Intel

SL4MF INTEL PENTIUM-III 1GHZ 133MHZ 256KB FC-PGA PROCESSOR P/N: SL4MF - INTEL

Name: SL4MF INTEL PENTIUM-III 1GHZ 133MHZ 256KB FC-PGA PROCESSOR P/N: SL4MF - INTEL
Brand: Intel
SKU: B0045JPLX8

Bottom line: The SL4MF INTEL PENTIUM-III 1GHZ 133MHZ 256KB FC-PGA PROCESSOR P/N: SL4MF 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.

Live pricing on eBay

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

🛒 See live eBay price Also on Amazon — Check price → Compare to similar retro cpus

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

✓ Warranty Included

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

CPU INTEL PENTIUM III 1000/256/133/1.7V SL4MF

SpecPicks Verdict

SpecPicks scored SL4MF INTEL PENTIUM-III 1GHZ 133MHZ 256KB FC-PGA PROCESSOR P/N: SL4MF 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

Warranty Included

Full Specifications

Brand	Intel
CPU Model	Pentium III
CPU Socket	Socket P
Model Number	SL4MF
Mfr Part Number	SL4MF
Processor Brand	Intel
Secondary Cache	1 MB
CPU Manufacturer	Intel
Processor Series	Pentium III
Processor Socket	Socket P

Ready to buy?

SL4MF INTEL PENTIUM-III 1GHZ 133MHZ 256KB FC-PGA PROCESSOR P/N: SL4MF - INTEL 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.

See live eBay listings → Check Amazon listing →