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Green rectangular memory module with gold contacts and black chips

Lenovo

Lenovo 4X77A88512 32GB DDR5 4800MHz ECC UDIMM server accessory

SKU CH-0V3F-8X3D0 MPN 4X77A88512

32GB DDR5 ECC UDIMM running at 4800MHz with 288-pin unbuffered design for server stability

  • TypeDDR5
  • 32 GB capacity supports heavy multi-tasking workloads
  • 4800 MHz DDR5 speed keeps applications running smoothly
  • ECC protection detects and corrects memory errors
  • Dual-rank 2Rx8 organisation increases memory density per slot
  • 288-pin UDIMM form factor fits compatible server boards

Server memory module

Lenovo 4X77A88512 is a 32 GB DDR5 4800 MHz ECC UDIMM designed for ThinkSystem servers. It uses dual-rank 2Rx8 organisation and 288-pin unbuffered DIMM layout with TruDDR5 validation for platform compatibility.

Suited for capacity upgrades

This module fits administrators expanding memory in supported Lenovo servers that accept unbuffered ECC DDR5. It is not for systems requiring registered or load-reduced DIMMs, nor for consumer desktop platforms that lack ECC support.

Build integration

The 288-pin DIMM installs directly into compatible server slots without buffering overhead. It frees registered DIMM slots for higher-density modules while delivering error-correcting protection for critical workloads.

Highlights

  • 32 GB capacity supports heavy multi-tasking workloads
  • 4800 MHz DDR5 speed keeps applications running smoothly
  • ECC protection detects and corrects memory errors
  • Dual-rank 2Rx8 organisation increases memory density per slot
  • 288-pin UDIMM form factor fits compatible server boards

Specifications

TypeDDR5
Shipping weight0.45 kg
Package size127 × 25 × 25 mm

Questions about this item

Does this 288-pin UDIMM require a motherboard with DDR5 slots and ECC support?

Yes, the module is a 288-pin DDR5 UDIMM with ECC, so the board must provide DDR5 memory slots and enable ECC in the BIOS for the 32 GB stick to function correctly.

Will this 32 GB dual-rank module work in a system that already has single-rank DDR5 DIMMs installed?

The 2Rx8 dual-rank module can populate the same DDR5 channel as single-rank sticks, but the memory controller will run all modules at the lowest common speed and rank configuration supported by the platform.

How can I confirm the module is running at 4800 MHz with ECC active after installation?

Check the BIOS memory information or use a tool such as dmidecode or CPU-Z; they will report the configured speed as 4800 MHz, the data width as 2Rx8, and show ECC status as enabled.

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