Intel

Intel Pentium III Mobile Processor at 850.00 MHz Processor

Name: Intel Pentium III Mobile Processor at 850.00 MHz Processor
Brand: Intel
SKU: B00080O5ZI

Bottom line: The Intel Pentium III Mobile Processor at 850.00 MHz 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

✓ Intel Pentium III Mobile Processor at 850.00 MHz, 100MHz bus, 256K cache, Micro-PGA2

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 Mobile Processor at 850.00 MHz, 100MHz bus, 256K cache, Micro-PGA2. Part Number SL53L. Specifications: Processor Frequency 850.00 MHz, CPUID String 068A, Package Type Micro-PGA2, Core Voltage 1.6V/1.35V, Bus Speed 100 MHz, Thermal Guideline 27.5W, Core Stepping PD0, Thermal Spec 100, L2 Cache Size 256K, Manufacturing Technology 0.18 micron, L2 Cache Speed 850 MHz, Bus/Core Ratio 8.0

SpecPicks Verdict

SpecPicks scored Intel Pentium III Mobile Processor at 850.00 MHz 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

Intel Pentium III Mobile Processor at 850.00 MHz, 100MHz bus, 256K cache, Micro-PGA2
Part Number SL53L
Specifications: Processor Frequency 850.00 MHz, CPUID String 068A, Package Type Micro-PGA2, Core Voltage 1.6V/1.35V, Bus Speed 100 MHz, Thermal Guideline 27.5W, Core Stepping PD0, Thermal Spec 100, L2 Cache Size 256K, Manufacturing Technology 0.18 micron, L2 Cache Speed 850 MHz, Bus/Core Ratio 8.0
Comes with a 90 Day Replacement Warranty

Full Specifications

Brand	Intel
CPU Model	Pentium
CPU Speed	0.85 GHz
CPU Socket	Socket P
Model Number	SL53L
Mfr Part Number	SL53L
Processor Brand	Intel
Processor Speed	0.85 GHz
CPU Manufacturer	Intel
Processor Series	Pentium
Processor Socket	Socket P

Ready to buy?

Intel Pentium III Mobile Processor at 850.00 MHz 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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