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Our first Core i7-8565U Whiskey Lake-U benchmarks are in and performance is almost indistinguishable from the Core i7-8550U

Our first Core i7-8565U Whiskey Lake-U benchmarks are in and performance is almost indistinguishable from the Core i7-8550U (Image source: PC World)
Our first Core i7-8565U Whiskey Lake-U benchmarks are in and performance is almost indistinguishable from the Core i7-8550U (Image source: PC World)
Whiskey Lake-U doesn't offer much in terms of performance enhancements over its immediate Kaby Lake-R predecessor based on our initial benchmarks with the Asus Zenbook UX433. It's largely forgettable if you already own a Kaby Lake-R laptop, but users with older systems will still see value if deciding to upgrade.

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After an admittedly impressive gen-to-gen performance boost with Kaby Lake-R last year, it was perhaps inevitable that this year's Whiskey Lake-U would offer a much smaller improvement. We recently benchmarked the Core i7-8565U in the new Asus Zenbook UX433 and raw performance results are pretty much the same as the Core i7-8550U CPU that it is set to replace.

Our graph below directly compares the new i7-8565U in the Zenbook UX433 to the last generation i7-8550U in the Zenbook UX430 when running CineBench R15 Multi-Thread in a loop. The newer Whiskey Lake-U processor is just marginally better at maintaining faster Turbo Boost clock rates than its predecessor for a performance advantage of about 5 to 8 percent at best. In contrast, the performance jump from Kaby Lake i7-7500U to Kaby Lake-R i7-8550U can be as high as 75 to 90 percent. In short, the end-user will likely not notice any differences between a laptop running on the i7-8550U or i7-8565U.

The main reason why Kaby Lake-R was such a huge leap over Kaby Lake was its doubling of physical cores. In contrast, the Whiskey Lake-U series is only a minor update on the same 14 nm fabrication process with more integrated PCIe lanes (16 vs 12) over Kaby Lake-R. Core attributes like cache sizes, the integrated UHD Graphics 620 GPU, and base clock rates (1.8 GHz) remain identical between the i7-8550U and i7-8565U.

It's entirely possible that other manufacturers will offer laptops with a stronger implementation of Whiskey Lake-U than our Zenbook UX433. The i7-8565U in the Asus laptop alternates between 2.0 GHz and 2.7 GHz when under extreme processing loads instead of maintaining a fixed clock rate of 2.7 GHz or higher. Thus, a laptop with superior cooling than our Asus may have a good chance of holding higher Turbo Boost clock rates for faster performance. Until then, however, our first impressions for Whiskey Lake-U are mild at best.

The take away message is that owners of Kaby Lake-R laptops equipped with the i5-8250U or i7-8550U have almost no reason to upgrade to Whiskey Lake-U. Users who may be sporting Kaby Lake laptops or older, however, may want to consider a Kaby Lake-R laptop soon since retailers will be clearing stock to make room for Whiskey Lake-U systems.

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Asus Zenbook UX430UN GeForce MX150, 8550U, SanDisk SD8SN8U512G1002; CPU Multi 64Bit: Ø556 (529.72-624.09)
Asus ZenBook 14 UX433FA UHD Graphics 620, 8565U, WDC PC SN520 SDAPNUW-512G; CPU Multi 64Bit: Ø591 (579.19-624.27)
Cinebench R15
CPU Single 64Bit
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
174 Points ∼80%
Asus FX504GD
Intel Core i5-8300H
170 Points ∼78%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
169 Points ∼78%
Asus Zenbook UX430UN
Intel Core i7-8550U
165 Points ∼76%
Microsoft Surface Pro 6, Core i7, 512 GB
Intel Core i7-8650U
163 Points ∼75%
Apple MacBook Pro 13 2018 Touchbar i5
Intel Core i5-8259U
154 Points ∼71%
Dell XPS 13 9370 FHD i5
Intel Core i5-8250U
144 Points ∼66%
Asus ZenBook UX530UX-FY070T
Intel Core i7-7500U
141 Points ∼65%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 7 2700U
135 Points ∼62%
Apple MacBook Air 2018
Intel Core i5-8210Y
132 Points ∼61%
Asus Zenbook 3 Deluxe UX490UA
Intel Core i5-7200U
125 Points ∼57%
CPU Multi 64Bit
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
699 Points ∼16%
Apple MacBook Pro 13 2018 Touchbar i5
Intel Core i5-8259U
687 Points ∼16%
Apple MacBook Pro 13 2018 Touchbar i5
Intel Core i5-8259U
608 Points ∼14%
Dell XPS 13 9370 FHD i5
Intel Core i5-8250U
669 Points ∼15%
Microsoft Surface Pro 6, Core i7, 512 GB
Intel Core i7-8650U
639 Points ∼15%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
622 Points ∼14%
Asus FX504GD
Intel Core i5-8300H
604 Points ∼14%
Asus Zenbook UX430UN
Intel Core i7-8550U
589 Points ∼13%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 7 2700U
546 Points ∼12%
Asus Zenbook 3 Deluxe UX490UA
Intel Core i5-7200U
337 (min: 265, max: 337) Points ∼8%
Asus ZenBook UX530UX-FY070T
Intel Core i7-7500U
307 Points ∼7%
Apple MacBook Air 2018
Intel Core i5-8210Y
285 Points ∼7%
Cinebench R11.5
CPU Single 64Bit
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
1.98 Points ∼81%
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
1.97 Points ∼81%
Asus FX504GD
Intel Core i5-8300H
1.72 Points ∼70%
Asus Zenbook UX430UN
Intel Core i7-8550U
1.7 Points ∼70%
CPU Multi 64Bit
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
7.65 Points ∼28%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
6.86 Points ∼25%
Asus Zenbook UX430UN
Intel Core i7-8550U
6.58 Points ∼24%
Asus FX504GD
Intel Core i5-8300H
6.2 Points ∼23%
Cinebench R10
Rendering Single 32Bit
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
6760 Points ∼62%
Asus FX504GD
Intel Core i5-8300H
6482 Points ∼60%
Asus Zenbook UX430UN
Intel Core i7-8550U
6478 Points ∼60%
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
6436 Points ∼59%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 7 2700U
4379 Points ∼40%
Rendering Multiple CPUs 32Bit
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
23794 Points ∼48%
Asus FX504GD
Intel Core i5-8300H
20061 Points ∼40%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
19689 Points ∼40%
Asus Zenbook UX430UN
Intel Core i7-8550U
19550 Points ∼39%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 7 2700U
9812 Points ∼20%
wPrime 2.0x - 1024m
Asus Zenbook UX430UN
Intel Core i7-8550U
269.12 s * ∼3%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
263.328 s * ∼3%
Asus FX504GD
Intel Core i5-8300H
252.12 s * ∼3%
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
197.647 s * ∼2%
Super Pi Mod 1.5 XS 32M - ---
Asus FX504GD
Intel Core i5-8300H
547.965 Seconds * ∼2%
Asus Zenbook UX430UN
Intel Core i7-8550U
529.977 Seconds * ∼2%
Dell XPS 15 9575 i7-8705G
Intel Core i7-8705G
503.967 Seconds * ∼2%
Asus ZenBook 14 UX433FA
Intel Core i7-8565U
491.131 Seconds * ∼2%

* ... smaller is better

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2018 11 > Our first Core i7-8565U Whiskey Lake-U benchmarks are in and performance is almost indistinguishable from the Core i7-8550U
Allen Ngo, 2018-11-24 (Update: 2018-11-25)
Allen Ngo
Allen Ngo - US Editor in Chief
After graduating with a B.S. in environmental hydrodynamics from the University of California, I studied reactor physics to become licensed by the U.S. NRC to operate nuclear reactors. There's a striking level of appreciation you gain for everyday consumer electronics after working with modern nuclear reactivity systems astonishingly powered by computers from the 80s. When I'm not managing day-to-day activities and US review articles on Notebookcheck, you can catch me following the eSports scene and the latest gaming news.