Intel Pentium 4 HT 550

The Intel Pentium 4 HT 550 is a desktop processor from Intel, built on the NetBurst architecture with the Prescott codename. It runs at a fixed 3.40 GHz, features one physical core and two logical threads via Hyper-Threading, and carries a 115 W TDP. It uses the Intel Socket 775 interface and supports DDR1, DDR2, and DDR3 memory in a dual-channel configuration. Benchmark results place it at the 50th percentile of all CPUs, indicating a mid-pack position in the database.

Platform and Compatibility

The processor is designed for Intel Socket 775, a widely used desktop socket from the mid-2000s. Memory support spans three generations: DDR1, DDR2, and DDR3, with a dual-channel memory bus. However, the actual memory type usable depends on the motherboard's chipset, as not all boards support all three standards. The processor does not include integrated graphics; any display output comes from a chipset feature on certain motherboards. PCIe connectivity is provided via Gen 2 lanes, which is sufficient for the era's expansion cards and storage devices. The processor has a locked multiplier, so overclocking is not possible through clock multiplier adjustment. It was released on June 20, 2004, and is now end-of-life. The platform's upgrade path is limited to processors that share the same socket and are supported by the motherboard's chipset; the specific range of compatible processors is not documented in this dataset, but the socket's longevity suggests that a variety of later Pentium 4 and other models may be drop-in replacements, though this is not confirmed by the data. The absence of a boost clock means that the processor operates at a constant 3.40 GHz regardless of load, which simplifies thermal management but also means there is no headroom for dynamic frequency scaling.

Who Should Consider It

Given its single-core, dual-thread design, the Pentium 4 HT 550 is best suited for workloads that rely heavily on single-threaded performance. For basic office tasks such as word processing, spreadsheet manipulation, and web browsing, the processor's 3.40 GHz clock and 1 MB L2 cache provide adequate responsiveness, especially when running legacy software from its release era. For gaming, the processor can handle titles from the early 2000s, but modern games that require multiple cores will not benefit. The 50th percentile rank suggests that it performs on par with the median CPU in the database, meaning it is neither a high-end nor a low-end part. Users who require multi-threaded throughput for video editing, 3D rendering, or scientific computing should look elsewhere, as the single core will become a bottleneck. However, for retro computing enthusiasts or for running single-threaded applications in embedded or industrial settings, the processor's fixed clock and predictable behavior could be an advantage. The lack of integrated graphics means a discrete GPU is required for any display output, which is a consideration for system builders. The memory support for three generations provides flexibility in choosing a motherboard, but the actual memory bandwidth is limited by the dual-channel bus, which was standard at the time.

How It Compares

The dataset does not include specific rival processors, so a direct comparison to named competitors is not possible. Instead, the processor's position is defined by its 50th percentile rank among all CPUs in the benchmark database. This means it outperforms exactly half of all processors and is outperformed by the other half. In the context of its release generation, the 3.40 GHz clock is a high figure, but the single-core architecture limits its overall standing. The processor's Hyper-Threading technology provides two logical threads, which can improve responsiveness in multitasking scenarios, but it does not double the execution resources. The 115 W TDP is high for a single-core chip, which may place it at a disadvantage in power-constrained environments. Without rival scores, the percentile rank serves as the primary reference point. It indicates that the Pentium 4 HT 550 is an average performer, neither a standout nor a laggard. Its strengths lie in its high clock speed and generous L2 cache, while its weaknesses include a lack of multiple physical cores and a relatively high power draw.

FAQ

Q: What socket does the Intel Pentium 4 HT 550 use?

A: It uses the Intel Socket 775.

Q: What memory types does it support?

A: It supports DDR1, DDR2, and DDR3 memory, with a dual-channel memory bus.

Q: Does it have integrated graphics?

A: No, integrated graphics are provided by certain motherboard chipsets, not by the processor itself.

Q: What is its TDP?

A: The TDP is 115 W.

Q: Is the multiplier unlocked?

A: No, the multiplier is locked.

Q: When was it released?

A: It was released on June 20, 2004.

Benchmark Performance

The benchmark database assigns this processor a 50th percentile rank, which is the only performance metric available in the dataset. This rank indicates that the processor's overall performance is exactly median among all CPUs tested. However, because the processor has a single physical core, its performance profile is not uniform across different workload types. The 3.40 GHz base clock is the sole operating frequency; there is no boost clock, so the processor runs at a constant speed. This predictability can be beneficial in applications where timing is critical, such as real-time control systems. The cache hierarchy consists of a 16 KB L1 cache and a 1 MB L2 cache. The L2 cache size is substantial for a single-core design, which helps reduce memory latency for frequently accessed data. The processor is built on a 90 nm process node, with 125 million transistors on a 109 mm² die. These characteristics suggest that the processor was optimized for high clock speeds, a hallmark of the NetBurst architecture. In terms of raw performance, the 50th percentile rank implies that it is not a top-tier processor, but it is not a weak one either. For single-threaded tasks, the processor may punch above its overall percentile, given that many modern multi-core processors have lower per-core clock speeds. However, for multi-threaded workloads, the single core will cause it to fall behind. The absence of benchmark scores for individual workloads prevents a more detailed analysis, but the available data points to a processor that is adequate for its intended era.

Single-Thread vs Multi-Thread Behavior

The Pentium 4 HT 550 has one physical core and two logical threads via Hyper-Threading. This means that the processor can execute two threads simultaneously, but they share the same execution resources. In practice, the benefit of Hyper-Threading is limited to scenarios where threads have different resource demands, such as one thread performing integer operations while another handles memory access. The NetBurst architecture is known for its deep pipeline, which allows high clock speeds but also incurs penalties for branch mispredictions. The 3.40 GHz clock is the primary driver of single-thread performance, and the 1 MB L2 cache helps mitigate the long pipeline latency. For single-threaded applications, the processor can deliver strong performance relative to its overall rank. For multi-threaded workloads, the single core becomes a bottleneck, and the Hyper-Threading technology provides only a modest improvement over a true single-threaded processor. The data does not separate single-thread and multi-thread benchmark scores, but the architectural design clearly favors single-threaded execution. Users who run heavily threaded applications, such as video encoding or 3D rendering, will see limited scaling beyond the first thread. In contrast, applications like older games, office suites, and web browsers that are largely single-threaded will benefit from the high clock speed. The 50th percentile rank reflects a balance between these two aspects, but the processor's identity is defined by its single-thread capability.

Power and Thermals

The processor has a TDP of 115 W, which is high for a single-core design, especially when compared to later multi-core processors with similar or lower power envelopes. This high TDP is a consequence of the 90 nm process node and the aggressive clock speed of 3.40 GHz. The die contains 125 million transistors on a 109 mm² area, which contributes to the power density. The NetBurst architecture, with its deep pipelines, also tends to draw more power than more efficient architectures. As a result, a capable air cooler is required to manage the heat output. The lack of a boost clock means that the processor draws a consistent amount of power under load, which can simplify thermal design but also means that idle power consumption is not reduced through frequency scaling. The 115 W TDP class places it in a tier that demands attention to case airflow and cooler selection. For system builders, this processor is not suitable for passively cooled or low-power builds. The end-of-life status means that replacement parts may be harder to find, but for those who already own a compatible motherboard, the processor remains a functional, albeit power-hungry, component.