What kind of module is the 4X77A81442?

A 64GB 2Rx4 RDIMM-A, DDR5 4800MT/s, ECC.

Is it listed for SR675 V3?

Yes, along with the SR675i V3, SR645 V3, SR665 V3, SR635 V3 and SR655 V3.

Lenovo ThinkSystem 64GB DDR5 4800MT/s 2Rx4 RDIMM-A

Name: Lenovo ThinkSystem 64GB DDR5 4800MT/s 2Rx4 RDIMM-A
Brand: Lenovo
SKU: 4X77A81442

MPN4X77A81442

The Lenovo ThinkSystem 4X77A81442 is a 64GB 2Rx4 RDIMM-A at DDR5 4800MT/s with ECC, listed for SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and Neptune nodes.

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Lenovo ThinkSystem 64GB DDR5 4800MT/s 2Rx4 RDIMM-A

4X77A81442 · Refurbished · 1 year warranty

Quantity (units)

Overview

The Lenovo ThinkSystem 4X77A81442 is an RDIMM-A module offering 64GB in a 2Rx4 layout at DDR5 4800MT/s with ECC. The RDIMM-A marking is a variant label, so compare it with the full part number when you match modules already installed. ECC support corrects single-bit errors during operation.

Compatibility is wide. It lists the ThinkSystem SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, as well as the SD665 V3 Neptune DWC and SD665-N V3 Neptune DWC nodes. The feature code is BQ36.

Offers on file: new and refurbished with a choice of 1 year or 3 years of warranty, and used with 90 days. Send us the number of modules you need and your server model and we will reply with pricing.

Specifications

Lenovo 4X77A81442 specifications
Manufacturer part number	4X77A81442
Brand	Lenovo
ECC	Yes
Rank / organization	2Rx4
Speed	4,800 MT/s
Capacity	64 GB
Memory type	DDR5
Module type	RDIMM
Feature code	BQ36
Module variant	RDIMM-A
Compatible systems	Lenovo ThinkSystem / System x: SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, SD665 V3 Neptune DWC, SD665-N V3 Neptune DWC

Specifications from the manufacturer's datasheet ↗

Compatibility

The manufacturer lists this part for:

Lenovo ThinkSystem / System x: SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, SD665 V3 Neptune DWC, SD665-N V3 Neptune DWC

Not sure it fits? Add your system model to the message in your request and we will check before you order.

FAQ

What kind of module is the 4X77A81442?: A 64GB 2Rx4 RDIMM-A, DDR5 4800MT/s, ECC.
Is it listed for SR675 V3?: Yes, along with the SR675i V3, SR645 V3, SR665 V3, SR635 V3 and SR655 V3.
Which water-cooled nodes are listed?: SD665 V3 Neptune DWC and SD665-N V3 Neptune DWC.
What is the feature code?: BQ36.