Intel Core i7-8565U

The Intel Core i7-8565U is a mobile processor built on the Whiskey Lake architecture, featuring 4 cores and 8 threads with a base clock of 1800 MHz and a boost clock of 4.60 GHz. It occupies the 69th percentile among all CPUs in the database, with an average benchmark score of 8647, placing it in the upper-midrange tier for mobile computing.

How It Compares

The AMD EPYC 7601, a server-class chip, averages 8619 points, which is 0.3% lower than the i7-8565U’s 8647 average. This effectively places the two processors in a statistical tie, as the delta is well within typical run-to-run variance. The i7-8565U achieves this parity despite being a 15 W mobile part designed for thin-and-light laptops, whereas the EPYC 7601 is a data center processor with vastly different power and thermal characteristics.

The Intel Core i5-8265U posts an average score of 8617, which is 0.4% behind the i7-8565U. Both chips share the same 4-core/8-thread configuration and 15 W TDP class, but the i7-8565U’s higher boost clock of 4.60 GHz over the i5’s likely lower maximum gives it a slight edge in burst workloads. The margin is narrow, however, suggesting that real-world application performance would be nearly indistinguishable in most scenarios.

The Intel Core i7-10510U scores 8588 on average, trailing the i7-8565U by 0.7%. This is a newer Comet Lake part, yet the data shows the older Whiskey Lake design holds a measurable advantage in aggregate benchmark performance. The 0.7% delta is small but consistent, indicating that the i7-8565U’s combination of clock speeds and cache hierarchy still competes effectively against its newer sibling.

The Intel Core i5-8365U is the only rival in this group that outperforms the i7-8565U, averaging 8711 points, which is 0.7% higher. This is a curious result, as the i5-8365U typically has lower clocks than the i7-8565U, yet its average score is higher in this database. The delta is modest, and the i7-8565U’s 4.60 GHz boost clock should theoretically give it an edge in single-threaded tasks, but the aggregate data favors the i5-8365U by a slim margin.

Power and Thermals

The i7-8565U is rated at a 15 W TDP, which classifies it as a low-power mobile processor designed for ultrabooks and compact laptops. This TDP class implies that a standard thin-and-light cooling solution—typically a small heat pipe and a low-profile fan—is sufficient to maintain sustained operation. The 14 nm process node, manufactured by Intel, means the chip does not generate excessive heat despite its 4.60 GHz boost capability, as the boost is likely limited to short bursts before thermal throttling kicks in.

Given the 15 W TDP, the i7-8565U does not require a discrete cooler or a large heatsink. Laptop manufacturers typically pair this chip with passive cooling in fanless designs or a single fan in active-cooled chassis. The lack of an unlocked multiplier reinforces that this is a fixed-frequency part meant for OEM designs rather than enthusiast overclocking, which further simplifies thermal management. The integrated UHD Graphics 620 also shares the same thermal budget, so heavy graphics loads can reduce sustained CPU clocks.

Benchmark Performance

In Cinebench R15, the i7-8565U scores 512 in multicore and 72 in single-core. The multicore score of 512 is modest for a 4-core/8-thread part, reflecting the 15 W power limit that restricts sustained all-core boost frequencies. The single-core score of 72 is low in absolute terms, but it aligns with the chip’s high boost clock being only briefly sustainable. Compared to the i5-8265U, which scores 0.4% lower on average, the i7-8565U’s R15 numbers suggest a slight edge in lightly threaded tasks.

Cinebench R20 results show 2137 in multicore and 301 in single-core. The multicore score is roughly 4.2 times the single-core score, which is close to the theoretical scaling for 4 cores with 8 threads, indicating efficient thread utilization. The R20 single-core score of 301 is competitive for a 15 W part, and the 0.7% lead over the i7-10510U in average score suggests that the i7-8565U holds its own in newer rendering workloads.

Cinebench R23 delivers 5090 in multicore and 718 in single-core. The multicore score represents a significant jump from R20, as R23 is more demanding but also reflects better optimization. The single-core score of 718 is strong, and the ratio between multicore and single-core (approximately 7.1x) indicates that the chip scales well across all cores under shorter workloads. This places the i7-8565U within striking distance of the i5-8365U, which leads by 0.7% on average.

PassMark results are mixed. In data compression, the i7-8565U scores 75995, which is an exceptionally high number for a mobile chip, indicating strong memory bandwidth utilization. Data encryption scores 1993, which is low in absolute terms, while extended instructions score 4770 and find prime numbers scores 22. Floating point math hits 12934, integer math reaches 21581, and multithread scores 5988. The single-thread score is 2118, which is consistent with the Cinebench single-core results. The physics score of 458 is notably low, suggesting that the chip struggles with complex physics simulations, likely due to the 15 W power envelope limiting sustained all-core boost.

FAQ

Q: How does the Core i7-8565U’s average benchmark score compare to the AMD EPYC 7601?

A: The i7-8565U averages 8647 points, while the EPYC 7601 averages 8619 points, a delta of 0.3%. This places the two chips in a statistical tie despite their vastly different market segments.

Q: What is the TDP of the Core i7-8565U, and what cooling does it require?

A: The TDP is 15 W, which means a standard thin-and-light laptop cooler—such as a small heat pipe and fan—is sufficient. No high-end cooling solution is required.

Q: What are the Cinebench R23 scores for this processor?

A: The multicore score is 5090, and the single-core score is 718, with the single-core result indicating strong short-burst performance.

Q: How does the i7-8565U perform in PassMark integer math?

A: It scores 21581 in integer math, which is a strong result for a 4-core mobile chip, while floating point math scores 12934.

Q: Which rival has the highest average score in the nearest rivals list?

A: The Intel Core i5-8365U has the highest average score at 8711, which is 0.7% higher than the i7-8565U’s 8647.

Q: Does the i7-8565U support ECC memory?

A: No, ECC memory is not supported. The chip supports DDR3 and DDR4 memory in a dual-channel configuration with 38.4 GB/s bandwidth.

Who Should Consider It

For mobile professionals who prioritize single-threaded responsiveness, the i7-8565U’s 4.60 GHz boost clock and Cinebench R23 single-core score of 718 make it a solid choice for office applications, web browsing, and spreadsheet work. The PassMark single-thread score of 2118 reinforces this, as these workloads rarely stress all cores simultaneously.

Content creators working with light photo editing or video transcoding will find the i7-8565U adequate, given its Cinebench R20 multicore score of 2137 and R23 multicore score of 5090. The data compression score of 75995 suggests that file archiving and decompression tasks perform particularly well, which is beneficial for asset management. However, the low physics score of 458 indicates that heavy 3D rendering or complex simulations will be sluggish, so it is not suited for professional 3D work.

Gamers on integrated graphics should temper expectations. The UHD Graphics 620 can handle esports titles at reduced settings, but the 15 W TDP and lack of discrete graphics mean demanding games will struggle. The floating point math score of 12934 is adequate for basic physics in games, but the overall compute throughput is limited by the power envelope.

Users who need a balance of portability and moderate compute will appreciate the 15 W TDP, which enables fanless or near-silent designs in ultrabooks. The i7-8565U’s end-of-life production status means it is best suited for budget-conscious laptop purchases or upgrades to existing systems, rather than new high-end builds. The 69th percentile ranking places it above most older mobile chips but below contemporary high-performance parts, so it is a reliable workhorse for everyday productivity and light creative tasks, but not a top-tier performer for demanding professional workloads.