Intel Pentium III 1333

The Intel Pentium III 1333 is a single-core, single-thread desktop processor built on Intel's P6 architecture with the Tualatin codename. It runs at a fixed 1333.00 MHz base clock with no boost capability, draws a 30W TDP, and was released on 2001-11-30. The database records no benchmark runs for this part (average score 0), and it sits at the 50th percentile of all CPUs. It is an end-of-life, locked-multiplier part on Intel Socket 370, with the part number SL5VXSL6BZSL6HS.

Single-Thread vs Multi-Thread Behavior

The Pentium III 1333 presents a purely single-threaded execution model: one core, one thread, and a base clock of 1333.00 MHz with no boost clock listed. There is no second thread to hide memory latency or overlap independent work, so every instruction stream competes for the same execution resources. For real workloads, this means the processor is entirely dependent on single-thread performance and clock speed. The 8 KB L1 cache and 256 KB L2 cache are the only on-die memory hierarchy; there is no L3 cache. The small cache sizes and the single-thread design place a hard ceiling on what the chip can do with modern, multi-threaded software.

In practice, the split between single-thread and multi-thread behavior is not a split at all — there is no multi-thread side. Applications that are single-threaded and latency-bound, such as legacy office documents, simple scripting, or older games, will see the full 1333 MHz applied to a single stream. Anything that spawns threads will run one thread at a time, serializing work. The 50th percentile ranking in the database suggests that, among all CPUs tracked, this part lands in the middle — but because the average benchmark score is 0, that percentile is a positional artifact rather than a measured performance result. The data does not show any multi-threaded advantage because the hardware cannot express one. The 8 KB L1 cache is small enough that tight loops and frequently accessed data will fit, but larger working sets will spill to the 256 KB L2 cache, and beyond that to system memory.

Power and Thermals

The 30W TDP places the Pentium III 1333 in a low-power class. Fabricated on Intel's 130 nm process with 44 million transistors on an 80 mm² die, the chip is small and modest in both transistor count and physical area. A 30W thermal envelope means a lightweight cooling solution is sufficient; there is no boost clock to create transient power spikes, so the thermal load is steady under sustained operation. The absence of a boost clock also means the processor cannot exceed its rated clock to chase short bursts of performance — it simply runs at 1333.00 MHz or idles.

The combination of a 130 nm process and 44 million transistors is indicative of a design from the 2001-11-30 release era, and the 80 mm² die size is small by any modern standard. For a builder, the practical implication is that cooling is not a concern: any air cooler that fits Socket 370 will handle the 30W load. Because the part is end-of-life, there is no expectation of new cooling hardware being developed for it, but existing Socket 370 coolers are more than adequate. The locked multiplier further simplifies power behavior — the CPU cannot be overclocked to raise the TDP. The low power draw also means that passive cooling or a small low-profile heatsink is a realistic option in a compact chassis, though the database does not specify any particular cooler requirements.

Benchmark Performance

The benchmark data for the Pentium III 1333 is sparse: the benchmarks array is empty and the average benchmark score is 0. This is not a measured zero — it reflects the absence of recorded runs in the database. The percentile versus all CPUs is 50, which places the part exactly at the median of the database's CPU distribution. Without recorded scores, there are no raw performance numbers to analyze, and without nearest rivals, there are no percentage deltas to report. The data cannot show how far ahead or behind this chip is from any specific competitor.

What the data does show is positional: a 50th percentile rank means half of all tracked CPUs sit below this part and half sit above it in the database's ordering. That ordering, however, is not derived from the benchmark results of this chip, since its average score is 0. A practical reading is that the Pentium III 1333 is a middle-of-the-road legacy part — not a performance outlier in either direction. For workloads that are strictly single-threaded and fit within the 8 KB L1 and 256 KB L2 caches, the 1333.00 MHz clock provides predictable throughput. For anything larger or parallel, the lack of multi-threading and the small caches become the limiting factors. The 50th percentile also implies that a substantial portion of the database's tracked CPUs are slower, but the data does not reveal which specific parts those are or by what margin.

How It Compares

The database currently lists no nearest rivals for the Pentium III 1333. The nearestRivals field is empty, so there are no rival names, scores, or deltaPct values to cite. This is itself informative: the part is not positioned against any contemporary competitor in the database's comparison framework. The only relative signal available is the 50th percentile versus all CPUs, which places it at the median of the entire tracked population.

Without rival data, comparison must be qualitative. Against modern multi-core processors, the single-thread-only design and the 30W TDP suggest a vast gap in throughput — but the data does not quantify that gap, and no numbers from outside the fact pack may be introduced. Against other legacy single-core parts, the 1333.00 MHz clock is respectable for its era, and the 256 KB L2 cache is reasonably sized for a P6 derivative. The absence of an integrated GPU in the CPU (noted as a chipset feature on certain motherboards) means any comparison of graphics capability is moot — the CPU does not provide it. The locked multiplier and end-of-life status further distinguish it from unlocked, actively supported parts in the database, but again, the data provides no direct comparison points.

Platform and Compatibility

The Pentium III 1333 uses Intel Socket 370, a socket that was common for Intel's P6-family desktop parts. The architecture is P6, with the Tualatin codename, and the chip is built on Intel's 130 nm process at Intel's own foundry. Memory support is not specified in the database — there is no memory bus width, no memory bandwidth figure, and no ECC support (ECC is listed as false). PCIe support is likewise not listed in the database. The integrated graphics field notes that graphics are a chipset feature on certain motherboards, not a function of the CPU itself.

The multiplier is locked, so the 1333.00 MHz base clock cannot be raised through multiplier adjustment. The L1 cache is 8 KB and the L2 cache is 256 KB; there is no L3 cache. The production status is end-of-life, meaning Intel no longer produces this part. For upgrade path considerations, Socket 370 is a legacy platform: there are no modern processors that fit this socket, and the chipset-dependent features (including the graphics capability on certain motherboards) tie the CPU to its original motherboard generation. The 44 million transistor count and 80 mm² die size reflect the design's age, and the 30W TDP is low enough that any Socket 370 board from the same era should be able to supply adequate power. The lack of a listed PCIe interface means expansion is handled through the motherboard's chipset, consistent with the platform's release date of 2001-11-30.

Who Should Consider It

The Pentium III 1333 is a desktop-market part, released on 2001-11-30 and now end-of-life. Its profile — one core, one thread, 1333.00 MHz, 30W TDP, 8 KB L1, 256 KB L2 — makes it suitable for a narrow set of workloads. Single-threaded office tasks, legacy software that predates multi-core awareness, and older games that were designed for single-core CPUs are the realistic use cases. The 50th percentile ranking suggests it is not a standout performer even within the database's legacy population, but it is also not at the very bottom.

For gaming, the single-thread design and small caches will limit modern titles, which expect multiple threads and large caches. For content creation, the lack of multi-threading is a hard stop — rendering, encoding, and compilation all scale with thread count, and this chip has one thread. For office use, basic document editing, spreadsheet work, and web browsing on a legacy operating system could run acceptably at 1333.00 MHz, provided the software is single-threaded. The 30W TDP means the chip is easy to cool and can run in compact systems with minimal airflow. However, the end-of-life status and locked multiplier mean there is no headroom for overclocking, and the platform offers no modern upgrade path. Builders looking for a period-correct retro system or a low-power single-threaded machine for legacy software are the audience; anyone needing parallel throughput should look elsewhere. The 50th percentile placement, while not a measured score, at least confirms the part is not an outlier in the database's overall distribution.