Technical Snapshot

The ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A is a server-grade DDR5 RDIMM memory module designed for enterprise servers and workstations. Running at 4,800 MT/s, The module provides 16GB of DDR5 memory . this module targets server deployments, virtualization hosts, and high-availability computing environments requiring ECC error correction.

Use Case
Server deployments, virtualization, high-availability computing
Compatibility
RDIMM-compatible server motherboard
Category
DDR5 RDIMM — Lenovo ThinkSystem TruDDR5
LENOVO
Lenovo RAM
Lenovo ThinkSystem TruDDR5

ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A (4X77A81437)

DDR5 · RDIMM · 4,800 MT/s · 16GB

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 4,800 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 16GB
Operating voltage. Higher voltage allows faster speeds but increases power and heat.
Voltage 1.1V
DDR generation. DDR5 offers higher bandwidth and capacity than DDR4, but requires a DDR5-compatible motherboard.
Type DDR5
MPN4X77A81437
EAN0889488625895
CategoryMemory
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Memory Specifications

Memory TypeDDR5
Form FactorRDIMM
Total Capacity16GB
Speed4,800 MT/s
Voltage1.1V
ECCYes

Full Specifications

Data sourced from Lenovo product specifications
Memory
Product LineThinkSystem TruDDR5
Memory TypeDDR5
Form FactorRDIMM
Total Capacity16GB
Module Count1
Module Capacity16GB
Speed4,800 MT/s
Timings & Voltage
Voltage1.1V
ECCYes
Design
IC Typex8
Product
BrandLenovo
MPN4X77A81437
EAN0889488625895
Physical
Weight0.050 kg (estimated)
Package Dimensions14 x 8 x 1 cm (estimated)

Support

Lenovo Memory Compatibility ToolCheck motherboard compatibility for this module
Lenovo Support →
ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A DatasheetPDF · Technical specifications
Lenovo Support →
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Frequently Asked Questions

What systems is this memory compatible with?

The ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A is RDIMM server memory with ECC error correction. It requires a server or workstation motherboard with RDIMM support. NOT compatible with standard desktop motherboards. Check your server's QVL (Qualified Vendor List) for compatibility.

What speed does this memory run at?

The ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A runs at 4,800 MT/s. This is a JEDEC standard speed that works automatically without BIOS configuration.

Can I add more memory later?

Yes, the ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A is a single 16GB module. You can add additional compatible DDR5 RDIMM modules to populate empty slots. For best performance, use matched modules of the same speed and capacity to enable dual-channel mode.

Does this memory support ECC error correction?

Yes, the ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A includes ECC (Error-Correcting Code) support, which detects and corrects single-bit memory errors. This is essential for servers, workstations, and mission-critical applications where data integrity is paramount.

Where can I find technical support?

Visit the Lenovo support website for compatibility tools, firmware updates, and technical documentation for the ThinkSystem 16GB TruDDR5 4800MHz (1Rx8) RDIMM-A.

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MPN: 4X77A81437
Schemas: Product + BreadcrumbList
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Related: 4 isRelatedTo links