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WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache SATA 6.0Gb/s 3.5 internal hard drive
Western Digital

WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache SATA 6.0Gb/s 3.5 internal hard drive

Bottom line: The WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache SATA ($95.00 on Amazon as of 2026-10-06): SATA 6.0Gb/s interface keeps a 250GB Caviar Blue usable in modern retro builds; main trade-off: 250GB is tiny next to modern drives, so plan on it as a boot or utility disk.

$95.00

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Buy on Amazon — $95.00 Compare to similar drives & media

By , Founder & Editor-in-Chief · Listing data updated

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.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ SATA 6.0Gb/s interface keeps a 250GB Caviar Blue usable in modern retro builds
  • ✓ 7200 RPM spindle speed, faster than the 5400 RPM drives common in this capacity class
  • ✓ 16MB cache helps small-file reads on period-correct XP and Win7 installs
  • ✓ Standard 3.5-inch form factor drops into any desktop bay without an adapter

Cons

  • ✗ 250GB is tiny next to modern drives, so plan on it as a boot or utility disk
  • ✗ Mechanical HDD at 7200 RPM is far slower than any SATA SSD at similar cost
  • ✗ Spinning platters add noise and vibration a silent build will notice
  • ✗ Listing gives no warranty or hours-used detail, so drive health is unknown

Manufacturer description

WD2500AAKX 250 GB SATA DRIVE

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SpecPicks Verdict

SpecPicks scored WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache… 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.

Key Features

  • Western Digital HDD WD2500AAKX-75U6AA0 250GB
  • Western Digital HDD WD2500AAKX-75U6AA0
  • Western Digital WD2500AAKX-75U6AA0
  • WD2500AAKX-75U6AA0
  • WD2500AAKX 75U6AA0

Full Specifications

BrandWestern Digital
ColorBlue
Model NameCaviar Blueu00a0
Form Factor3.5-inch
Media Speed1
Model NumberWD2500AAKX - 9
Built-In MediaInternal Hard Drive
Hard-Drive Size250 GB
Mfr Part NumberWD2500AAKX - 9
Number of Items1
Special FeaturePortable
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate6000 megabytes_per_second
Enclosure MaterialAluminum or Glass
Additional FeaturesPortable
Hard Disk InterfaceSerial ATA
Customer Package TypeStandard Packaging
Hard Disk DescriptionMechanical Hard Disk
Hard Disk Form Factor3.5 inches

Ready to buy?

WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache SATA 6.0Gb/s 3.5 internal hard drive is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $95.00

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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WESTERN DIGITAL WD2500AAKX Caviar Blue 250GB 7200 RPM 16MB cache SATA 6.0Gb/s 3.5 internal hard drive
$95.00
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