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Intel Core i5-8259U

The Intel Core i5-8259U is a quad-core SoC for notebooks based on the Coffee Lake architecture and was announced in April 2018. Compared to its predecessor Core i5-7267U, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is 2.3 GHz, but the Turbo goes all the way up to 3.8 GHz. It is also equipped with an Intel Iris Plus Graphics 655 GPU with 128 MB eDRAM, a dual-channel memory controller (DDR4) as well as VP9 and H.265 video decoding as well as encoding. The chip is still manufactured in a 14nm process with FinFET transistors.

Compared to faster Core i5 and i7 models with eDRAM and 28 Watts, the i5-8259U only features 6 MB smart cache and the slowest clock of the Iris Plus GPU.

Architecture

Intel basically uses the same micro architecture compared to Kaby Lake, so the per-MHz performance does not differ. The manufacturer only reworked the Speed Shift technology for faster dynamic adjustments of voltages and clocks, and the improved 14nm process allows much higher frequencies combined with better efficiency than before.

Performance

Considering the clocks of the Core i5-8259U, its performance should be between the 15W models Core i5-8350U and Core i7-8550U. The i5-8259U should still be faster than the i7-8550U in practice thanks to the increased TDP, especially during sustained workloads.

Graphics

The integrated Intel Iris Plus 655 Graphics is the GT3e model of the Kaby Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1050 MHz (slowest clock of the 655, the fastest is 1200 MHz in combination with the i7-8559U) and the performance is comparable to a GeForce 930M or 940MX thanks to fast eDRAM cache. However, there aren't any significant improvements compared to the old Iris Plus 650, so modern games can often not be played smoothly or only at the lowest or medium settings, respectively.

Contrary to Skylake, Kaby 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 an improved 14nm process with FinFET transistors, which improves the efficiency even further. Intel specifies the TDP with 28 Watts, which can be reduced to 23 Watts (cTDP Down) depending on the usage scenario. The TDP is pretty high compared to the common 15-Watt TDP for quad-core processors, but allows a better utilization of CPU and GPU Turbo.

SeriesIntel Core i5
CodenameCoffee Lake
Series: Core i5 Coffee Lake
Intel Core i5-8400H (compare)2500 - 4200 MHz4 / 88 MB
Intel Core i5-8300H (compare)2300 - 4000 MHz4 / 88 MB
Intel Core i5-8269U (compare)2600 - 4200 MHz4 / 86 MB
» Intel Core i5-8259U2300 - 3800 MHz4 / 86 MB
Clock Rate2300 - 3800 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache6 MB
Number of Cores / Threads4 / 8
Max. Power Consumption (TDP = Thermal Design Power)28 Watt
Manufacturing Technology14 nm
Max. Temperature100 °C
SocketFCBGA1528
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2
GPUIntel Iris Plus Graphics 655 (300 - 1050 MHz)
64 Bit64 Bit support
Announcement Date04/03/2018
Product Link (external)Intel Core i5 8259U

Benchmarks

Cinebench R15 - CPU Multi 64Bit
min: 608     avg: 647.5     median: 647.5 (21%)     max: 687 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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Reviews for the Intel Core i5 8259U processor

Apple MacBook Pro 13 2018 Touchbar i5 (Intel Iris Plus Graphics 655, 13.3")
» Apple MacBook Pro 13 2018 (Touch Bar, i5) Laptop Review - Review
» Apple MacBook Pro 13 2018 Touchbar i5 - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Core i5

» Intel Core i5 8400H
   2.5 GHz / 1 MB L2 + 8 MB L3
» Intel Core i5 8300H
   2.3 GHz / 1 MB L2 + 8 MB L3
» Intel Core i5 8305G
   2.8 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 8269U
   2.6 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 8259U
   2.3 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 7440HQ
   2.8 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 8265U
   1.6 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 7300HQ
   2.5 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 6440HQ
   2.6 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 6350HQ
   2.3 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 6300HQ
   2.3 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 8350U
   1.7 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 8250U
   1.6 GHz / 1 MB L2 + 6 MB L3
» Intel Core i5 7287U
   3.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 7360U
   2.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 7267U
   3.1 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 5350H
   3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 7300U
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6287U
   3.1 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 4340M
   2.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5287U
   2.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 7260U
   2.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 6267U
   2.9 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 4210H
   2.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4330M
   2.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4200H
   2.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5257U
   2.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4308U
   2.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4310M
   2.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 7200U
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4400E
   2.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4300M
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6360U
   2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 4210M
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6300U
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4288U
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4278U
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3380M
   2.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3360M
   2.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4200M
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3340M
   2.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6260U
   1.8 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 3320M
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4258U
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3230M
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6198DU
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 6200U
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5300U
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5350U
   1.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3210M
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2540M
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 8210Y
   1.6 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 8200Y
   1.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 4310U
   2 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4360U
   1.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5200U
   2.2 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 5250U
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4300U
   1.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4350U
   1.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2520M
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 7Y57
   1.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 7Y54
   1.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Core i5 2450M
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 580M
   2.67 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2435M
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2430M
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2415M
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2410M
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3437U
   1.9 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 560M
   2.67 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4210U
   1.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4260U
   1.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3427U
   1.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4402E
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4200U
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4250U
   1.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 480M
   2.67 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 540M
   2.53 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 460M
   2.53 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3337U
   1.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 520M
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 450M
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3317U
   1.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 430M
   2.26 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4300Y
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4302Y
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2557M
   1.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3439Y
   1.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4202Y
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4220Y
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4210Y
   1.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2467M
   1.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 3339Y
   1.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 4200Y
   1.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 2537M
   1.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 560UM
   1.33 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 470UM
   1.33 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 540UM
   1.2 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 520UM
   1.06 GHz / 0.5 MB L2 + 3 MB L3
» Intel Core i5 430UM
   1.2 GHz / 0.5 MB L2 + 3 MB L3

Surrounding CPUs

- Intel Core i7 6820HK
   2.7 GHz / 1 MB + 8 MB
- Intel Core i7 6820HQ
   2.7 GHz / 1 MB + 8 MB
- AMD Ryzen 5 1400
   3.2 GHz / 2 MB + 8 MB
- Intel Core i7 6770HQ
   2.6 GHz / 1 MB + 6 MB
- Intel Core i7 (Desktop) 6700T
   2.8 GHz / 1 MB + 6 MB
» Intel Core i5 8259U
   2.3 GHz / 1 MB L2 + 6 MB L3
+ Intel Core i7 4900MQ
   2.8 GHz / 1024 KB + 8192 KB
+ Intel Core i7 4960HQ
   2.6 GHz / 1024 KB + 6144 KB
+ Intel Core i7 6700HQ
   2.6 GHz / 1024 KB + 6144 KB
+ Intel Core i7 4810MQ
   2.8 GHz / 1024 KB + 6144 KB
+ Intel Core i7 4870HQ
   2.5 GHz / 1024 KB + 6144 KB
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > Intel Core i5-8259U SoC - Benchmarks and Specs
Klaus Hinum (Update: 2018-07-17)