Upgrade your Dell PowerEdge T420 RAM

Upgrade your Dell PowerEdge T420 server with high-quality, compatible RAM to boost your system's performance and reliability. Whether you're looking to increase memory capacity for handling resource-intensive applications, enhance speed for faster data processing, or ensure consistent performance in demanding environments, our memory modules are precisely designed to meet your server's specific requirements. With options for RDIMM and UDIMM you can select the optimal configuration to maximize your server's performance, maintain compatibility, and ensure operational efficiency.

Dell PowerEdge T420 Memory Configuration

Below are the memory configuration details for the Dell PowerEdge T420. Review the supported slots, memory capacities, and compatible speeds to find the best match for your requirements.

Specification

Details

RAM Slots

12 DIMMs

Supported Memory Types

RDIMM, UDIMM

Maximum Memory Size

RDIMM: 384GB (12 x 32 GB) and UDIMM: 96GB (12 × 8GB)

Maximum Memory Speed

DDR3-1600

Supported Memory Speed

DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866 (will clock down)

Supported DIMMs

RDIMM: 2GB to 32GB, UDIMM: 2GB to 8GB

Need more details? Explore the Dell PowerEdge T420 Technical Guide for in-depth specifications and insights.

Find Your Dell PowerEdge T420 RAM Upgrade

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Memory Size
Memory Size
Memory Speed
Memory Speed
Organization
Organization
Memory Voltage
Memory Voltage
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PicturePart NumberBrandSizeSpeedForm FactorPrice
A6761613 Dell 16GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A7134886 Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A6994465 Dell 16GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A7545680 Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A7515505 Dell 16GB DDR3-1600 ECC RDIMM Compatible Server Memory
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SNPPKCG9C/8G Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A8255125 Dell 16GB DDR3-1600 ECC RDIMM Compatible Server Memory
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RKR5J Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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SNP20D6FC/16G Dell 16GB DDR3-1600 ECC RDIMM Compatible Server Memory
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SNPRKR5JC/8G Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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A7990613 Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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SNPRVY55C/8G Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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Dell8GBDDR3-1600RDIMM
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A6761616 Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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Dell8GBDDR3-1600RDIMM
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A6994455 Dell 8GB DDR3-1600 ECC RDIMM Compatible Server Memory
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M393B2G70CB0-YK0 Samsung 16GB DDR3-1600 ECC RDIMM Server Memory
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M393B2G70BH0-YK0 Samsung 16GB DDR3-1600 ECC RDIMM Server Memory
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M393B2G70DB0-YK0 Samsung 16GB DDR3-1600 ECC RDIMM Server Memory
M393B2G70DB0-YK0
Samsung16GBDDR3-1600RDIMM
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M393B2G70EB0-YK0 Samsung 16GB DDR3-1600 ECC RDIMM Server Memory
M393B2G70EB0-YK0
Samsung16GBDDR3-1600RDIMM
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M393B2G70QH0-YK0 Samsung 16GB DDR3-1600 ECC RDIMM Server Memory
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Manufactured by Industry Leaders

We offer memory modules from Samsung, SK Hynix, and Micron—the same trusted manufacturers behind high-performance computing solutions worldwide. Each module meets strict standards for performance, compatibility, and reliability, ensuring enterprise-grade quality at a competitive price.

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Dell PowerEdge T420 Memory FAQ

This Dell PowerEdge T420. Memory FAQ covers the most common questions about memory configuration, types, speeds, and installation tips to help you optimize your server performance.

What Types of RAM Are Supported in the Dell PowerEdge T420?

  • The Dell PowerEdge T420 supports RDIMM (Registered DIMMs) and UDIMM (Unbuffered DIMMs).

Which Memory Speeds Are Compatible With the Dell PowerEdge T420?

  • The server supports DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866 (will clock down).
  • Keep in mind that if different speeds are mixed, all modules operate at the slowest DIMM speed.

What Is the Maximum Supported RAM Capacity for the Dell PowerEdge T420?

  • Up to 384GB (12 x 32 GB) with RDIMMs.
  • Up to 96GB (12 × 8GB) with UDIMMs.

How do I achieve the best performance for my Dell PowerEdge T420?

  • Populate DIMMs evenly across all channels and use the highest supported speed compatible with your CPU.

What is RDIMM, UDIMM?

  • RDIMM (Registered DIMM): Registered DIMMs are memory modules with an additional register between the memory controller and the DRAM. This register reduces the electrical load on the memory controller, allowing for better stability and scalability in servers. RDIMMs are commonly used in environments that require high reliability and performance.
  • UDIMM (Unbuffered DIMM): Unbuffered DIMMs do not include a register or buffer, meaning they communicate directly with the memory controller. While they offer lower latency compared to RDIMMs and LRDIMMs, UDIMMs are typically used in desktops or workstations rather than servers, as they cannot support high memory capacities or intensive workloads.

General DIMM Population Guidelines for Dell PowerEdge T420

  • Do Not Mix RDIMMs and UDIMMs
  • If mixing memory speeds, all DIMMs will operate at the lowest speed.
  • Install DIMMs starting furthest from the processor.
  • Populate DIMMs evenly across all channels.
  • Ensure all CPUs have memory installed for their DIMM slots to function.

Dell PowerEdge T420 Memory Installation Steps

  • Power Off the server and disconnect it from power.
  • Wear ESD Gear: Use an ESD wrist strap and work in an ESD-safe environment.
  • Open the server and locate the DIMM slots.
  • Inspect the slots for dust or debris and ensure proper alignment of the DIMMs.
  • Follow the DIMM population order in the server manual.
  • Firmly insert DIMMs until they click. Avoid using excessive force.
  • Close the server and reconnect power.
  • Verify the memory configuration in the BIOS.

Still have questions about upgrading your Dell PowerEdge T420 memory? Contact us for advice or request a quote for compatible memory modules.

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