Western Digital

WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD DRIVE B457950

Name: WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD DRIVE B457950
Brand: Western Digital
SKU: B00UNW3K3O

Bottom line: The WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD is a specs-and-price decision rather than a crowd-consensus one in the drives & media 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 2026-10-20

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

WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD DRIVE B457950

SpecPicks Verdict

SpecPicks scored WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD… using a rating × review-volume × price-fit model applied to published specs and reviews across the drives & media category. Western Digital's drives & media 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 drives & media 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

Brand	Western Digital
Form Factor	3.5-inch
Mfr Part Number	B457950-WDAC21000-00H
Number of Items	1
Special Feature	Portable
Compatible Devices	Desktop
Additional Features	Portable
Hard Disk Interface	IDE
Hard Disk Description	Ide
Hard Disk Form Factor	3.5 inches
Hardware Connectivity	IDE

Ready to buy?

WESTERN DIGITAL WDAC21000-00H CAVIAR 21000 3.5IN 1.08GB IDE HARD DRIVE B457950 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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