Lenovo 96GB DDR5-5600 ECC Registered DIMM — 4X77A88058

The Lenovo 4X77A88058 is a 96GB DDR5-5600 (PC5-44800) ECC Registered DIMM operating at 1.1V with CL46 latency in a dual rank x4 configuration. Leveraging 24Gb die technology to achieve 96GB in a single DIMM, it delivers maximum per-slot DDR5 capacity with ECC reliability for Lenovo ThinkSystem servers requiring the highest memory density.

Key Features

• 96GB DDR5-5600 (PC5-44800) — ultra-high capacity server RDIMM using 24Gb die
• ECC Registered (RDIMM) — error correction and signal buffering
• Dual Rank x4 — optimized for high-capacity per DIMM slot
• 1.1V operating voltage
• CL46 latency
• 288-pin DIMM — DDR5 server memory interface
• Validated for Lenovo ThinkSystem servers

Product Specifications

• Part Number: 4X77A88058
• Manufacturer: Lenovo
• OEM Status: OEM Lenovo ThinkSystem
• Capacity: 96GB
• Speed: DDR5-5600 (PC5-44800)
• Type: ECC Registered DIMM (RDIMM)
• Form Factor: 288-Pin DIMM
• Voltage: 1.1V
• CAS Latency: CL46
• Rank: Dual Rank x4

Memory Specifications

• Capacity: 96GB
• DDR Generation: DDR5
• Speed: 5600MHz (PC5-44800)
• CAS Latency: CL46
• Voltage: 1.1V
• ECC: Yes
• Buffered: Registered (RDIMM)
• Rank: Dual Rank x4
• Die Density: 24Gb
• Form Factor: 288-Pin DIMM

Performance Specifications

• Bandwidth: Up to 44,800 MB/s (PC5-44800)
• Operating Temperature: 0°C to 85°C

Use Cases

• Maximum memory density configurations in Lenovo ThinkSystem DDR5 servers
• Large-scale AI inference requiring maximum per-server memory
• In-memory databases (SAP HANA, Oracle) requiring high memory capacity
• High-density virtualization with maximum VM memory per server

Compatibility

• Lenovo ThinkSystem servers supporting DDR5-5600 96GB RDIMM (24Gb die)
• Verify platform support for 96GB DIMMs from Lenovo's ThinkSystem compatibility matrix
• Not compatible with DDR4 slots or consumer platforms

Frequently Asked Questions

Why is this 96GB instead of 64GB or 128GB?

The 96GB capacity uses 24Gb die technology in a 2Rx4 configuration (2 ranks × 4 chips per rank × 24Gb = 96GB). This is a newer DDR5 capacity point enabled by higher-density NAND die, sitting between 64GB and 128GB.

Is 96GB RDIMM supported on all DDR5 ThinkSystem servers?

Not all DDR5 platforms support 96GB DIMMs. Verify from Lenovo's ThinkSystem memory configuration guide that your specific server model supports 96GB 24Gb-die RDIMMs.

Is this compatible with non-Lenovo servers?

This is an OEM Lenovo ThinkSystem RDIMM validated for ThinkSystem servers. Compatibility with non-Lenovo servers is not guaranteed.

The Lenovo 4X77A88058 delivers 96GB of DDR5-5600 ECC Registered server memory in a dual rank x4 configuration using 24Gb die — the ultra-high capacity RDIMM for Lenovo ThinkSystem DDR5 servers requiring maximum per-slot memory density.