Intel Pentium 4 511

The Intel Pentium 4 511 is a single-core, single-thread desktop processor built on the NetBurst Prescott architecture. It runs at a base clock of 2.80 GHz, fits the Intel Socket 775, and carries an 84 W TDP. Manufactured on a 90 nm process with 125 million transistors on a 109 mm² die, it represents an early 2004-era design that has long reached end-of-life status.

Platform and Compatibility

The Pentium 4 511 uses the Intel Socket 775, a platform that has been end-of-life for many years. The processor supports DDR1, DDR2, and DDR3 memory through a dual-channel memory bus, which is an unusually wide range of memory types for a single socket. However, ECC memory is not supported, so error-correcting memory modules are out of the question. The integrated graphics are not on the CPU itself; they are available on certain motherboards as a chipset feature, meaning the CPU relies on a discrete or motherboard-integrated GPU for display output. PCIe connectivity is limited to Gen 2, which is a legacy standard. The multiplier is locked, so overclocking must be done through base clock adjustments, and there is no boost clock to rely on for automatic frequency increases. The part number is SL8U4, which identifies this specific stepping.

The upgrade path from this processor is essentially non-existent; any modern motherboard requires a different socket, and the NetBurst architecture is obsolete. For a builder looking at a Socket 775 board, the 511 is a basic entry point, but it will not support modern memory speeds or PCIe Gen 4 or Gen 5 devices. The 90 nm process and 125 million transistors are typical of the Prescott generation, and the die size of 109 mm² is relatively compact for the era. The memory bus is dual-channel, which helps with memory bandwidth, but the single-thread nature limits overall throughput. Because the processor is end-of-life, no new motherboards or chipsets are being produced for this socket, so any compatibility discussion is strictly limited to existing hardware.

Power and Thermals

The 84 W TDP places the Pentium 4 511 in a moderate power class for its time. This is not an extreme-power part, so a basic air cooler with a standard fan is sufficient to keep it within operating limits. Because the processor has a single core and a single thread, heat generation is concentrated in one area, but the 90 nm process node is not particularly efficient by modern standards. The lack of a boost clock means the CPU runs at a constant 2.80 GHz under load, which simplifies thermal management, there are no sudden frequency spikes to cool. For a builder, an 84 W TDP means a low-profile or compact air cooler will handle the job without requiring a large radiator or high-end liquid cooling. The transistor count of 125 million and die size of 109 mm² are modest, contributing to the relatively contained thermal envelope. The end-of-life status means replacement coolers are easy to find, but the performance ceiling is limited by the architecture itself. The 90 nm process generates more heat per square millimeter than newer nodes, but the single core keeps absolute heat output manageable. A standard desktop case with adequate airflow will easily dissipate the 84 W of heat, so thermal throttling is unlikely under normal conditions.

Benchmark Performance

The benchmark data for the Pentium 4 511 is sparse. The database lists an average benchmark score of 0, which indicates that no valid performance runs have been recorded in the current dataset. The percentileVsAllCpus field places it at 50, meaning it sits exactly at the median of all CPUs tracked by this database. Without any nearestRivals entries, direct percentage comparisons against specific competing processors are unavailable. Interpreting the 50th percentile: this processor outperforms half of all CPUs in the database and is outperformed by the other half. For a single-core, single-thread part from 2004, this placement is consistent with a mainstream desktop chip of its era. The base clock of 2.80 GHz is a fixed frequency, and the 1 MB L2 cache and 16 KB L1 cache are the only memory caches available. The lack of a boost clock means there is no headroom for transient performance increases. In practical terms, the 50th percentile ranking suggests that in single-threaded legacy workloads, this CPU can hold its own against other early-2000s parts, but it will be far outpaced by any modern multi-core processor. The absence of benchmark scores makes it impossible to derive exact delta percentages, so the analysis relies on the percentile field as the sole quantitative indicator. The 0 average score is a placeholder rather than a measured result, meaning the 50th percentile is the only reliable data point for performance positioning.

FAQ

Q: What socket does the Intel Pentium 4 511 use?

A: It uses the Intel Socket 775.

Q: What memory types does the Pentium 4 511 support?

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

Q: Does the Pentium 4 511 support ECC memory?

A: No, ECC memory is not supported.

Q: What is the process node and transistor count for this processor?

A: It is manufactured on a 90 nm process with 125 million transistors.

Q: Is the multiplier unlocked on the Pentium 4 511?

A: No, the multiplier is locked.

Q: What is the TDP of the Pentium 4 511?

A: The TDP is 84 W.

Who Should Consider It

The Pentium 4 511 is a legacy part, so it is only relevant for retro computing or for keeping an old Socket 775 system alive. For gaming, the single-core, single-thread configuration means modern games will run poorly, as they require multiple threads. The 50th percentile ranking indicates average performance for its era, but that era has long passed. For content creation, the lack of multi-threading is a severe bottleneck; any video encoding or 3D rendering task will be limited to a single thread, resulting in very long processing times. For office work, basic word processing and spreadsheet tasks might run, but the 2.80 GHz base clock and 1 MB L2 cache will feel sluggish compared to any modern CPU. The integrated graphics are only available on certain motherboards as a chipset feature, so a discrete GPU is recommended for any display output. The end-of-life production status means no new motherboards or chipsets are being made for this socket. A builder should only consider this processor if they are specifically working on a period-correct build or need to replace a failed CPU in an existing Socket 775 board. The locked multiplier and lack of a boost clock mean there is no overclocking headroom, so performance is fixed at the stock 2.80 GHz. Because the database lists no nearest rivals, the 50th percentile is the only comparative data point available, and it confirms that this CPU is not a performance leader even within its own generation.

Single-Thread vs Multi-Thread Behavior

The Pentium 4 511 has exactly 1 core and 1 thread, so there is no multi-threading capability whatsoever. This means every workload, whether single-threaded or multi-threaded, runs on a single execution path. The base clock of 2.80 GHz is the only frequency at which it operates, as there is no boost clock to provide temporary increases. The NetBurst architecture, with its Prescott codename, relies on a deep pipeline to achieve high clock speeds, but this comes at the cost of efficiency. In single-threaded applications, the 1 MB L2 cache and 16 KB L1 cache help keep frequently used data close to the core, which can mitigate some of the latency. However, in multi-threaded workloads, the processor cannot split tasks across cores, so it will be completely overwhelmed by any modern CPU that has multiple cores. The 50th percentile ranking reflects its single-thread performance relative to all CPUs, but that ranking is based on a dataset that includes many multi-core parts. In practice, the single-thread behavior is the only behavior this CPU exhibits. For real workloads, this means a user must accept that any parallel processing is impossible. The lack of a boost clock also means there is no transient speed-up for short bursts of activity, so the 2.80 GHz frequency is a hard ceiling. The memory bus is dual-channel, which helps with memory bandwidth, but the single-thread nature limits overall throughput. The 16 KB L1 cache is small by modern standards, and the 1 MB L2 cache is the only secondary cache available. In any application that can use multiple threads, the Pentium 4 511 will be the limiting factor, and even in single-threaded tasks, the deep pipeline of the NetBurst architecture can cause inefficiencies that a more modern design would avoid.