1V, requiring no special power adjustments.

Product Info

Crucial DDR5 ECC UDIMM 32GB is manufactured under Micron's stringent quality controls. It became available around 2023 through Crucial's official channels and major PC component retailers. Crucial typically offers a limited lifetime warranty, though terms may vary by region and seller.
In the market, this product sits at the entry-to-mid tier for workstation memory. While priced higher than non-ECC consumer DDR5, the added reliability justifies the cost for users who cannot tolerate data corruption.

Best Use Cases

  • Database administrators and virtualization hosts: ECC memory automatically corrects bit errors, reducing the risk of data corruption in long-running server environments. With 32GB capacity and 4800 MT/s speed, this module handles moderate database workloads effectively. For larger memory pools (128GB+), consider purchasing multiple sticks.
  • Creative professionals building workstations: Tasks like video editing and 3D rendering can suffer catastrophic failures from memory errors. This single-pack 32GB module allows incremental upgrades. However, for pure gaming, non-ECC memory with higher speeds offers better price-to-performance.
  • Home lab enthusiasts prioritizing reliability: Running NAS or microservers at home benefits from ECC memory's data integrity features. This Crucial module provides professional-grade reliability at a reasonable cost. Just ensure your motherboard supports ECC before buying.

Things to Consider

ECC functionality is not guaranteed on all DDR5 motherboards. Consumer chipsets (Intel Z790, AMD B650) often lack ECC support, even if the memory physically fits. Always check the motherboard's official spec sheet for "ECC DDR5 support."
The 2Rx8 configuration may cause frequency drops when all four DIMM slots are populated. For maximum capacity, a 2-stick (dual-channel) 64GB setup is recommended over 4 sticks.
Competitors include Samsung and SK hynix equivalents, but Crucial's direct relationship with Micron ensures consistent quality. Pricing is competitive, and availability is generally good through major retailers.

FAQ

Q: Can I use this memory in a consumer desktop like a Core i7-13700K with Z790 motherboard?
A: Physically yes, but ECC will not function. Some boards may fail to boot with ECC modules. For consumer builds, stick with non-ECC DDR5.
Q: Is one 32GB stick better than two 16GB sticks for performance?
A: Two 16GB sticks in dual-channel offer double the memory bandwidth. However, if you plan to upgrade to 64GB later, starting with one 32GB stick provides an easier upgrade path.
Q: Can I mix ECC and non-ECC memory?
A: Not recommended. Mixing may cause system instability or disable ECC entirely. Always use identical ECC modules for reliable operation.

Product Disclosure (Amazon)

  • Manufacturer: Crucial(クルーシャル)
  • Seller: GlassOnion Shop
  • Fulfilled by: GlassOnion Shop
  • ASIN: B0C316G51N
  • Note: This article covers a manufacturer-made product based on Amazon listing details.