Cisco UCS Server Memory (RAM) Upgrades

Looking for Cisco UCS compatible server RAM with fast EU delivery? CoreWave Labs offers enterprise-grade RDIMM, LRDIMM, and UDIMM modules for Cisco UCS platforms, built with Tier-1 components from Samsung, SK Hynix, and Micron—the same trusted brands used by Cisco. Every module meets JEDEC standards for compatibility and performance. We ship across Europe with typical dispatch times of 1–7 days. Upgrade with confidence—high-reliability memory without the OEM price tag.

Find Your Cisco RAM Upgrade

Form Factor
Form Factor
Memory Size
Memory Size
Memory Speed
Memory Speed
Organization
Organization
Memory Voltage
Memory Voltage
Brand
Brand
PicturePart NumberBrandSizeSpeedForm FactorPrice
M393A2K40DB3-CWE Samsung 16GB DDR4-3200 ECC RDIMM Server Memory
Samsung16GBDDR4-3200RDIMM

64.00 

M393A2K40EB3-CWE Samsung 16GB DDR4-3200 ECC RDIMM Server Memory
Samsung16GBDDR4-3200RDIMM

58.00 

M393A2K40DB2-CVF Samsung 16GB DDR4-2933 ECC RDIMM Server Memory
Samsung16GBDDR4-2933RDIMM

56.00 

M393A2K43CB2-CVF Samsung 16GB DDR4-2933 ECC RDIMM Server Memory
Samsung16GBDDR4-2933RDIMM

56.00 

M393A2K40CB2-CVF Samsung 16GB DDR4-2933 ECC RDIMM Server Memory
Samsung16GBDDR4-2933RDIMM

56.00 

M393A2K43DB2-CVF Samsung 16GB DDR4-2933 ECC RDIMM Server Memory
Samsung16GBDDR4-2933RDIMM

56.00 

M391A1K43DB2-CWE Samsung 8GB DDR4-3200 ECC RDIMM Server Memory
Samsung8GBDDR4-3200RDIMM

54.00 

M393A1K43DB2-CWE Samsung 8GB DDR4-3200 ECC RDIMM Server Memory
Samsung8GBDDR4-3200RDIMM

37.00 

M393A2K43CB2-CTD Samsung 16GB DDR4-2666 ECC RDIMM Server Memory
Samsung16GBDDR4-2666RDIMM

20.00 

M393A2G40EB2-CTD Samsung 16GB DDR4-2666 ECC RDIMM Server Memory
Samsung16GBDDR4-2666RDIMM
M386AAK40B40-CUC Samsung 128GB DDR4-2400 ECC LRDIMM Server Memory
Samsung128GBDDR4-2400LRDIMM
M393A1K43DB1-CVF Samsung 8GB DDR4-2933 ECC RDIMM Server Memory
Samsung8GBDDR4-2933RDIMM
M386A4G40DM1-CRC Samsung 32GB DDR4-2400 ECC LRDIMM Server Memory
Samsung32GBDDR4-2400LRDIMM
M393A2K43BB1-CRC Samsung 16GB DDR4-2400 ECC RDIMM Server Memory
Samsung16GBDDR4-2400RDIMM
M386AAG40MM2-CVF Samsung 128GB DDR4-2933 ECC LRDIMM Server Memory
Samsung128GBDDR4-2933LRDIMM
M386A4G40EM2-CRC Samsung 32GB DDR4-2400 ECC LRDIMM Server Memory
Samsung32GBDDR4-2400LRDIMM
M393A2G40EB1-CPB Samsung 16GB DDR4-2133 ECC RDIMM Server Memory
Samsung16GBDDR4-2133RDIMM
M393A2K40CB2-CTD Samsung 16GB DDR4-2666 ECC RDIMM Server Memory
Samsung16GBDDR4-2666RDIMM
M386A8K40CM2-CRC Samsung 64GB DDR4-2400 ECC LRDIMM Server Memory
Samsung64GBDDR4-2400LRDIMM
M386A8K40BMB-CRC Samsung 64GB DDR4-2400 ECC LRDIMM Server Memory
Samsung64GBDDR4-2400LRDIMM

Need Help Choosing the Right RAM?

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Browse RAM by Cisco Server Models

Access configuration details and matching modules to boost your server’s performance.

Manufactured by Industry Leaders

We offer memory modules manufactured by Samsung, SK Hynix, or Micron— the very same industry‐leading suppliers Cisco relies on. This ensures each module meets high standards for performance, compatibility, and reliability, giving you genuine, Cisco‐equivalent quality at a competitive price.

Samsung logo – manufacturer of server memory modules
SK Hynix logo – premium DDR4 and DDR5 memory manufacturer
Micron logo – trusted supplier of server-grade RAM

Cisco Server Memory FAQs

What type of RAM is compatible with Cisco UCS servers?

Cisco UCS servers typically use RDIMM or LRDIMM modules meeting JEDEC standards. Always verify memory type and speed for your specific UCS model.

Can I mix RDIMM and LRDIMM memory in a Cisco UCS server?

No. Cisco servers require either all RDIMM or all LRDIMM modules. Mixing types can cause performance or boot issues.

Can I mix memory sizes or speeds in my Cisco server?

Yes, you can mix different memory sizes or speeds, but your server generally defaults to the lowest speed. Each module’s full capacity is typically recognized, but mixing can disrupt optimal performance. For best results, install identical modules (same size, speed, and type).

Do Cisco servers require ECC memory?

Yes, most enterprise‐grade Cisco servers rely on ECC (Error‐Correcting Code) memory to detect and correct data errors, ensuring reliability in mission‐critical environments. In fact, ECC is standard in many enterprise server deployments because it helps minimize data corruption and system downtime.

How many DIMMs should I install per CPU in my Cisco server?

The ideal number depends on your server model and workload. For best performance, follow channel balancing and optimal population guidelines—usually specified in your server’s documentation. Distributing DIMMs evenly across memory channels helps maximize throughput, efficiency, and overall system stability.

Can I upgrade my Cisco server’s memory without affecting its warranty?

Yes. Most manufacturers allow memory upgrades as long as you use modules that meet the server’s official specifications. Check your Cisco server manual for approved speeds, capacities, and ECC requirements.

What are the benefits of upgrading Cisco server memory?

Increasing memory capacity and speed can boost data transfer rates, support more virtual machines, and reduce bottlenecks in data‐intensive workloads.

How fast can I receive Cisco-compatible memory across Europe?

CoreWave Labs offers fast dispatch in 1–7 days for Cisco-compatible memory modules across Europe.

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