Intel Core i5-4250U

The Intel Core i5-4250U is a 2013-era mobile processor built on the Haswell architecture, targeting thin-and-light laptops. With 2 cores and 4 threads, it operates at a base clock of 1300 MHz and boosts to 2.60 GHz, fitting into a 15W thermal envelope. The data places it at the 20th percentile of all CPUs, meaning it sits squarely in the entry-level performance tier for its generation, though its integrated Intel HD 5000 graphics and low power draw make it a practical choice for basic portable computing.

Platform and Compatibility

The i5-4250U is designed for the Intel BGA 1168 socket, which means it is permanently soldered to the motherboard. This has a direct consequence for upgrade paths: the processor cannot be swapped out by the user. Any system built around this chip is effectively limited to its original configuration, so buyers should consider the full laptop specs at purchase time. The platform uses the Haswell architecture on a 22 nm process node, with 1,400 million transistors packed into a 118 mm² die.

Memory support is limited to DDR3, and the chip does not support ECC memory. The memory bus specification is not provided in the data, but the lack of ECC and the mobile orientation indicate a consumer-focused design. PCIe details are also absent from the record, so expansion capabilities cannot be quantified here. The integrated graphics are handled by the Intel HD 5000 unit, which shares the system memory, so the DDR3 support directly impacts graphical performance as well as compute tasks. For a machine from this era, the platform is closed and fixed, making it more suitable for a dedicated ultraportable role than for a hobbyist upgrade project.

Power and Thermals

With a TDP of 15 watts, the i5-4250U falls into the ultra-low-power class of mobile processors. This rating dictates the entire thermal solution: a passive or low-profile active cooler is sufficient, and the chip is intended for fanless or near-silent designs in slim chassis. The base clock of 1300 MHz is conservative, which keeps heat generation minimal during idle and light loads. The boost clock of 2.60 GHz allows for short bursts of higher performance, but sustained multi-core workloads will be constrained by the thermal limits of the 15W envelope.

The data does not specify a cooler type or wattage figures beyond the TDP, but the implication is clear: this is not a chip for a high-performance desktop rig. It belongs in a laptop where battery life and low heat output are priorities. The 22 nm process helps with efficiency, but the Haswell architecture is now several generations old, so modern equivalents will outperform it in both speed and power efficiency. For practical purposes, a basic heatpipe and fan assembly designed for ultrabooks will handle this processor without issue, and the thermal headroom is minimal for overclocking—which is irrelevant anyway, as the multiplier is locked.

How It Compares

Intel Core i5-3610ME: This rival is a statistical dead heat. The i5-4250U and the i5-3610ME both post an average benchmark score of 759, yielding a deltaPct of 0. That means the two chips perform identically in aggregate across the tested workloads. The i5-3610ME is an older Ivy Bridge part, but the score parity suggests that architectural differences balance out in real-world tasks. For a user, there is no performance reason to choose one over the other based on this metric.

Intel Core i3-5020U: The i3-5020U edges out the i5-4250U with an average score of 760, representing a deltaPct of -0.1. That difference is negligible—less than a single point on a 760-point scale. The i3-5020U is a newer Broadwell part, but the i5-4250U’s higher tier (i5 vs i3) likely compensates for the generational gap. In practical terms, these chips are interchangeable in performance, though the i5 may have slightly better integrated graphics.

Intel Pentium Silver N5000: The Pentium Silver N5000 scores 761, which is -0.2 deltaPct relative to the i5-4250U. Again, the difference is a rounding error in real usage. The N5000 is a much newer, quad-core design from the Gemini Lake family, but its lower clock speeds and weaker single-thread performance bring it down to this level. The i5-4250U holds its own despite being older, largely due to its higher boost clock and superior architecture for single-threaded instructions.

Intel Core i5-4200U: The i5-4200U is the closest sibling, with a score of 762 and a deltaPct of -0.3. This is the direct predecessor within the same Haswell U-series family. The 4200U is slightly faster in aggregate, likely due to a higher base clock or better binning. The difference, however, is under one percent, so the 4250U and 4200U are effectively the same experience for most applications. The 4250U does have the advantage of a newer part number, but that does not translate into a measurable performance lead here.

FAQ

Q: Does the Intel Core i5-4250U support ECC memory?

A: No, the FACT PACK lists ECC memory support as false, so the processor is incompatible with error-correcting memory modules.

Q: What is the socket type for this processor?

A: The i5-4250U uses the Intel BGA 1168 socket, which is a soldered, non-upgradeable mobile socket.

Q: How many cores and threads does the i5-4250U have?

A: It has 2 physical cores and 4 threads, enabled by Hyper-Threading technology.

Q: What is the boost clock speed?

A: The boost clock is 2.60 GHz, while the base clock is 1300 MHz.

Q: Is the multiplier unlocked for overclocking?

A: No, the multiplier is locked (multiplierUnlocked is false), so the processor cannot be overclocked.

Q: What integrated graphics does this chip include?

A: It features the Intel HD 5000 integrated graphics unit.

Q: What is the release date of the i5-4250U?

A: The release date is June 3, 2013.

Benchmark Performance

The benchmark data for the i5-4250U spans multiple Cinebench and Geekbench versions, providing a composite view of its capabilities. In Cinebench R15 multi-core, the chip scores 183. In R20, the multi-core score jumps to 766, while the single-core score is 107. The R23 results show a multi-core score of 1824 and a single-core score of 257. Geekbench tests yield a multi-core score of 1434 and a single-core score of 742. The average benchmark score across all tests is 759.

These numbers place the i5-4250U at the 20th percentile of all CPUs, which is a low but not bottom-tier position. The average score of 759 is identical to the Intel Core i5-3610ME, which is a direct rival at 0% delta. The Intel Core i3-5020U is 0.1% faster, the Pentium Silver N5000 is 0.2% faster, and the i5-4200U is 0.3% faster. These deltas are all within a single point, meaning the i5-4250U is statistically indistinguishable from its closest competitors. The data shows a cluster of chips all hovering around the 760-point mark, and the i5-4250U is right in the middle of that pack.

The practical takeaway is that the i5-4250U is not a performance leader by any stretch. It will handle basic office work, web browsing, and light media playback without issue, but it will struggle with modern multi-threaded applications like video encoding or 3D rendering. The 20th percentile ranking confirms that most CPUs on the market outperform it, so it is only suitable for low-demand tasks or legacy systems.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread scores reveals a significant imbalance. In Cinebench R20, the single-core score is 107, while the multi-core score is 766—a ratio of roughly 7:1. This is expected for a dual-core chip with Hyper-Threading, as the multi-core score leverages all four threads. However, the single-core score of 107 is exceptionally low, even for a 2013 processor. Compare that to the R23 single-core score of 257, which is proportionally higher relative to the multi-core score of 1824 (a ratio of 7.1:1). The Geekbench single-core score of 742 versus multi-core of 1434 shows a much tighter ratio of 1.9:1, indicating that the Geekbench workload scales less effectively with the limited core count.

For real-world usage, this means the i5-4250U is heavily dependent on the application's ability to use multiple threads. Programs that rely on a single core—such as older games, spreadsheet macros, or some web rendering engines—will see poor performance, as the single-core scores are among the lowest in the dataset. Conversely, well-threaded workloads like video transcoding or batch photo editing will use all four threads and deliver relatively better throughput, though still constrained by the low absolute performance. The boost clock of 2.60 GHz helps single-threaded bursts, but the base clock of 1300 MHz is the more common operating point, which explains the weak single-core numbers. Users should prioritize multi-threaded applications for this chip, and avoid single-thread-heavy tasks where possible.