Notebookcheck

Intel Core i7-8565U

The Intel Core i7-8565U is a power efficient quad-core SoC for notebooks and Ultrabooks based on the Whiskey Lake generation that was announced in August 2018 (IFA). Compared to the similar named Kaby Lake-R processors (e.g. Core i7-8550U), the Whiskey Lake CPUs are now produced in a further improved 14nm process (14nm++) and offer higher clock speeds. The architecture and features are the same. The i7-8565U offers e.g. high Turbo clock speeds of 4,6 GHz (versus 4 GHz of the i7-8550U) for a single core and 4.1 GHz (versus 3.7 GHz) of all cores (4.1 GHz for 2 cores). The integrated GPU is still named Intel UHD Graphics 620 and the dual-channel memory controller still supports the same RAM speeds as Kaby-Lake-R (DDR4-2400 / LPDDR3-2133). Compared to the slower Core i5-8265U and i3-8145U, the i7 supports Thermal Velocity Boost.

The Whiskey Lake SoCs are used with a new PCH produced in 14nm that supports USB 3.1 Gen 2 (10 Gbps) and CNVi WiFi/BT parts.

Architecture

Intel basically uses the same microarchitecture compared to Skylake and Kaby Lake, so the per-MHz performance does not differ. That means Whiskey Lake is a Kaby Lake chip manufactured in the improved 14nm++ process.

Performance

The performance of the i7-8565U depends on the cooling solution of the laptop and the defined TDP limits for short and long term performance. We already saw big differences for Kaby Lake-R (e.g., i7-8550U benchmarks), especially for long term (sustained) performance. Therefore, it will be interesting to see how the additional Turbo  clock speed can be made use of. It looks like Intel is promoting the i7 to be 3 - 11% faster than the previous i7-8550U, with Cinebench R15 Multi reaching 5% gains.

Graphics

The integrated Intel UHD Graphics 620 (Intel Gen 9.5) is untouched from the 8th Gen Kaby Lake chips. With fast dual-channel memory, it can reach the performance of a dedicated GeForce 920M.

Contrary to Skylake, Kaby Lake and Whiskey Lake now also supports H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors announced in January should also support HDCP 2.2.

Power Consumption

The chip is manufactured in a further improved 14nm process with FinFET transistors (14nm++), the same as the 8th Gen Coffee Lake processors. Intel still specifies the TDP with 15 Watts, which is typical for ULV chips. Depending on the usage scenario, the TDP can vary between 7.5 (cTDP Down) and 25 Watts.

SeriesIntel Core i7
CodenameWhiskey Lake-U
Series: Core i7 Whiskey Lake-U
Intel Core i7-8665U compare1.9 - 4.8 GHz4 / 88 MB
» Intel Core i7-8565U1.8 - 4.6 GHz4 / 88 MB
Clock Rate1800 - 4600 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 MB
Number of Cores / Threads4 / 8
Power Consumption (TDP = Thermal Design Power)15 Watt
Manufacturing Technology14 nm
SocketBGA1528
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
GPUIntel UHD Graphics 620 (300 - 1150 MHz)
64 Bit64 Bit support
Architecturex86
Announcement Date08/21/2018

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
41.5 pt (42%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 342     avg: 409     median: 411.5 (64%)     max: 472 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 954     avg: 1257     median: 1181.4 (11%)     max: 1645 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 452     avg: 612     median: 608.5 (14%)     max: 815 Points
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Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 138.25     avg: 173     median: 173 (64%)     max: 193 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 4.09     avg: 6.3     median: 6.8 (14%)     max: 7.4 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.65     avg: 1.8     median: 1.9 (61%)     max: 2.16 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 2682     avg: 6571     median: 6644 (59%)     max: 8906 points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 13806     avg: 17608     median: 16760 (27%)     max: 23118 points
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
min: 10531     avg: 17993     median: 18860 (15%)     max: 24847 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 2029     avg: 4558     median: 4737 (31%)     max: 5923 MIPS
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 3.24     avg: 4.7     median: 4.7 (15%)     max: 5.5 fps
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