IBM

09N4308/33L5039/38L4031-IBM 1GB MEM PC2100 ECC DDR SDRAM

Bottom line: The 09N4308/33L5039/38L4031-IBM 1GB MEM PC2100 ECC DDR SDRAM 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 2026-08-13

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 →

Before you buy

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

ITEM IS CLEAN BULK. For your peace of mind.

SpecPicks Verdict

SpecPicks scored 09N4308/33L5039/38L4031-IBM 1GB MEM PC2100 ECC DDR SDRAM 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.

Full Specifications

ecc	true
speed_mhz	266
capacity_mb	1024
memory_type	DDR ECC
alt_part_numbers	33L5039,38L4031

Ready to buy?

09N4308/33L5039/38L4031-IBM 1GB MEM PC2100 ECC DDR SDRAM 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. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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