Intel

Intel BX80526C1000256 PENTIUM III 1GHz FCPGA 256KB Cache Processor

Name: Intel BX80526C1000256 PENTIUM III 1GHz FCPGA 256KB Cache Processor
Brand: Intel
SKU: B00006MPLK

Bottom line: The Intel BX80526C1000256 PENTIUM III 1GHz FCPGA 256KB Cache Processor is a specs-and-price decision rather than a crowd-consensus one in the retro cpus 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 2026-10-19

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

✓ Item Package Dimension: 7.5L x 6.5W x 2.75H inches

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

Intel Pentium III Processor 1000/133MHz FC-PGA Socket 370 Retail

SpecPicks Verdict

SpecPicks scored Intel BX80526C1000256 PENTIUM III 1GHz FCPGA 256KB Cache Processor using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpus category. Intel's retro cpus 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 retro cpus 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

Item Package Dimension: 7.5L x 6.5W x 2.75H inches
Item Package Weight - 1.0 Pounds
Item Package Quantity - 1
Product Type - COMPUTER PROCESSOR

Full Specifications

Brand	Intel
Wattage	29 watts
Platform	Windows
CPU Model	Pentium
CPU Speed	1 GHz
CPU Socket	Socket 370
Model Number	BX80526C1000256
Mfr Part Number	BX80526C1000256
Processor Brand	Intel
Processor Count	1
Processor Speed	1 GHz
Secondary Cache	1 MB
CPU Manufacturer	Intel
Item Part Number	BX80526C1000256S
Processor Series	Pentium
Processor Socket	Socket 370
Item Package Dimension	7.5L x 6.5W x 2.75H inches
Cache Memory Installed Size	256
Global Trade Identification Number	00735858139199

Ready to buy?

Intel BX80526C1000256 PENTIUM III 1GHz FCPGA 256KB Cache Processor 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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