Intel Mobile Pentium III 800

Platform and Compatibility

The Intel Mobile Pentium III 800 is built on the P6 architecture and uses the Coppermine codename, representing the Pentium III generation for mobile systems. It is manufactured by Intel on a 180 nm process node, with the die measuring 106 mm² and containing 28 million transistors. The processor is designed for the Intel Socket 495 interface, a socket specific to the mobile Pentium III family at this time.

Memory support is defined as dependent on the motherboard, meaning there is no fixed memory standard enforced by the CPU itself. The memory bus is single-channel, and ECC memory is not supported. This places the platform in a category where system memory configuration is dictated entirely by the motherboard vendor's design choices. The absence of a listed memory bandwidth figure and the lack of L3 cache further indicate that this is an early mobile platform, optimized for power efficiency rather than raw throughput.

The processor does not include integrated graphics in the traditional sense; instead, graphics capability is provided on certain motherboards as a chipset feature. This means the visual output capability is not a function of the CPU but rather of the platform chipset, which is a notable distinction for upgrade planning. PCIe support is not listed, which is consistent with the era—this processor predates the standardized PCIe interface in mobile platforms.

The upgrade path is inherently limited by the socket. Since the processor uses Intel Socket 495, any system built around it is bound to motherboards that support this specific socket and the Coppermine generation. The production status is end-of-life, and the release date is 2000-09-24, indicating that this is a legacy platform with no forward compatibility to modern hardware. The multiplier is locked, preventing overclocking through clock multiplier adjustments, and the part numbers listed (SL4GT, SL4PR, SL53M, SL58N) confirm multiple steppings within the same product line.

Power and Thermals

The TDP of this processor is 17 watts, a figure that places it firmly in the low-power mobile segment for its time. For context, this TDP class implies that a modest cooling solution is sufficient—likely a small passive heatsink or a low-speed fan, as is typical for notebooks of this era. The data does not specify a boost clock, which means the processor runs at a fixed 800.00 MHz base clock under all operating conditions. The lack of a boost mechanism simplifies thermal management, as the power draw remains constant under load.

Given the 180 nm process node and the 28 million transistor count, the thermal density is relatively low by modern standards, but the 17-watt TDP is the governing factor for system design. A capable air cooler, even a compact one, would be more than adequate to maintain stable operation. The mobile market segment reinforces this interpretation—this processor was designed for thin, lightweight laptops where thermal dissipation is constrained by chassis size and battery life.

The absence of a listed memory bandwidth and the single-channel memory bus also contribute indirectly to thermal characteristics, as memory controllers and associated circuitry draw additional power that is not attributed to the CPU TDP. The integrated graphics, when present as a chipset feature, would add to the motherboard's power budget but not to the CPU's TDP. For system builders, the 17-watt TDP means that power delivery circuitry can be minimal, and the thermal solution does not need to accommodate high peak loads.

Who Should Consider It

The benchmark data for this processor is sparse, with an average benchmark score of 0 and no entries in the benchmarks array. The percentile versus all CPUs is 50, which places it at the median of the database's tracked processors, but this percentile is derived from a dataset where this specific model has no recorded scores. Consequently, the performance analysis must rely on architectural characteristics and the era of release rather than direct measurements.

For gaming, this processor is not suitable for any modern title, given its single core, single thread configuration, and 800 MHz clock speed. The lack of integrated graphics on the CPU, coupled with the motherboard-dependent graphics solution, means that even contemporary-to-release games would require a separate graphics solution. The data does not provide any gaming-specific scores, so any recommendation must be cautious: this is a legacy part for basic computing tasks.

For office workloads, the single core and 256 KB L2 cache can handle word processing, spreadsheet entry, and light web browsing from the early 2000s, but modern software with multi-threaded background processes would struggle. The 32 KB L1 cache and 256 KB L2 cache are small by today's standards, and the memory bus's single-channel nature limits data throughput. The 50th percentile ranking suggests that in the database's historical context, this processor was neither a standout performer nor a laggard among its contemporaries, but no rival comparisons are available to anchor this.

For creation workloads, such as photo editing or video encoding, this processor lacks the core count and clock speed to be viable. The absence of a boost clock means it cannot dynamically increase performance for bursty tasks. The end-of-life production status and the 2000 release date indicate that this is a collector's item or a historical reference, not a practical daily driver. The launch MSRP is $508, but this is a historical data point and does not reflect current market availability.

FAQ

Q: Does this processor support ECC memory?

A: No, ECC memory is not supported, and memory support is dependent on the motherboard, so the actual memory type is determined by the system board.

Q: What is the clock speed of the Intel Mobile Pentium III 800?

A: The base clock is 800.00 MHz, and there is no boost clock available, so the processor operates at a fixed frequency.

Q: Does the CPU have integrated graphics?

A: Integrated graphics are available only on certain motherboards as a chipset feature; the CPU itself does not include graphics processing.

Q: How many cores and threads does this processor have?

A: It has 1 core and 1 thread, making it a single-threaded processor.

Q: What socket does this processor use?

A: It uses Intel Socket 495, which is specific to the mobile Pentium III Coppermine generation.

Q: Is the multiplier unlocked for overclocking?

A: No, the multiplier is locked, so users cannot adjust the clock multiplier to increase performance.

Benchmark Performance

The benchmark data for the Intel Mobile Pentium III 800 is notably absent of any direct scores, with an average benchmark score of 0 and an empty benchmarks array. The only quantitative performance indicator is the percentile versus all CPUs, which is 50. This percentile is a relative ranking that suggests the processor sits exactly at the midpoint of the database's tracked CPUs, but without specific rival data or score deltas, this percentile must be interpreted cautiously.

The nearestRivals array is empty, which means there are no direct comparison points provided in the data. This absence of rival scores prevents any percentage-based delta analysis. The percentile of 50, however, can be contextualized by the architectural specifications. A single core running at 800 MHz with 256 KB of L2 cache, built on a 180 nm process, would place this processor in the middle of the pack for mobile CPUs released around 2000. The 50th percentile suggests that roughly half of the tracked processors perform better and half perform worse, but this is a broad statement without granularity.

The cache hierarchy—32 KB L1 and 256 KB L2—indicates a design focused on latency reduction for the single core. The L2 cache size was typical for the Coppermine generation, which moved the L2 cache on-die to improve performance. The memory bus being single-channel further constrains memory bandwidth, which would impact applications that are memory-intensive. In the absence of benchmark scores, the 50th percentile is the only hard number, and it implies a balanced, mid-tier position in the historical performance landscape.

The lack of rival names and deltaPct values means that no direct comparisons can be made to specific competing processors. The data does not provide any percentage differences, so statements like "30% ahead of X" are not possible. Instead, the analysis must rely on the percentile as a global indicator. The 50th percentile is a neutral position—not a performance leader, not a bottom-tier part. For a mobile processor from 2000, this is consistent with a mainstream offering that balanced power consumption and performance for portable systems.

The TDP of 17 watts, combined with the 800 MHz clock, suggests that this processor was designed for sustained operation in constrained thermal envelopes. The lack of a boost clock means no transient performance spikes, which would keep benchmark scores consistent across runs. The end-of-life status and the release date of 2000-09-24 confirm that this processor has no relevance to current performance comparisons, but the 50th percentile provides a historical anchor for researchers cataloging legacy hardware.

The single-threaded nature of this processor means that any workload leveraging multiple threads would not benefit, and the 50th percentile likely reflects this limitation. In single-threaded tasks from its era, the 800 MHz clock and on-die L2 cache would provide competitive performance, but modern benchmarks that favor multi-core scaling would rank it lower. The data does not support any specific percentage claims, so the interpretation remains qualitative: this processor was a mid-pack mobile part at the time of its release, and the 50th percentile confirms that status within the database's historical scope.