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LRDIMM – High-Performance Load Reduced DIMM for Maximum Memory Capacity

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LRDIMM (Load Reduced DIMM) is a specialized type of server memory that uses an integrated buffer (Isolation Memory Buffer) to reduce the electrical load on the memory controller, enabling higher memory capacities and stable signal transmission. LRDIMMs are primarily used in enterprise servers where large volumes of data must be processed efficiently while maintaining high system stability. They are particularly important in virtualization, cloud environments, and data-intensive applications, making them a key component for scalable IT infrastructures. If you are looking for high-performance server RAM for demanding workloads, LRDIMM is a suitable choice – discover compatible LRDIMM modules for your server environment now at Server-Hardware.com.
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Samsung

M321R2GA3EB0-CWM Samsung 1x16GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €843.40 €906.88 for 1 piece

Kingston

KSM32RD4/64MFR Kingston 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €987.40 €1,061.68 for 1 piece

Kingston

KSM56R46BD8-32HA Kingston 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,437.90 €1,546.06 for 1 piece

Samsung

M393A2K43CB2-CTD Samsung 1x16GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €377.20 €419.07 for 1 piece

Kingston

KSM56R46BD8-32MD Kingston 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,311.10 €1,409.74 for 1 piece

Samsung

M321R4GA3EB2-CCP Samsung 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,528.40 €1,643.44 for 1 piece

Micron

MTC20F2085S1RC48BA1 Micron 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,391.90 €1,496.64 for 1 piece

Micron

MTC40F2046S1RC56BD1R Micron 1x64GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €2,802.80 €3,013.69 for 1 piece

Samsung

M393A4K40DB2-CVF Samsung 1x32GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €643.20 €691.60 for 1 piece

Kingston

KSM32RD4/64HCR Kingston 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €982.30 €1,056.17 for 1 piece

Micron

MTC20F1045S1RC56BD1R Micron 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €580.80 €645.24 for 1 piece

Crucial

MTC20F2085S1RC64BD2R Crucial 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,556.70 €1,673.82 for 1 piece

Samsung

M386A8K40CM2-CVF Samsung 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €764.30 €821.79 for 1 piece

Samsung

M393A8G40CB4-CWE Samsung 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €1,103.90 €1,186.96 for 1 piece

Samsung

M321R8GA0EB2-CCP Samsung 1x64GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €2,628.00 €2,825.78 for 1 piece

Kingston

KSM56R46BD8PMI-32MDI Kingston 1x32GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €1,179.30 €1,268.06 for 1 piece

Samsung

M393A8G40AB2-CWE Samsung 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €1,109.70 €1,193.22 for 1 piece

Kingston

KTH-PL426/32G Kingston 1x32GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €663.10 €712.95 for 1 piece

Samsung

M393A4K40CB1-CRC Samsung 1x32GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €441.20 €490.21 for 1 piece

Samsung

M321R8GA0PB0-CWM Samsung 1x64GB DDR5 RDIMM ECC RAM

In stock

Bulk pricing from €2,941.40 €3,162.70 for 1 piece

Kingston

KSM32RS4/32HCR Kingston 1x32GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €512.40 €569.29 for 1 piece

Micron

MTA36ASF8G72PZ-3G2F1 Micron 1x64GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €1,062.50 €1,142.45 for 1 piece

Kingston

KTL-TS426/32G Kingston 1x32GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €555.00 €616.64 for 1 piece

Samsung

M393AAG40M32-CAE Samsung 1x128GB DDR4 RDIMM ECC RAM

In stock

Bulk pricing from €2,084.40 €2,241.25 for 1 piece

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Frequently Asked Questions about LRDIMMS:

With LRDIMM, the memory controller primarily communicates with the iMB instead of directly with the memory chips. This reduces signal load and enables a more stable memory architecture.

For optimal performance, memory channels should be populated evenly. A symmetrical distribution of LRDIMM modules improves system bandwidth and stability.

A Load Reduced DIMM uses an Isolation Memory Buffer (iMB) that processes data, address, and control signals. This reduces the electrical load on the memory controller, enabling higher memory densities per system.

LRDIMMs may consume slightly more power due to the additional buffer logic. At the same time, they enable higher memory density, which can reduce the total number of servers required.

Due to the additional buffer, latency can be slightly higher compared to simpler memory solutions. In practice, however, this is often offset by the higher overall capacity and improved scalability.

What is LRDIMM (Load Reduced DIMM)?

An LRDIMM (Load Reduced DIMM) is a type of server RAM that optimizes signal processing using an additional buffer and reduces the load on the memory controller. This allows higher total memory capacities and stable full population without significantly impacting stability or performance. The goal of LRDIMM is:

  • Higher memory density: More RAM per server
  • Stable signal transmission: Reduced electrical load
  • Optimal scalability: Ideal for large server environments

How does LRDIMM work?

LRDIMM uses an Isolation Memory Buffer (iMB), positioned between the memory chips and the memory controller. It processes data, address, and control signals, reducing the electrical load on the system. This results in the following advantages:

  • High capacity per channel: Increased system density
  • Larger total capacity: Multiple terabytes of RAM possible
  • Consistent performance: Stable even at full population

Advantages of LRDIMM

LRDIMM offers key benefits for modern server environments:

  • Maximum memory capacity: Significantly higher RAM configurations
  • Stable performance: Reliable under heavy workloads
  • Improved signal integrity: Fewer operational errors
  • Optimized for virtualization: More VMs per server
  • Efficient resource utilization: Better overall system usage

LRDIMM vs RDIMM vs UDIMM – Comparison

Memory Type Capacity Performance Use Case
LRDIMM (Load Reduced DIMM) Very high Stable under high load Enterprise servers, cloud, virtualization
RDIMM Medium to high Often lower latency Servers, workstations
UDIMM Low Standard Desktop systems
  • LRDIMM offers advantages over RDIMM when maximum memory capacity is required.
  • RDIMM is suitable for moderate RAM requirements with a focus on lower latency or cost.
  • UDIMM is not designed for professional server environments.

LRDIMM vs RDIMM – Which server RAM is better?

Compared to RDIMM, LRDIMM provides higher memory density due to greater electrical load reduction. This enables larger memory configurations to operate reliably. Buying guide:

  • High scalability & large RAM requirements → LRDIMM
  • Smaller systems or cost focus → RDIMM

LRDIMM vs UDIMM – Key differences

LRDIMM is designed for enterprise servers, while UDIMM is used in desktop systems. For professional applications, LRDIMM is clearly the better choice:

  • LRDIMM: High capacity, ECC, optimized signal processing
  • UDIMM: Lower capacity, not optimized for servers

LRDIMM use cases

LRDIMMs are used in various performance-intensive scenarios:

  • Data centers: High memory density for scalable systems
  • Virtualization: More virtual machines per server
  • Databases: Fast access to large data volumes
  • HPC: Suitable for compute-intensive applications
  • In-memory analytics: Real-time data processing

LRDIMM compatibility

Important limitations must be considered when using LRDIMM:

  • Cannot be combined with RDIMM or UDIMM
  • Only compatible with supported server platforms
  • Depends on CPU and motherboard
  • We recommend checking compatibility before use.

LRDIMM performance and capacity

LRDIMM enables high memory capacities in modern server systems:

  • High bandwidth: Fast data processing
  • Scalability: Multiple terabytes of RAM possible
  • Stable performance: Consistent output under heavy load

When should LRDIMM be used?

LRDIMM is recommended when:

  • Maximum RAM capacity is required
  • High memory density is needed
  • High system utilization is expected
  • Ideal for large server infrastructures
  • Suitable for virtualization and cloud
  • Suitable for data-intensive applications
  • A scalable memory solution is required

Our tip: If requirements are lower, RDIMM may be the better choice. A detailed evaluation is recommended.

Buying LRDIMM – Selection guide

When purchasing LRDIMM, consider the following:

  • Compatibility with server and CPU
  • Appropriate capacity and memory architecture
  • Your workload requirements
  • Proper configuration ensures stable performance and system efficiency.

Why buy LRDIMM from Server-Hardware?

If you have questions about selection or compatibility, our experts are available to assist you and help configure the optimal memory solution for your infrastructure.

  • ISO9001-certified quality: Verified processes and products
  • 24/7 support: Technical assistance available anytime
  • B2B conditions: Attractive pricing for businesses
  • Fast delivery: Reliable shipping
  • Extended warranty: Up to 6 years of protection

Benefit from high-performance server RAM and optimize your infrastructure sustainably – buy LRDIMM now and discover the right modules!