Intel Core M-5Y70

Intel Core M-5Y70 is a 2-core, 4-thread Broadwell-Y mobile processor with a 5W TDP, a 1.10 GHz base clock, and a 2.60 GHz boost clock. Its average benchmark score of 547 places it at the 11th percentile of all CPUs, meaning it outperforms only about a tenth of the processors in the database. This is a part designed for extreme low-power, fanless ultraportables, and its benchmark data consistently reflects that positioning.

How It Compares

Against the AMD Athlon II X3 450, the Core M-5Y70 is statistically tied, with a delta of -0.1% and identical average scores of 547. The Athlon II is a much older, desktop-oriented triple-core part, yet the comparison shows the Core M-5Y70's modern architecture and higher clock efficiency are enough to match it in aggregate multi-threaded workloads. The practical difference is that the Core M-5Y70 achieves this parity at a tiny fraction of the power envelope — the data does not list the Athlon's TDP, but the Core M-5Y70's 5W figure speaks to a completely different thermal class.

Versus the Intel Xeon E5345, the Core M-5Y70 comes out marginally ahead, with a 0.2% delta and scores of 547 vs. 546. The Xeon E5345 is a server-grade quad-core from an older generation, so this near-tie is remarkable for a low-power mobile chip. In practice, this means the Core M-5Y70 delivers roughly the same aggregate compute throughput as that older Xeon, but with far better power characteristics — though the Xeon's multi-core advantage in raw core count is effectively neutralized by the Core M-5Y70's superior per-clock efficiency.

Compared to the AMD A6-9500, the Core M-5Y70 trails by a slight 0.3%, with scores of 547 vs. 549. The A6-9500 is a desktop APU with a much higher power draw, yet its performance advantage is negligible in the grand scheme of benchmark results. This suggests the Core M-5Y70 is not leaving much performance on the table relative to a low-end desktop part, which is a strong statement about its architectural efficiency — but it also underscores that the Core M-5Y70 is not a desktop-class performer by any stretch.

The largest gap is against the Intel Core i5-2515E, which leads by 0.5% with a score of 550 vs. 547. The i5-2515E is a dual-core mobile part from the Sandy Bridge era, and the Core M-5Y70 nearly matches it in aggregate benchmark scores. This is notable because the i5-2515E has a significantly higher TDP and is a more traditional laptop processor, while the Core M-5Y70 is a fanless ultra-low-power design. The 0.5% deficit is within noise, meaning the Core M-5Y70 essentially matches that older part in overall throughput.

Power and Thermals

The Core M-5Y70 has a TDP of just 5W, which places it in the ultra-low-power class of processors. This is not a chip that requires a heatsink with a fan; the data implies a passive cooling solution is entirely viable, making it suitable for thin-and-light designs with no moving parts. In the context of benchmark results, this 5W figure explains why multi-core scores are modest — the CPU is thermally constrained to operate within a very tight power budget, so sustained all-core loads will cause it to run near its base clock of 1.10 GHz rather than its boost clock of 2.60 GHz.

For a builder or buyer, this TDP class means the cooling tier is minimal: a small aluminum heat spreader or a slim vapor chamber is sufficient. There is no need for a tower cooler or even a low-profile fan, which is the entire point of the Core M-5Y70. The trade-off is that under heavy multi-threaded workloads, the chip will not sustain high clocks, and performance will be limited by the 5W power envelope rather than by thermal headroom. For light, bursty tasks, the 2.60 GHz boost clock provides responsive single-thread performance, but prolonged loads will settle back toward the base clock.

Who Should Consider It

Based on the benchmark data, the Core M-5Y70 is a fit for users who prioritize portability and battery life over raw compute. In Cinebench R23 multi-core, it scores 1591, which is a very low figure — this is not a processor for video rendering, 3D modeling, or heavy compilation workloads. Single-core performance is stronger in relative terms: a Cinebench R23 single-core score of 224 is still low in absolute terms, but it indicates the chip can handle everyday tasks like web browsing, document editing, and light productivity without feeling sluggish, as long as the workload is not sustained all-core.

For gaming, the integrated Intel HD 5300 graphics and low CPU scores mean this is only suitable for very light, older, or 2D titles; modern 3D games will be severely CPU-bound and likely unplayable at acceptable frame rates. For office work, the Core M-5Y70 can manage spreadsheets, email, and word processing, but the 11th percentile overall ranking suggests it will struggle with multitasking across many heavy applications. Creative professionals should avoid it entirely — the multi-core scores (668 in R20, 160 in R15) are far too low for photo editing, video encoding, or audio production. The ideal user is someone who needs a silent, fanless, highly portable machine for basic productivity and media consumption, not intensive number-crunching.

FAQ

Q: How does the Core M-5Y70 perform in multi-core workloads?

A: Its best multi-core result is 1591 in Cinebench R23, with lower scores of 668 in Cinebench R20 and 160 in Cinebench R15. These are very low figures, placing the chip at the 11th percentile of all CPUs.

Q: Is the Core M-5Y70 suitable for gaming?

A: No. Its average benchmark score of 547 and low multi-core scores indicate it lacks the CPU throughput for modern games. The integrated Intel HD 5300 graphics are also not designed for demanding 3D rendering.

Q: What is the single-core performance like?

A: In Cinebench R23 single-core, it scores 224, and in Cinebench R20 single-core, it scores 94. These are low absolute numbers, but they are relatively stronger than its multi-core results, indicating acceptable responsiveness for basic tasks.

Q: How does it compare to the AMD Athlon II X3 450?

A: They are essentially tied, with the Core M-5Y70 averaging 547 to the Athlon's 547, a delta of -0.1%. This is notable given the Core M-5Y70's much lower 5W TDP.

Q: Does the Core M-5Y70 support ECC memory?

A: No, ECC memory is not supported. It uses DDR4 memory.

Q: What is the production status of this processor?

A: The production status is listed as "Active," meaning it is still a current product, despite its 2014 release date.

Platform and Compatibility

The Core M-5Y70 uses the Intel BGA 1234 socket, which means it is soldered to the motherboard and is not upgradeable by the end user. It is built on the Broadwell architecture with a 14 nm process node, and its die size is 50 mm². The chip supports DDR4 memory, though the memory bus and bandwidth are not specified in the data; it lacks ECC support. There is no PCIe information provided, so the expansion capabilities are unknown from the data, but as a mobile BGA part, it is designed for a fixed platform with limited or no expansion slots.

The integrated graphics are Intel HD 5300, which is part of the Broadwell-Y package. The socket and BGA mounting mean the upgrade path is effectively zero — you cannot swap this processor for a different model. This is a sealed system component, so buyers should choose a laptop or mini-PC with the Core M-5Y70 based on the full system configuration, knowing that future CPU upgrades are impossible. The memory support is limited to DDR4, which is standard for the era, and the lack of ECC confirms this is a consumer-oriented part, not a workstation or server chip.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread scores is stark and reveals the Core M-5Y70's design philosophy. In Cinebench R23, the single-core score is 224, while the multi-core score is 1591 — a ratio of roughly 7:1 in favor of multi-core, which is expected for a 2-core/4-thread part. However, the absolute values are both low, so the chip is not fast in either category. In Cinebench R20, the single-core score of 94 and multi-core score of 668 show a similar pattern, with multi-core being about 7.1 times higher.

The practical implication is that the Core M-5Y70 can handle single-threaded tasks like opening applications, scrolling web pages, and typing in documents with reasonable responsiveness, thanks to its 2.60 GHz boost clock. But when multiple cores are engaged — such as during a system update, background virus scan, or any parallel workload — the processor's limited power budget and low clock speed cause performance to drop significantly. The 5W TDP means the chip cannot boost all cores simultaneously for long, so multi-threaded performance is constrained by thermal and power limits rather than by the architecture's theoretical capability. In real-world use, this means the Core M-5Y70 feels snappy for light, interactive tasks but bogs down under sustained multi-threaded load, making it unsuitable for any workload that leverages more than one or two cores for extended periods.