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Green rectangular memory module with gold connectors and black chips

Lenovo

Lenovo 7X77A01305 64 GB DDR4 LRDIMM 288-pin 2666 MHz ECC memory upgrade

SKU CH-V848-1GY7V MPN 7X77A01305

A 64 GB DDR4 LRDIMM running at 2666 MHz with ECC for ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650, SR850, SR860 and SR950 servers

  • 64 GB LRDIMM capacity runs more virtual machines
  • 2666 MHz DDR4 speed accelerates server applications
  • ECC protection maintains data integrity under load
  • 2 V operation reduces power draw per module
  • Compatible with ThinkSystem SR and SN series servers

Lenovo 64 GB DDR4 LRDIMM 288-pin

This Lenovo memory module delivers 64 GB of DDR4 capacity in a load-reduced ECC form factor. It operates at 2666 MHz with a PC4-21300 rating and runs at 1.2 V. The part is designed for specific ThinkSystem servers including the SN850, SR530, SR550, SR570, SR590, SR630, SR650, SR850, SR860 and SR950.

Build quality and connector implications

The 288-pin LRDIMM layout reduces electrical load on the memory bus, allowing higher densities per channel than standard RDIMMs. ECC circuitry detects and corrects single-bit errors to protect data integrity in mission-critical workloads. The 1.2 V operating voltage aligns with DDR4 power-efficiency targets for dense server deployments.

Upgrade context and when it matters

This module replaces lower-capacity DDR4 RDIMMs or LRDIMMs to expand total system memory without adding servers. The jump is worthwhile when virtualization, in-memory databases or large-scale analytics exceed current RAM limits and cause swapping. Buyers who need registered DIMMs instead of load-reduced variants, or who require speeds beyond 2666 MHz, should verify platform support before purchasing.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,471.99
Pricier than about 64% of the 21,161 comparable items (median $397.99).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLenovo
Model nameLED TV
Size & build
Shipping weight0.91 kg
Package size157 × 57 × 16 mm

Questions about this item

What does the DDR4 2666 MHz PC4-21300 interface cap in practice?

The module runs at 2666 MHz with a PC4-21300 bandwidth rating; actual throughput depends on the server's memory controller and populated DIMM slots.

What physical slot and form factor does the 288-pin LRDIMM require?

It fits a standard 288-pin DDR4 DIMM slot; the load-reduced design does not change the keying or height compared with a regular RDIMM.

How is the module installed, and which step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify in the BIOS that all 64 GB are recognised at 2666 MHz.

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