Core i7-8665U Benchmarks & Performance Report

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Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i7-8665U based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,879 Rank: 972

Rank	Name	Score	Visual
968	Core i5-4440	4,882	+0.1%
969	Core i5-7Y57	4,881	+0%
970	Core i7-4702HQ	4,881	+0%
971	Core i5-6360U	4,879	+0%
972	Core i7-8665U	4,879
973	Xeon E5-2650L v4	4,878	+-0%
974	Core i7-3820QM	4,877	+-0%
975	Core i7-4702MQ	4,877	+-0%
976	Xeon E5-2470 v2	4,875	-0.1%
977	Core M3-7Y32	4,874	-0.1%

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Multicore Score

Multicore performance score for Core i7-8665U based on multi-threaded benchmark results.

4,799 Rank: 844

Rank	Name	Score	Visual
840	Ryzen 5 3550H	4,801	+0%
841	Core i5-8259U	4,801	+0%
842	Core i7-8559U	4,800	+0%
843	Core i7-6700TE	4,800	+0%
844	Core i7-8665U	4,799
845	Core i7 965	4,796	-0.1%
846	Atom C3955	4,795	-0.1%
847	Xeon E3-1271 v3	4,795	-0.1%
848	Core i7-4702HQ	4,795	-0.1%
849	Intel Core i3-390M	4,793	-0.1%

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Singlecore Score

Single-core performance score for Core i7-8665U based on single-threaded benchmark results.

4,932 Rank: 988

Rank	Name	Score	Visual
984	Core i3-4130T	4,935	+0.1%
985	Xeon D-1527	4,934	+0%
986	Core i7-3770S	4,934	+0%
987	Ryzen Threadripper 3990X	4,933	+0%
988	Core i7-8665U	4,932
989	Ryzen 5 2500U	4,931	+-0%
990	Core i7-3820	4,927	-0.1%
991	Core i7-3720QM	4,926	-0.1%
992	Xeon E5-2650 v4	4,923	-0.2%
993	Pentium G3450	4,922	-0.2%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i7-8665U based on integer math, floating point math, and prime number computation benchmarks.

4,665 Rank: 774

Rank	Name	Score	Visual
770	Ryzen 5 1400	4,667	+0%
771	Xeon X5650	4,667	+0%
772	Core i7-6820HQ	4,666	+0%
773	Ryzen 5 2400GE	4,666	+0%
774	Core i7-8665U	4,665
775	Xeon E3-1225 v3	4,665	+0%
776	Xeon E3-1230 V2	4,665	+0%
777	Xeon Silver 4112	4,664	+-0%
778	Atom C3858	4,664	+-0%
779	Core i5-4690K	4,664	+-0%

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Data Processing

Aggregated score for Core i7-8665U based on data encryption, data compression, and string sorting benchmarks.

4,626 Rank: 839

Rank	Name	Score	Visual
835	Core i7-8650U	4,628	+0%
836	Xeon E3-1265L v2	4,628	+0%
837	Core i7-4702HQ	4,627	+0%
838	Core i3-8100	4,626	+0%
839	Core i7-8665U	4,626
840	Ryzen 3 3300U	4,626	+0%
841	Core i7-6822EQ	4,625	+-0%
842	Core i5-7500	4,625	+-0%
843	Phenom II X6 1100T	4,625	+-0%
844	Core i5-6600	4,624	+-0%

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Physics & Compute

Aggregated score for Core i7-8665U based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,675 Rank: 787

Rank	Name	Score	Visual
783	Core i7-3820	4,676	+0%
784	Core i7-4722HQ	4,676	+0%
785	Ryzen 5 PRO 3400G	4,675	+0%
786	Xeon D-1622	4,675	+0%
787	Core i7-8665U	4,675
788	Core i5-4570	4,674	+-0%
789	Xeon E3-1275 V2	4,674	+-0%
790	Core i5-1035G1	4,672	-0.1%
791	Ryzen 5 2400G	4,672	-0.1%
792	Core i5-4570S	4,672	-0.1%

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Core i7-8665U Details

The Intel Core i7-8665U sits within the broader lineup of Intel's 8th generation mobile processors, designed for ultrabooks and thin-and-light laptops. Released in 2018, it's now over seven years old, placing it firmly in the category of older but still functional mobile CPUs. While no longer competitive with modern high-performance processors, it remains a capable performer for light to moderate workloads, especially in systems where power efficiency and integrated graphics are priorities.

Built on Intel's 14 nm manufacturing process, the Core i7-8665U features a quad-core, eight-thread design with a base clock of 1.9 GHz and a maximum turbo frequency of 4.8 GHz. This high single-core boost frequency enables it to deliver strong performance in tasks that rely on fast single-threaded execution. The processor is designed for the FCBGA1528 socket, typical of mobile platforms, and operates at a low 15 W TDP, which contributes to its energy efficiency and suitability for thin devices.

The Core i7-8665U integrates Intel's UHD Graphics 620, which operates at a base frequency of 300 MHz and can burst up to 1.15 GHz. This integrated GPU supports up to three displays and provides adequate performance for basic graphics tasks, such as web browsing, video playback, and light photo editing. While not suitable for modern gaming, it is sufficient for users who don't require discrete graphics.

In terms of memory support, the processor handles DDR4-2400 and LPDDR3-2133 at up to 32 GB of total system memory, with a maximum memory bandwidth of 37.5 GB/s. It supports two memory channels and PCIe 3.0 with up to 16 lanes, allowing for flexible expansion with modern storage and connectivity options.

The CPU supports a range of Intel technologies, including Hyper-Threading, Intel vPro, VT-x, VT-d, and AES-NI, making it suitable for business and productivity environments. It also includes features like Intel SpeedStep and Secure Key, enhancing both performance and security.

In benchmark testing, the Core i7-8665U achieves an overall score of 4879, ranking #971 of 2060, with a single-core score of 4932 (#988) and a multicore score of 4799 (#844). While these results reflect its age, they still place it above many older mobile processors, such as the Core i7-4702HQ and Xeon E5-2650 v4. However, it falls behind modern competitors in both single-core and multicore performance, with top-tier processors like the Ryzen Threadripper 9995WX achieving over double the overall score.

As of March 2026, the Core i7-8665U is best suited for users who prioritize portability, battery life, and cost-effectiveness over raw performance. It remains a viable option for general computing, office work, and light multimedia tasks, but it is no longer recommended for demanding applications like video editing, 3D rendering, or gaming.