What is the 4X77A81443?

A 128GB 4Rx4 3DS RDIMM-A v2, DDR5 4800MT/s, ECC.

Which servers does it list?

SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, plus two Neptune DWC nodes.

Lenovo ThinkSystem 128GB DDR5 4800MT/s 4Rx4 3DS RDIMM-A v2

Name: Lenovo ThinkSystem 128GB DDR5 4800MT/s 4Rx4 3DS RDIMM-A v2
Brand: Lenovo
SKU: 4X77A81443

MPN4X77A81443

The Lenovo ThinkSystem 4X77A81443 is a 128GB 4Rx4 3DS RDIMM-A v2 at DDR5 4800MT/s with ECC, listed for the SR645 V3, SR665 V3, SR635 V3, SR655 V3 and SR675 V3.

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Lenovo ThinkSystem 128GB DDR5 4800MT/s 4Rx4 3DS RDIMM-A v2

4X77A81443 · Refurbished · 1 year warranty

Quantity (units)

Overview

The Lenovo ThinkSystem 4X77A81443 combines the RDIMM-A variant with a 3DS stacked design, giving 128GB in a 4Rx4 module marked v2. It runs DDR5 at 4800MT/s with ECC; no voltage is listed.

Named systems are the ThinkSystem SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, together with the SD665 V3 Neptune DWC and SD665-N V3 Neptune DWC. The feature code is BQ3A.

A 128GB module doubles what a 64GB part gives per slot. It is the natural pick when you want a large memory footprint but have a fixed number of DIMM slots.

We supply it in all three conditions. New and refurbished units come with 1 year or 3 years of warranty, and used units with 90 days. Tell us the server model and the quantity needed and we will reply with pricing and availability.

Specifications

Lenovo 4X77A81443 specifications
Manufacturer part number	4X77A81443
Brand	Lenovo
ECC	Yes
Rank / organization	4Rx4
Speed	4,800 MT/s
Capacity	128 GB
Memory type	DDR5
Module type	3DS RDIMM
Feature code	BQ3A
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 is the 4X77A81443?: A 128GB 4Rx4 3DS RDIMM-A v2, DDR5 4800MT/s, ECC.
Which servers does it list?: SR645 V3, SR665 V3, SR635 V3, SR655 V3, SR675 V3 and SR675i V3, plus two Neptune DWC nodes.
What is the feature code?: BQ3A.
Is it offered used?: Yes, with a 90 day warranty.