Explore Intel Pentium III Mobile 866MHz technical reviews, specifications and benchmark results, with practical context for laptop performance, efficiency and upgrade research.
Last updated: 2026-10-20Intel Pentium III Mobile 866MHz is a Laptop processor with 1 cores and 1 threads. Its base clock is 0.9 GHz. It records a PassMark CPU Mark of 99 and a single-thread rating of 132.
A summary based on specifications and results.
Intel Pentium III Mobile 866MHz is a Laptop processor with 1 cores and 1 threads. Its base clock is 0.9 GHz. It records a PassMark CPU Mark of 99 and a single-thread rating of 132.
Specification context
The Intel Pentium III Mobile 866MHz is a Laptop released in 2009. Recorded specifications include 1 cores and 1 threads, a 99 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.
The 99 CPU Mark is a broad overall-performance measure, while the 132 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.
No confirmed socket is recorded for this processor. Verify the exact device or motherboard with the manufacturer before planning an upgrade.
Verify the system memory type, real power limits and cooling capacity.
FAQ
The main recorded details are 1 cores and 1 threads, a 99 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.
The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.
A confirmed socket is not recorded here. Use the device model or manufacturer specifications to identify compatible hardware.
A structured TDP value is not currently available. Check the manufacturer specification and device power limits.
This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.
Multi-axis comparison
A direct comparison with nearby processors from the same brand and a similar core count.
A higher CPU Mark indicates stronger overall performance.
Measures speed in tasks that depend on one CPU thread.
Estimated as CPU Mark divided by TDP.
Bars are relative to the processors shown here, not a global ranking of every CPU.
Snapshot from 2026-10-20
| Brand | Intel |
|---|---|
| Category | Laptop |
| Release year | 2009 |
| Socket | — |
| Cores / threads | 1 / 1 |
| Base clock | 0.90 GHz |
| Max turbo | — |
| TDP | — |
| Integrated graphics | — |
| Memory type | — |
|---|---|
| Official speed | — |
| Maximum capacity | — |
No structured cache data.
