What capacity is the 4X77A81444?

256GB, as an 8Rx4 3DS RDIMM-A v2.

Lenovo ThinkSystem 256GB DDR5 4800MT/s 8Rx4 3DS RDIMM-A v2

Name: Lenovo ThinkSystem 256GB DDR5 4800MT/s 8Rx4 3DS RDIMM-A v2
Brand: Lenovo
SKU: 4X77A81444

MPN4X77A81444

The Lenovo ThinkSystem 4X77A81444 is a 256GB 8Rx4 3DS RDIMM-A v2 at DDR5 4800MT/s with ECC, listed for the SR645 V3, SR665 V3, SR635 V3 and SR655 V3.

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Lenovo ThinkSystem 256GB DDR5 4800MT/s 8Rx4 3DS RDIMM-A v2

4X77A81444 · Refurbished · 1 year warranty

Quantity (units)

Overview

The Lenovo ThinkSystem 4X77A81444 stacks DRAM into a 256GB 3DS RDIMM-A module with an 8Rx4 layout, marked v2. Speed is DDR5 at 4800MT/s, with ECC. The 8Rx4 layout means eight ranks of x4 chips on the module.

Only four systems are named: ThinkSystem SR645 V3, SR665 V3, SR635 V3 and SR655 V3. The feature code is BQ3B.

Buyers pick a 256GB module when each socket must hold a very large dataset, and cost is secondary to density. Check platform limits on 3DS modules before you plan the full population, including how they combine with other memory in the same server.

Available new, refurbished and used. New and refurbished units carry 1 year or 3 years of warranty, and used units carry 90 days. Send us the quantity for pricing.

Specifications

Lenovo 4X77A81444 specifications
Manufacturer part number	4X77A81444
Brand	Lenovo
ECC	Yes
Rank / organization	8Rx4
Speed	4,800 MT/s
Capacity	256 GB
Memory type	DDR5
Module type	3DS RDIMM
Feature code	BQ3B
Module variant	RDIMM-A
Compatible systems	Lenovo ThinkSystem / System x: SR645 V3, SR665 V3, SR635 V3, SR655 V3

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

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FAQ

What capacity is the 4X77A81444?: 256GB, as an 8Rx4 3DS RDIMM-A v2.
Which systems are listed?: ThinkSystem SR645 V3, SR665 V3, SR635 V3 and SR655 V3.
What is the feature code?: BQ3B.
What speed does it run at?: DDR5 4800MT/s, with ECC.