IBM

IBM - IBM 09P0491 512MB DIMM

Name: IBM - IBM 09P0491 512MB DIMM
Brand: IBM
SKU: B004572372

Bottom line: The IBM - IBM 09P0491 512MB DIMM is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ 512 MB DIMM (200 PIN 10NS SDRAM)

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Used and vintage listings vary by seller and condition — check the listing photos, description and return terms before buying

Manufacturer description

00P5767 512MB 208p PC2100 CL2.5 18c 64x4

SpecPicks Verdict

SpecPicks scored IBM - IBM 09P0491 512MB DIMM using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. IBM's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

512 MB DIMM (200 PIN 10NS SDRAM)

Full Specifications

Brand	IBM
RAM Size	512 MB
Form Factor	DIMM
Model Number	00P5767
Number of Pins	200
Mfr Part Number	00P5767
Special Feature	Lightweight
Additional Features	Lightweight
Computer Memory Size	512 MB
RAM Memory Technology	sdram

Ready to buy?

IBM - IBM 09P0491 512MB DIMM is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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