Intel Core i5-5250U

The Intel Core i5-5250U is a 14 nm Broadwell-U mobile processor designed for thin-and-light laptops. With 2 cores and 4 threads, it targets a segment where efficiency is paramount and raw speed is secondary. The data places this chip firmly in the entry-level tier of the current benchmark landscape, with an average benchmark score of 857 and a percentile rank of 22 against all CPUs. This means it outperforms roughly a fifth of the processors in the database, a figure that contextualizes its capabilities as modest by modern standards. The processor is end-of-life, having been released in February 2015, and its benchmark results reflect a design philosophy rooted in the ultra-low-power mobile era of that period.

Benchmark Performance

The benchmark results for the i5-5250U show a consistent pattern of performance across synthetic workloads. In Cinebench R23, the processor scores 2085 in multicore and 294 in single-core tests. These figures are useful for establishing a performance baseline, but the more informative analysis comes from comparing the average score to its nearest rivals. The data indicates that the i5-5250U is statistically tied with the Intel Xeon W3520, as both have an identical average score of 857, representing a delta of 0%. This is a notable comparison because the Xeon W3520 is a desktop-class server chip from an earlier era, yet the mobile i5 matches its aggregate output in these benchmarks.

Looking at other rivals, the performance deltas are minimal. The Core i5-5250U is a mere 0.1% ahead of the Intel Core i5-2500T, which scores 856. This places the two processors in the same performance envelope, despite their different architectures and market positions. Interestingly, the i5-5250U is actually 0.2% behind the Intel Celeron J4125, which scores 859, and 0.4% behind the AMD A8-7650K, which scores 860. These negative deltas, while small, indicate that the i5-5250U sits at the bottom of this particular comparison group. When analyzing the individual benchmarks, the Geekbench scores of 1587 for multicore and 825 for single-core reinforce the picture of a chip that handles basic tasks but will struggle with demanding multi-threaded applications. The Cinebench R20 results follow suit, with a multicore score of 875 and a single-core score of 123, illustrating a significant drop-off in performance as thread counts increase.

Platform and Compatibility

The i5-5250U is built on the Intel BGA 1168 socket, which is a soldered, non-upgradeable platform. This is a critical factor for any potential user, as the processor is permanently attached to the motherboard, eliminating any possibility of a future CPU swap. The platform is based on the Broadwell-U architecture, specifically the "Broadwell-U" codename, which is part of the Core i5 (Broadwell-U) generation. The processor utilizes a 14 nm process node fabricated by Intel, with a transistor count of 1,900 million on a die size of 133 mm². This small die and dense process technology were key to enabling the ultra-low power consumption that defined this chip.

Memory support is limited to DDR3, operating in a dual-channel configuration. The theoretical memory bandwidth is 29.9 GB/s, which is adequate for the processor's capabilities but is a bottleneck compared to newer DDR4 or DDR5 platforms. ECC memory is not supported, meaning the chip is not intended for mission-critical server or workstation environments. For expansion, the i5-5250U provides PCIe Gen 2 with 12 lanes available from the CPU. This is an older PCIe standard, and the limited lane count means that high-bandwidth devices like modern discrete graphics cards will be constrained. The platform includes integrated graphics in the form of the Intel HD 6000, which provides basic display output capabilities but is not suited for gaming or graphics-intensive tasks. The upgrade path is effectively nonexistent; users are locked into the original specifications of the laptop they purchased.

Power and Thermals

The thermal design power (TDP) of the i5-5250U is 15 watts. This is a defining characteristic of the chip, classifying it as an ultra-low-power processor intended for fanless or low-noise cooling solutions in portable devices. A 15-watt TDP means that a simple, capable air cooler is sufficient to manage thermals. In a laptop context, this typically translates to a thin heatsink and a small fan, or in some very compact designs, passive cooling with a heatpipe. The low power draw also has implications for battery life, as the processor's energy efficiency allows for longer runtimes on a single charge.

The 14 nm process node is a significant contributor to this efficiency. The combination of a low TDP and a modern (for its time) manufacturing process means that the i5-5250U generates very little heat under load. During sustained multicore workloads, the processor will likely reach its thermal limits but remain well within safe operating temperatures due to the low power envelope. However, this also means that there is no headroom for performance boosting; the chip is designed to operate within a strict power budget, and any cooling solution that can dissipate 15 watts of heat is more than adequate. The implication for the user is that thermal throttling is unlikely to be a major issue in a well-designed chassis, but the performance ceiling is low due to the power constraints.

Who Should Consider It

Given the benchmark scores, the i5-5250U is best suited for users with modest computing needs. The Geekbench multicore score of 1587 and Cinebench R23 multicore score of 2085 indicate that the processor can handle everyday productivity tasks such as web browsing, word processing, and spreadsheet management with acceptable responsiveness. For office work that involves multiple open applications and moderate multitasking, the 4 threads can manage the load, though performance will feel sluggish compared to modern processors. The single-core performance, as seen in the Geekbench single-core score of 825, is sufficient for basic interactive use but does not excel.

This processor is not a viable option for gaming. The integrated Intel HD 6000 graphics lack the horsepower for any modern 3D titles, and the low CPU scores will bottleneck even older games. For content creation, the i5-5250U is severely limited. Video editing, 3D rendering, and large-scale photo processing are out of the question, as the multicore performance is far too low for these tasks. The Cinebench R20 multicore score of 875 highlights this weakness. Instead, the ideal user is someone who needs a basic, energy-efficient laptop for email, document creation, and streaming media. It is a processor that was designed for a specific era of ultra-portable computing, and its performance profile reflects that focus on efficiency over speed.

Single-Thread vs Multi-Thread Behavior

The performance split between single-thread and multi-thread workloads reveals a processor that is balanced but weak in absolute terms. The Cinebench R23 scores show a single-core result of 294 and a multicore result of 2085. The multicore score is roughly seven times the single-core score, which is an unusual ratio for a dual-core processor with four threads. This suggests that the two physical cores scale well when additional threads are engaged, but the absolute performance is so low that the improvement is not transformative. In real-world terms, this means that single-threaded tasks like opening an application or loading a web page will feel slower than on a modern chip, but the processor can still complete them.

The Geekbench results tell a similar story, with a single-core score of 825 and a multicore score of 1587. Here, the multicore score is less than double the single-core score, indicating that the scaling is less efficient in this particular workload. This discrepancy between Cinebench and Geekbench suggests that the i5-5250U's performance is highly dependent on the specific application and how well it can utilize multiple threads. For everyday tasks that are largely single-threaded, the processor operates near its peak capability, but for any task that can use multiple cores, the low base clock of 1600 MHz and the limited core count become a significant disadvantage. The processor's behavior indicates that it is best suited for lightly threaded workloads where the boost clock of 2.70 GHz can be maintained, rather than heavily threaded applications that will cause the clock speed to drop and expose the chip's limitations.

FAQ

Q: What is the average benchmark score of the Intel Core i5-5250U?

A: The average benchmark score is 857, which places it in the 22nd percentile of all CPUs in the database.

Q: How does the i5-5250U compare to the Intel Celeron J4125?

A: The i5-5250U is 0.2% slower than the Celeron J4125, which has an average score of 859 compared to the i5's 857.

Q: What type of memory does the processor support?

A: The i5-5250U supports DDR3 memory in a dual-channel configuration, with a memory bandwidth of 29.9 GB/s. ECC memory is not supported.

Q: Can the processor be overclocked?

A: No, the multiplier is locked, and the processor is soldered to the BGA 1168 socket, preventing any CPU upgrade or overclocking.

Q: What is the TDP of the i5-5250U?

A: The thermal design power is 15 watts, which is typical for an ultra-low-power mobile processor and requires only a simple cooling solution.

Q: What is the launch MSRP of the i5-5250U?

A: The launch MSRP is $315.