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Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU

Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU

By SpecPicks Editorial · Verified 2026-07-07

$98.95
Buy on Amazon — $98.95 Compare to similar retro motherboards

*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.

Bottom line: The Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU is a niche pick — read recent reviews before buying in the retro motherboards category, priced around $98.95. Read recent reviews carefully before committing.

You can definitely improve your PC's performance with a faster CPU!! This Intel Pentium 4 CPU runs at 2.66 GHz, has a 533 MHz bus speed and 512 KB cache!! Get this Socket 478 CPU today!!

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SpecPicks Verdict

SpecPicks classifies Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU as a niche pick — read recent reviews before buying in the retro motherboards category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for retro motherboards 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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

  • ✓ 533 MHz system bus 512 KB L2 cache
  • ✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

  • Intel Pentium 4 2.66 GHz Socket 478 CPU General Features: 2.66 GHz clock speed FC-PGA2 478-pin packa
  • 533 MHz system bus 512 KB L2 cache

Full Specifications

BrandIntel
CPU ModelPentium
CPU Speed2.66 GHz
CPU SocketSocket 478
Model NumberRK80532PE067512
Mfr Part NumberRK80532PE067512
Processor BrandIntel
Processor Count1
Processor Speed2.66 GHz
Secondary Cache0.51 MB
CPU ManufacturerIntel
Processor SeriesPentium
Processor SocketSocket 478

Ready to buy?

Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.

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Intel Pentium 4 2.66GHz 533MHz 512KB Socket 478 CPU
$98.95
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