Intel Pentium D 945

The Intel Pentium D 945 is a dual-core desktop processor from Intel’s NetBurst architecture, released in 2006 under the Presler codename. Built on a 65 nm process with 376 million transistors and a die size of 2x 81 mm², this chip operates at a base clock of 3.40 GHz with no boost capability. Benchmark results place it in a narrow competitive band against mid-2000s rivals, with an average benchmark score of 222 and a 0th percentile ranking among all CPUs, indicating it sits at the very bottom of modern performance tables. The data below analyzes its synthetic scores, platform compatibility, and practical use cases based solely on the provided measurements.

Benchmark Performance

The Geekbench results for the Pentium D 945 show a multi-core score of 284 and a single-core score of 159. These figures reveal a processor that is heavily reliant on its dual physical cores, as the single-core score is only 56% of the multi-core result. This disparity is typical of NetBurst-era designs, where high clock speeds at 3.40 GHz could not compensate for the architecture’s inefficiencies per instruction.

Compared to its nearest rivals, the Pentium D 945 delivers a 13.6% higher average score than the AMD Athlon 64 X2 4200+, which posts an average score of 196. That margin is meaningful for applications that scale with multiple threads, but it does not translate to a commanding lead. The data shows the Pentium D 945 is 16.5% behind the AMD A6-4455M (average score 266), 16.9% behind the AMD Athlon 64 X2 5000+ (average score 267), and 26.2% behind the Intel Celeron N2930 (average score 301). These deltas indicate that while the Pentium D 945 beats the entry-level Athlon 64 X2 4200+, it loses decisively to even mid-range rivals from both AMD and Intel’s later low-power lines.

The single-core score of 159 is particularly weak when contextualized against the multi-core figure. Since the Pentium D 945 has only 2 threads (matching its 2 cores), any workload that relies on a single thread will see performance roughly half that of the multi-core score. This means legacy software, older games, or single-threaded productivity tools will execute slower than the average score suggests. The multi-core score of 284, while higher, still trails the Intel Celeron N2930 by a wide 26.2% margin, a chip that is not known for high performance. The benchmark results indicate that the Pentium D 945 occupies the lowest tier of dual-core desktop processors from its era, with only the Athlon 64 X2 4200+ serving as a clear inferior in this comparison set.

Platform and Compatibility

The Pentium D 945 uses the Intel Socket 775 interface, a platform that saw extensive use across Intel’s desktop lineup from the mid-2000s. The processor’s memory support is listed as DDR1, DDR2, and DDR3, but with the critical caveat that support depends on the motherboard. This means the actual memory type and speed are dictated by the board’s chipset and design, not the CPU itself. The memory bus is dual-channel, which theoretically allows for higher data throughput compared to single-channel configurations, though no memory bandwidth figure is provided in the data.

There is no PCIe specification listed for this processor, so interface details for expansion cards or GPUs remain unspecified. The integrated graphics are described as a chipset feature available on certain motherboards, meaning the Pentium D 945 does not contain any on-die graphics. For display output, users must rely on a discrete GPU or a motherboard with built-in video capabilities. ECC memory is not supported, which limits its use in error-correcting server or workstation environments.

The platform’s upgrade path is constrained by the socket’s age and the processor’s end-of-life status. Since the production status is listed as end-of-life, new units are not available from Intel, and any upgrade would require sourcing used parts. The Socket 775 platform supported a wide range of Intel processors, but the data does not specify which other CPUs are compatible. The lack of a boost clock and no unlocked multiplier (multiplierUnlocked: false) means overclocking is not officially supported, further limiting headroom for performance gains. The 65 nm process node and 2 MB L2 cache per die (for a total of 4 MB across two dies) are the key architectural details, with the L1 cache at 16 KB per core.

Who Should Consider It

Given the benchmark results, the Pentium D 945 is only suitable for basic, single-task workloads that do not demand modern performance levels. For office productivity, such as word processing, spreadsheet work, or email, the multi-core score of 284 is sufficient for simple, non-threaded applications, though it will feel sluggish with modern software. The single-core score of 159 indicates that any task with a single dominant thread, such as opening large documents or running legacy business applications, will execute slowly.

For gaming, this processor is not viable by any modern standard. The multi-core score of 284 places it far below even low-end rivals like the Intel Celeron N2930, which is 26.2% faster, and the AMD A6-4455M, which is 16.5% faster. Games released after the mid-2000s typically require higher single-thread performance, and the 159 single-core score would bottleneck even entry-level graphics cards. The data does not support any gaming recommendation beyond very old titles from the processor’s release era.

Content creation, such as video editing or 3D rendering, is also poorly served. The 2-thread limit means multi-core scaling stops at two threads, while modern creation software often uses four or more. The Pentium D 945 does beat the AMD Athlon 64 X2 4200+ by 13.6%, so it could handle extremely dated creation workloads that were optimized for dual-core chips, but it falls 16.9% behind the Athlon 64 X2 5000+ and 26.2% behind the Celeron N2930. The only realistic use case is a retro computing setup, a file server for light network storage, or a secondary machine running a lightweight operating system with minimal background tasks. For any workload requiring modern performance, the data clearly shows the Pentium D 945 is outclassed.

FAQ

Q: What is the average benchmark score of the Intel Pentium D 945?

A: The average benchmark score is 222, which places it at the 0th percentile among all CPUs in the database.

Q: How does the Pentium D 945 compare to the AMD Athlon 64 X2 4200+?

A: The Pentium D 945 has a 13.6% higher average score (222 vs. 196), making it the faster of the two in this comparison.

Q: Does the Pentium D 945 support ECC memory?

A: No, ECC memory is not supported by this processor.

Q: What is the boost clock speed of the Pentium D 945?

A: There is no boost clock; the processor runs at a fixed base clock of 3.40 GHz.

Q: Which socket does the Pentium D 945 use?

A: It uses the Intel Socket 775 interface.

Q: What is the memory bus configuration?

A: The memory bus is dual-channel, with support for DDR1, DDR2, or DDR3 depending on the motherboard.

Q: How many threads does the Pentium D 945 have?

A: It has 2 threads, matching its 2 physical cores.

Power and Thermals

The Pentium D 945 has a thermal design power (TDP) of 95 watts, which is specified in the fact pack. This TDP class is typical for dual-core desktop processors from the mid-2000s, but it is high by modern standards for a chip with only 2 cores. The 95 W TDP implies that a capable air cooler is necessary, as stock coolers from that era were designed to handle such loads, but any modern cooling solution must be rated for at least this power draw. Given the 65 nm process node and the NetBurst architecture’s reputation for high heat output, the 95 W figure should be treated as a baseline for thermal design.

The lack of a boost clock means the processor does not have transient power spikes from frequency scaling, so cooling requirements are steady rather than bursty. However, the end-of-life status and old manufacturing process mean that thermal performance may degrade over time with aging thermal interface material. The data does not provide any specific temperature readings or cooling benchmarks, but the 95 W TDP suggests that a low-profile cooler would be insufficient, and a mid-range tower cooler or a well-ventilated case with adequate airflow is advisable. For comparison, the fact pack does not list TDP values for any rivals, so this 95 W figure stands alone as the only thermal metric available. Users building a system around this processor should ensure their power supply and cooling solution are rated to handle continuous 95 W dissipation, particularly under multi-threaded loads that push the multi-core score to its 284 maximum.