Intel Core i5-450M

The Intel Core i5-450M is a dual-core mobile processor from the Arrandale generation, built on Intel's 32nm Westmere architecture. It features a base clock of 2.40 GHz and a boost clock of 2.67 GHz, with 2 cores and 4 threads. With a 35W TDP, it targets laptop systems. Benchmark data shows it sits in the 6th percentile of all CPUs, with an average score of 407. This analysis examines its behavior across single- and multi-threaded workloads, power characteristics, and position against its nearest rivals.

Single-Thread vs Multi-Thread Behavior

The i5-450M's benchmark results reveal a clear split between single-thread and multi-thread performance. In Cinebench R20, the single-core score is 63 points, while the multi-core score reaches 447. That is a substantial gap, indicating that the two physical cores and four threads scale well when the workload is parallelized. However, the absolute single-core score is very low, placing a hard limit on any task that depends on per-thread speed. Cinebench R23 shows a similar pattern: 150 single-core versus 1066 multi-core. The Geekbench results are more modest: 342 single-core and 675 multi-core, which suggests that the scaling is less pronounced in that benchmark, but still present.

For real workloads, this means that applications which can utilize multiple threads will see a significant benefit over single-threaded ones. Office suites, web browsers with multiple tabs, and light productivity tools that can spread across threads will perform relatively better than software that is heavily dependent on one core. However, the low single-thread scores indicate that even those tasks will not feel snappy by modern standards. The boost clock of 2.67 GHz over the base 2.40 GHz provides a small headroom, but the benchmark data shows that the processor is fundamentally limited by its architecture and process node.

The 6th percentile ranking across all CPUs underscores that this is a very low-performing chip in the database. For any workload that requires strong per-core performance, such as gaming or certain simulation tasks, the i5-450M will be a bottleneck. Conversely, for batch operations like file compression or simple video encoding that can use all four threads, the multi-core scores offer a bit more capability, but still far from competitive levels. The 64 KB L1 cache per core and 256 KB L2 per core are modest, and the shared 3 MB L3 cache is the only larger pool of fast memory, which helps slightly in multi-threaded scenarios but does not overcome the fundamental throughput limits.

Power and Thermals

With a TDP of 35W, the i5-450M is firmly in the mobile power envelope. This is a modest figure that allows for a compact cooling solution, typical for laptops of its era. The processor is built on a 32nm process, with 382 million transistors on an 81 mm² die. These specifications indicate a design focused on power efficiency rather than raw performance. The 35W TDP means that the chip can be cooled by a simple fan and heatpipe arrangement, and it will not generate excessive heat in a thin chassis. The die size of 81 mm² is small, and the transistor count of 382 million is relatively low, reflecting the dual-core layout without an integrated GPU on the CPU itself.

The integrated graphics are not on the CPU but are a chipset feature, which means the CPU's power draw is solely for the compute cores and cache. This can simplify thermal management, as the graphics load is handled separately. However, the lack of an integrated GPU on the die means that a compatible motherboard with integrated graphics is required for any video output without a discrete graphics card. The 32nm process node is a key factor in keeping the TDP at 35W, but the benchmark scores indicate that the power budget is not translated into high performance. Given that the production status is end-of-life, there are no new units being manufactured, and the platform is no longer supported with firmware updates.

Benchmark Performance

The i5-450M's average benchmark score is 407, placing it in the 6th percentile of all CPUs. This is a very low standing, meaning that the vast majority of processors in the database outperform it. The individual benchmark scores are consistent with this picture. In Cinebench R15, the multi-core score is 107. Cinebench R20 yields 447 multi-core and 63 single-core. Cinebench R23 shows 1066 multi-core and 150 single-core. Geekbench reports 675 multi-core and 342 single-core. These numbers are all in the low range; for example, a Cinebench R23 multi-core score of 1066 is a fraction of what even entry-level desktop processors achieve, though the data does not provide those comparisons directly.

Against its nearest rivals, the i5-450M is essentially tied. The Intel Core i3-2350M has an average score of 407, a 0% delta. The i3-390M scores 406, a 0.1% delta in favor of the i5-450M. The i3-3227U also scores 406, with a 0.2% delta. The Celeron G555 scores 405, a 0.4% delta. These differences are negligible in real-world terms; a 0.4% difference in a benchmark average would not be perceptible in any application. The tight clustering of these scores suggests that the i5-450M is not meaningfully better or worse than its immediate competitors. The percentile ranking of 6 is more telling, as it indicates that this processor is at the bottom of the performance spectrum. For any modern workload, these scores will be insufficient, and the processor will struggle to keep up with even basic multitasking.

Who Should Consider It

Given the benchmark data, the i5-450M is only appropriate for basic computing tasks. The single-core scores of 63 in Cinebench R20 and 150 in Cinebench R23 indicate that even simple interactions like web browsing or document editing will feel sluggish compared to more capable processors. The multi-core scores, while higher, are still low enough that heavy multitasking or any form of content creation is impractical. For office work, such as word processing, spreadsheets, and email, the processor can handle these tasks, but users will experience delays when switching between applications or running multiple tabs. The integrated graphics being a chipset feature means that a motherboard with graphics support is required, and even then, the graphics performance will be minimal.

Gaming is not a realistic use case; the low single-thread performance and lack of a strong integrated GPU would limit it to very old or 2D titles. The 6th percentile ranking suggests that this processor is at the very bottom of the CPU performance hierarchy. It could be considered for legacy systems where reliability is more important than speed, such as a basic file server or a lightweight terminal. However, for any workload that demands responsiveness, the i5-450M will be a bottleneck. The 2 cores and 4 threads do provide some parallel capability, but the absolute performance is too low to recommend it for any modern use case beyond the most trivial. The lack of ECC memory support further narrows its applicability to non-critical environments.

How It Compares

Against the Intel Core i3-2350M, the i5-450M has an identical average benchmark score of 407, with a 0% delta. This means that in aggregated performance, the two processors are indistinguishable. Users would not notice any difference between them in everyday tasks, and the choice between them would come down to platform specifics rather than raw speed.

The Intel Core i3-390M trails by 0.1%, with an average score of 406. This is a negligible margin, well within the noise of benchmark variation. The i5-450M is technically ahead, but the difference is meaningless in practical use. Both chips are from the same era and exhibit similar thermal and power characteristics.

The Intel Core i3-3227U also scores 406, a 0.2% delta in favor of the i5-450M. Again, this is a trivial difference that will not affect real-world performance. The i3-3227U is a later-generation part, but the benchmark average shows that the i5-450M holds its own in aggregate, though the single-core scores might differ in specific workloads.

The Intel Celeron G555 has an average score of 405, making the i5-450M 0.4% faster. This is the largest delta among the nearest rivals, but still a fraction of a percent. In practical terms, all four of these processors perform at the same level, and the i5-450M's position is defined more by its architecture and age than by any meaningful performance edge.

Platform and Compatibility

The i5-450M uses the Intel Socket G1, which is specific to the Arrandale mobile platform. It supports DDR3 memory, though the memory bus and bandwidth are not specified in the data. The PCIe interface is Gen 2, which is a generation older than the current standard, but still functional for basic expansion cards. ECC memory is not supported, so this is not intended for server or error-critical applications.

The integrated graphics are a chipset feature, meaning the CPU does not contain an iGPU. This requires a motherboard with integrated graphics capabilities to output video without a discrete GPU. The lack of an integrated GPU also means that the CPU's power draw is solely for the compute cores, which is a factor in the 35W TDP. The production status is end-of-life, so no new units are available. The socket G1 platform is obsolete, and upgrade paths are limited to other Arrandale processors, though none are listed in the rival data. For any system built around this CPU, future upgrades would require a new motherboard and memory, as the platform is no longer supported by Intel.