Core i7-8559U

Details and Benchmarks for Intel Core i7-8559U

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

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 i7-8559U based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

5,250 Rank: 657
Rank Name Score Visual
653 Core i5-6600 5,254
+0.1%
654 Ryzen 3 PRO 2200GE 5,251
+0%
655 Core i5-8300H 5,251
+0%
656 Core i5-4670K 5,251
+0%
657 Core i7-8559U 5,250
658 Core i5-8400T 5,250
+0%
659 Core i7-4771 5,250
+0%
660 Core i7-3960X 5,249
+-0%
661 FX-8370E 5,249
+-0%
662 Core i5-10300H 5,248
+-0%

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Multicore Score

Multicore performance score for Core i7-8559U based on multi-threaded benchmark results.

4,800 Rank: 842
Rank Name Score Visual
838 Core i5-4590 4,803
+0.1%
839 Xeon E5-2450 v2 4,803
+0.1%
840 Ryzen 5 3550H 4,801
+0%
841 Core i5-8259U 4,801
+0%
842 Core i7-8559U 4,800
843 Core i7-6700TE 4,800
+0%
844 Core i7-8665U 4,799
+-0%
845 Core i7 965 4,796
-0.1%
846 Atom C3955 4,795
-0.1%
847 Xeon E3-1271 v3 4,795
-0.1%

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Singlecore Score

Single-core performance score for Core i7-8559U based on single-threaded benchmark results.

5,550 Rank: 516
Rank Name Score Visual
512 Ryzen 7 4700U 5,553
+0.1%
513 Ryzen 3 4300U 5,552
+0%
514 Xeon Platinum 8180 5,551
+0%
515 Xeon E5-2643 v4 5,551
+0%
516 Core i7-8559U 5,550
517 Xeon E3-1575M v5 5,550
+0%
518 Core i5-6600T 5,550
+0%
519 FX-8100 5,549
+-0%
520 Ryzen 5 1600X 5,546
-0.1%
521 Core i7-4790 5,545
-0.1%

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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 i7-8559U based on integer math, floating point math, and prime number computation benchmarks.

4,743 Rank: 590
Rank Name Score Visual
586 Core i5-8500B 4,746
+0.1%
587 Xeon E5-2650L v2 4,746
+0.1%
588 Core i7-5775R 4,744
+0%
589 Core i7-3960X 4,744
+0%
590 Core i7-8559U 4,743
591 Xeon D-1539 4,743
+0%
592 Xeon E3-1285 v6 4,742
+-0%
593 Xeon E5-2608L v4 4,742
+-0%
594 Xeon E-2144G 4,742
+-0%
595 Xeon E-2134 4,741
+-0%

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Data Processing

Aggregated score for Core i7-8559U based on data encryption, data compression, and string sorting benchmarks.

4,703 Rank: 669
Rank Name Score Visual
665 Xeon E3-1230 V5 4,708
+0.1%
666 Xeon E3-1271 v3 4,707
+0.1%
667 Xeon E5-2608L v4 4,705
+0%
668 Ryzen 5 PRO 2500U 4,704
+0%
669 Core i7-8559U 4,703
670 Ryzen 5 2500U 4,703
+0%
671 Xeon E5-2630L v2 4,703
+0%
672 Core i5-9500T 4,702
+-0%
673 Core i7-5775R 4,702
+-0%
674 Core i7-4790 4,701
+-0%

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Physics & Compute

Aggregated score for Core i7-8559U based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,828 Rank: 536
Rank Name Score Visual
532 Xeon W-2123 4,832
+0.1%
533 Ryzen 7 PRO 2700 4,831
+0.1%
534 Ryzen 7 PRO 1700 4,831
+0.1%
535 Core i7-9750H 4,829
+0%
536 Core i7-8559U 4,828
537 Xeon E3-1545M v5 4,828
+0%
538 Core i7-7740X 4,826
+-0%
539 Xeon E-2174G 4,826
+-0%
540 Core i9-8950HK 4,825
-0.1%
541 Ryzen 3 PRO 5350GE 4,825
-0.1%

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Core i7-8559U Details

The Intel Core i7-8559U stands out from its predecessors by combining a refined Coffee Lake-U Refresh architecture with enhanced integrated graphics and improved power efficiency, making it a compelling choice for mobile workstations and thin-and-light laptops. Launched in April 2018, this processor has aged gracefully in the mobile segment, maintaining strong relevance in 2026 despite newer generations having since entered the market. Its 14 nm process node ensures a balance between performance and thermal efficiency, with a TDP of just 28 W, making it ideal for devices where power consumption and heat dissipation are critical constraints.

Featuring four cores and eight threads thanks to Intel's Hyper-Threading technology, the Core i7-8559U delivers a base clock of 2.7 GHz and can boost up to 4.5 GHz on a single core, dropping slightly to 4.1 GHz under full load. This turbo capability ensures it can handle demanding applications and multitasking with ease. The processor includes 8 MB of L3 cache, 1 MB of L2 cache, and 0.25 MB of L1 cache, providing fast access to frequently used data and significantly reducing latency in memory-intensive tasks.

At the heart of its integrated graphics is the Iris Plus Graphics 655, which features 48 execution units and can reach a burst frequency of 1.2 GHz. This GPU supports up to three displays and is capable of handling light gaming and multimedia editing, offering a significant leap over previous generations. The processor supports DDR4-2400 and LPDDR3-2133 memory types, with a maximum capacity of 32 GB and a peak bandwidth of 35.76 GB/s, ensuring smooth data throughput for both productivity and content creation.

Intel's inclusion of advanced technologies like AVX2, AES-NI, and Intel Speed Shift enhances performance in encryption, multimedia encoding, and system responsiveness. The processor also supports virtualization features such as Intel VT-x and VT-d, enabling efficient virtual machine operations. However, its locked multiplier limits overclocking potential, a trade-off common in mobile processors.

In benchmark testing, the Core i7-8559U achieves a multicore score of 4,800, placing it at #842 among 2060 processors, and a single-core score of 5,550, ranking it #516. Its overall score of 5,250 positions it at #657, indicating solid performance in both everyday and intensive workloads. While it trails behind modern high-end CPUs, it holds its own against older mobile and desktop processors, such as the Core i7-965 and FX-8370E, and competes closely with contemporaries like the Ryzen 5 3550H and Core i5-8259U.

As of March 2026, the Core i7-8559U remains a capable mid-range mobile processor, particularly well-suited for business users, students, and professionals requiring portability without sacrificing too much performance. Its balanced architecture, efficient power draw, and integrated graphics make it a reliable option in the ever-evolving landscape of mobile computing.
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Intel Core i7-8559U

Main Specifications

Designer: Intel
Name: Core i7-8559U
Family: Core
Series: i7-8000
Model Number: i7-8559U
Cores: 4
Threads: 8
Base Frequency: 2700 MHz
Turbo Frequency (1 core): 4500 MHz
Turbo Frequency (2 cores): 4500 MHz
Turbo Frequency (4 cores): 4100 MHz
Clock Multiplier: 27x (locked)
Microarchitecture: Coffee Lake
Core Name: Coffee Lake U
Core Family: 6
Core Model: 142
Socket: BGA1356
Package: FCBGA-1528
Chipset: 300
Target Segment: Mobile
Max CPUs: 1
TDP: 28 W
Release Price: $431.00

Cache Specifications

L1 Cache: 256 KiB
L1 Instruction Cache: 128 KiB (8-way set associative)
L1 Data Cache: 128 KiB (8-way set associative)
L2 Cache: 1 MiB (4-way set associative)
L3 Cache: 8 MiB (16-way set associative)

Memory Specifications

Supported Memory Type: DDR4-2400 and LPDDR3-2133
Memory Channels: 2
Maximum Memory: 32 GB
Maximum Bandwidth: 35.76 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: 1x4, 2x2, 1x2+2x1, 4x1

Integrated Graphics

GPU: Iris Plus Graphics 655
GPU Designer: Intel
GPU Max Frequency: 1200 MHz
Execution Units: 48

Physical Specifications

Process: 14 nm
Die Area: 123 mm²
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST SST TXT vPro VT-x VT-d EPT MPX SGX Secure Key SMEP IPT AVX-512 AVX512F AVX512CD AVX512BW AVX512DQ AVX512VL TSX VMD Flex Memory NM KPT PTT MBE Ctrl DL Boost AVX512_VNNI MWT
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