M425R1GB4BB0

The M425R1GB4BB0 is a Samsung DDR5 Small Outline DIMM (SO-DIMM) memory module – a complete plug-in memory stick, not a discrete DRAM component. In this datasheet’s ordering table it is the 8GB capacity member of a three-module family built from Samsung’s own 16 Gb DDR5 B-die.

Key figures

• Module capacity: the ordering table prints 8GB for this part number.
• Interface width: the module is x64 (64-bit DDR5, non-ECC SO-DIMM).
• Component composition: the ordering table prints 1Gx16 using K4RAH165VB (16-wide) Samsung DDR5 component dies.
• Ranks: this is the single-rank (1 rank) member; module height 30mm.
• Supply: §2 prints “VDD = VDDQ = 1.1V” and “VPP = 1.8V” for the on-module SDRAM; §7.1 gives the DIMM/PMIC supply requirements.

Complete order code – what the datasheet leaves open

This part number is a module base code. The datasheet’s own ordering table writes it as M425R1GB4BB0 with two suffix fields the manufacturer does not enumerate here: a speed code (CQK = 4800Mbps 40-39-39, WM = 5600Mbps) and a trailing PMIC “bucket” field (the table’s note 1 prints the placeholder as “Bucket field for PMIC Information”, and the revision history names two PMIC options – OD : Renesas PMIC and OL : S.LSI PMIC). The document states that valid order numbers must be confirmed in the manufacturer’s part catalog. So this page presents the module at its base code and does not invent a specific speed-and-PMIC combination – doing so would be manufacturing an orderable number the manufacturer has not published in this document. Resolving the exact orderable codes is tracked as N269.

Operating temperature – deliberately not claimed

§7.2 Recommended Operating Temperature Ranges prints a single row – Industrial Temperature IT, TOPER-IT, -40 to 85 (normal) / 95 (extended) – and its note 4 says “Support for the Industrial Temperature device is TBD”. The document gives no supported commercial operating range as a firm value for this module. So this page publishes no temperature grade or range claim; the Lifecycle and temperature fields are left blank rather than borrowing the TBD industrial row. Tracked as N269.

Lifecycle status

The Lifecycle row above is left blank: the datasheet is a technical specification and prints no product status. We have not verified a reachable per-code Samsung module product page, and third-party retail or distributor listings (which show assorted full codes) are not an acceptable on-page source under this site’s rules. This page makes no Active or End-of-Life claim; the gap is tracked as N269.

Provenance

Every figure above is taken from Samsung DDR5 Small Outline DIMM (SO-DIMM) module datasheet **Rev. 1.6, Mar. 2023** (82 pages · md5 bc3f9e0bbf74a3bc9591c614768cf0df · page footer Rev. 1.6, © 2023 Samsung Electronics Co., Ltd.), a channel-local copy of the manufacturer’s own module datasheet. Its PDF /Info carries no aggregator watermark and it prints SAMSUNG footers with a part-number-level revision history, but it is a CONFIDENTIAL-marked document with no byte-identical public copy verified, so the manufacturer datasheet button is left unpopulated and we do not host the file.

Who makes it

M425R1GB4BB0 is a DDR5 SO-DIMM memory module of Samsung Electronics Co., Ltd. – Samsung’s own module built from Samsung DDR5 component dies (the ordering table names the K4RAH165VB die it carries). The “M425R…” code prefix resembles a Micron-style number, but the document is Samsung’s: the page footers print SAMSUNG, the revision history and component composition reference Samsung’s K4RAH-series dies, and the copyright line is © 2023 Samsung Electronics Co., Ltd.