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Intel Core i7-8557U vs Intel Core i3-8100H

Intel Core i7-8557U

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The Intel Core i7-8557U is a quad-core SoC for notebooks based on the Coffee Lake architecture that was announced in the new entry level MacBook Pro 13 in mid 2019. Compared to its predecessor, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is only 1.7 GHz, but the Turbo goes all the way up to 4.5 GHz. It is also equipped with an Intel Iris Plus Graphics 645 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 slower Core i5 model with eDRAM and 15 Watts, the i5-8557U features 8 MB smart cache and the fastest 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

Clocked at up to 4.5 GHz, the Core i7-8557U should offer an excellent single thread performance. The multi core performance is greatly improved due to the two additional cores (compared to the predecessor) but may be limited by the 15 Watt TDP (especially for sustained workloads).

Graphics

The integrated Intel Iris Plus 645 Graphics is the GT3e model of the Coffee Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1150 MHz  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 15 Watts and therefore suited for thin and light laptops.

Intel Core i3-8100H

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The Intel Core i3-8100H is a mid-range processor for laptops with four cores based on the Coffee Lake architecture and was announced mid 2018. The processor clocks at 3 GHz (no Turbo Boost) and can execute up to four threads simultaneously (no Hyper-Threading). According to Intel, the CPU is manufactured in an improved 14nm (14nm++) process.

The Coffee Lake architecture is similar to Kaby Lake and differs only in the amount of cores (now six cores for the high end versions) and the improved 14nm process (14nm++ according to Intel).

Graphics

The integrated Intel UHD Graphics 630 iGPU is supposed to offer a slightly higher performance as its clock rate has been increased by 50 MHz (rumored). The architecture is identical to that of the Intel HD Graphics 630. We do expect a performance improvement, but as a low-end solution it will probably only display current games smoothly at reduced details - if at all.

Power Consumption

Intel specifies the TDP with 45 watts and therefore the i5 is only suited for big laptops with good cooling solutions. Using cTDP-down, the CPU can also be configured to 35 Watt resulting in a reduced performance.

show full text
ModelIntel Core i7-8557UIntel Core i3-8100H
SeriesIntel Coffee LakeIntel Coffee Lake
CodenameCoffee Lake-UCoffee Lake-H
Series: Coffee Lake Coffee Lake-H
Intel Core i7-8559U compare2.7 - 4.5 GHz4 / 8 cores8 MB L3
Intel Core i7-8557U « 1.7 - 4.5 GHz4 / 8 cores8 MB L3
Intel Core i5-8269U compare2.6 - 4.2 GHz4 / 8 cores6 MB L3
Intel Core i5-8279U compare2.4 - 4.1 GHz4 / 8 cores6 MB L3
Intel Core i5-8259U compare2.3 - 3.8 GHz4 / 8 cores6 MB L3
Intel Core i5-8257U compare1.4 - 3.9 GHz4 / 8 cores6 MB L3
Intel Core i3-8109U compare3 - 3.6 GHz2 / 4 cores4 MB L3
Intel Core i9-9980HK compare2.4 - 5 GHz8 / 16 cores16 MB L3
Intel Core i9-9880H compare2.3 - 4.8 GHz8 / 16 cores16 MB L3
Intel Core i9-8950HK compare2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2186M compare2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2276M compare2.8 - 4.7 GHz6 / 12 cores12 MB L3
Intel Core i7-9850H compare2.6 - 4.6 GHz6 / 12 cores12 MB L3
Intel Core i7-9750H compare2.6 - 4.5 GHz6 / 12 cores12 MB L3
Intel Xeon E-2176M compare2.7 - 4.4 GHz6 / 12 cores12 MB L3
Intel Core i7-8850H compare2.6 - 4.3 GHz6 / 12 cores9 MB L3
Intel Core i7-8750H compare2.2 - 4.1 GHz6 / 12 cores9 MB L3
Intel Core i5-9400H compare2.5 - 4.3 GHz4 / 8 cores8 MB L3
Intel Core i5-9300HF compare2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-9300H compare2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-8400H compare2.5 - 4.2 GHz4 / 8 cores8 MB L3
Intel Core i5-8300H compare2.3 - 4 GHz4 / 8 cores8 MB L3
Intel Core i3-8100H « 3 GHz4 / 4 cores8 MB L3
Clock1700 - 4500 MHz3000 MHz
L1 Cache256 KB256 KB
L2 Cache1 MB1 MB
L3 Cache8 MB8 MB
Cores / Threads4 / 84 / 4
TDP28 Watt45 Watt
Technology14 nm14 nm
max. Temp.100 °C100 °C
SocketFCBGA1528FCBGA1440
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2Dual-Channel DDR4 Memory Controller, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel Iris Plus Graphics 645 (300 - 1150 MHz)Intel UHD Graphics 630 (350 - 1000 MHz)
Architecturex86x86
Announced
Manufacturerark.intel.comark.intel.com

Benchmarks

Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Single-Core
1079 Points (46%)
Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
4119 Points (7%)

Average Benchmarks Intel Core i7-8557U → 0% n=

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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Redaktion, 2017-09- 8 (Update: 2023-07- 1)