Intel Xeon MP 3.33

How It Compares

The Intel Xeon MP 3.33 sits in a peculiar position: it is a single-core server processor from the NetBurst era, specifically from the Potomac line. With no nearest rivals listed in the benchmark database, the data presents it as a standalone entry, which itself is telling. Its 50th percentile ranking among all CPUs in the database indicates it lands exactly in the middle of the pack — neither a performance outlier nor a laggard, but a midpoint reference point for its generation.

Because the nearestRivals field is empty, direct percentage comparisons are unavailable. Instead, the analysis must rely on the processor's own characteristics. The single core and single thread configuration places it firmly in the early dual-core transition period of server hardware, where multi-threaded workloads were still the exception rather than the rule. Its 3.33 GHz base clock was aggressive for 2005, and the 8 MB of L3 cache was substantial, suggesting the design prioritized cache-heavy database and transaction workloads over raw thread counts.

The absence of rival data means the Xeon MP 3.33 cannot be positioned against contemporaries like competing Opteron or other Xeon variants in this database. What the data does show is a processor that was built for a specific niche: single-threaded performance with a massive cache footprint, aimed at servers running legacy enterprise applications that could not leverage multiple cores. Its 50th percentile ranking implies that, in the broader historical context of all CPUs ever benchmarked, it performs at the median — a reasonable outcome for a part that was high-end at launch but is now firmly end-of-life.

Power and Thermals

The Xeon MP 3.33 carries a thermal design power (TDP) of 135 watts. This is a high figure by modern standards, and for its era it placed the processor in the upper tier of server power consumption. The 135W TDP class implies that a capable air cooler with a substantial heatsink and a high-static-pressure fan is required; passive cooling is not an option. In a server chassis, this typically translates to redundant fan arrays and careful airflow management to prevent thermal throttling.

The 90 nm process node, manufactured by Intel, contributes to this thermal profile. While 90 nm was a leading-edge process in 2005, the NetBurst architecture was notorious for high power draw relative to performance. The 135W figure means that system integrators had to spec power supplies and cooling solutions with significant headroom. The 286 million transistor count, housed without a listed die size, further indicates a complex chip that generates concentrated heat in a small area.

For modern workloads, the 135W TDP is a liability. Any system running this processor will require a cooling solution designed for high-end workstation or server parts, and the thermal output will be substantial in a dense rack environment. The data does not list a boost clock, which suggests the processor runs at a fixed 3.33 GHz under load, meaning the thermal solution must handle continuous maximum power draw without variance. Liquid cooling is not strictly necessary, but a high-quality air cooler with heat pipes is the minimum viable option.

Single-Thread vs Multi-Thread Behavior

The Xeon MP 3.33 is a single-core, single-thread processor. This is the defining characteristic of its performance profile. In single-threaded workloads, the 3.33 GHz clock speed is the primary driver, and the 8 MB L3 cache provides a significant advantage for data sets that fit within that footprint. For legacy applications that are not multi-threaded — such as older database engines, single-threaded ERP systems, or serialized scientific computations — this processor can still deliver respectable performance, provided the software is compatible with the NetBurst instruction set.

Multi-threaded behavior is essentially nonexistent. With one thread, the processor cannot execute parallel workloads efficiently. Any modern application that spawns multiple threads will see the Xeon MP 3.33 fall dramatically behind even entry-level dual-core processors. The 1 MB L2 cache and 16 KB L1 cache are small by modern standards, but they are consistent with the single-core design. The dual-channel memory bus, which supports ECC memory, is the only concession to server-class memory bandwidth, but without multiple cores to generate memory requests, the bandwidth is unlikely to be a bottleneck.

The split between single-thread and multi-thread behavior is stark: this is a processor that excels at serial tasks and fails at parallel ones. For a 2024 workload environment, this means it is only suitable for single-threaded legacy applications that cannot be migrated. The data shows no boost clock, indicating that the processor does not dynamically adjust its frequency, so single-threaded performance is capped at the base 3.33 GHz. In practice, the 8 MB L3 cache is the standout feature, as it was unusually large for a single-core part and was designed to reduce memory latency for database lookups.

FAQ

Q: What is the clock speed of the Intel Xeon MP 3.33?

A: The base clock is 3.33 GHz, and there is no boost clock listed, meaning the processor runs at a fixed frequency.

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

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

Q: What is the cache configuration?

A: The cache hierarchy includes 16 KB of L1 cache, 1 MB of L2 cache, and 8 MB of L3 cache.

Q: Does the processor support ECC memory?

A: Yes, ECC memory is supported, and the memory bus is dual-channel.

Q: What socket does this processor use?

A: It uses Intel Socket 604, which is specific to the Xeon MP server platform.

Q: When was this processor released, and is it still in production?

A: It was released on March 28, 2005, and its production status is end-of-life.

Who Should Consider It

The workload-based recommendations for the Intel Xeon MP 3.33 are narrow and specific. For gaming, this processor is entirely unsuitable. Modern games require multiple cores, high memory bandwidth, and instructions that the NetBurst architecture does not support efficiently. The single thread and 3.33 GHz clock cannot handle contemporary game engines, and the lack of integrated graphics means a discrete GPU is mandatory, but even then, the CPU would bottleneck any modern graphics card.

For content creation, the Xeon MP 3.33 is equally unsuited. Video editing, 3D rendering, and photo processing are all multi-threaded workloads that would leave this processor at a severe disadvantage. The 1 core and 1 thread configuration cannot parallelize rendering tasks, and the 135W TDP means it runs hot without delivering competitive throughput. The only scenario where it might be considered is running legacy single-threaded plugins or scripts that are incompatible with modern processors, but even then, the lack of modern instruction sets is a hurdle.

For office productivity, the processor is overkill and underwhelming simultaneously. Single-threaded word processing, spreadsheet calculations, and email clients would run adequately, but the 135W TDP and server socket make it impractical for a desktop workstation. The 8 MB L3 cache could benefit large spreadsheet operations or database queries in a single-user scenario, but the dual-channel memory bus and lack of modern I/O negate those advantages. The realistic use case is a legacy server running a single-threaded enterprise application that cannot be virtualized or migrated — in that specific niche, the 3.33 GHz clock and 8 MB L3 cache provide a stable, if power-hungry, platform.

Platform and Compatibility

The Intel Xeon MP 3.33 is built for the Intel Socket 604 platform, which was designed for multi-processor server configurations. The architecture is NetBurst, with the codename Potomac, and it is part of the Xeon MP generation. This is a 90 nm part with 286 million transistors, manufactured by Intel. The processor supports dual-channel memory with ECC, which is essential for server reliability, but the FACT PACK does not list specific memory types or capacities.

The PCIe support is not listed, which suggests that this processor predates or does not natively support PCIe, instead relying on older I/O buses. The absence of integrated graphics means a discrete GPU or server graphics controller is required. The upgrade path is effectively nonexistent: Socket 604 was a dead-end platform, and the end-of-life production status means no future processor releases will support this socket. Any system built around this processor is locked to its current configuration.

The memory bus being dual-channel implies that the platform supports two memory channels, but the FACT PACK does not specify the memory type (e.g., DDR, DDR2). The ECC support indicates this is a server-grade platform, and the 135W TDP requires a motherboard with robust power delivery. The part number is RK80546KF0938M, and the multiplier is locked, meaning overclocking is not possible. For compatibility, the only modern relevance is as a collector's item or for running legacy software in a controlled environment.

Benchmark Performance

The average benchmark score for the Intel Xeon MP 3.33 is 0, which is a placeholder indicating that no benchmark data has been recorded in this database. Its percentile rank is 50, meaning it sits at the median of all CPUs tracked. Without benchmark scores or nearest rivals, the performance analysis must be inferred from the specifications.

The 3.33 GHz base clock is the highest clock speed available for this processor, and it is competitive with the clock speeds of its era. However, modern processors achieve similar or higher clock speeds with multiple cores and far more efficient architectures. The 8 MB L3 cache is the standout feature; in 2005, this was a massive cache that could hold substantial working sets, reducing the frequency of memory accesses. For single-threaded workloads where the data fits in the L3 cache, the Xeon MP 3.33 could outperform processors with smaller caches but higher clock speeds.

The 1 core and 1 thread configuration is the limiting factor. In any benchmark that scales with thread count, this processor will score at a fraction of modern multi-core parts. The dual-channel memory bus, while adequate for a single core, does not provide the bandwidth needed for multi-threaded memory-intensive workloads. The 135W TDP for a single core is inefficient by modern standards, indicating that performance per watt is low.

The absence of nearest rivals in the data means no percentage deltas can be cited. However, the 50th percentile ranking is a useful anchor: it suggests that, in the full historical database, half of all processors perform better and half perform worse. Given that the database includes modern CPUs, this ranking is surprisingly high for a 2005 server part, likely because the 3.33 GHz clock and 8 MB L3 cache keep it competitive in single-threaded tests. The processor's performance is best described as "era-appropriate": it was a high-end server chip at launch, and its legacy value lies in its cache size and clock speed, not its core count.