Intel Core i7-8557U vs Intel Core i7-9750H

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 i7-9750H

► remove Intel i7-9750H

The Intel Core i7-9750H is a high-end processor for laptops with six cores based on the Coffee Lake architecture (2019 refresh, CFL-HR). The processor clocks at between 2.6 and 4.5 GHz (4 GHz with 6 cores) and can execute up to twelve threads simultaneously thanks to Hyper-Threading. According to Intel, the CPU is manufactured in an improved 14nm (14nm++) process. Compared to the predecessor, the Core i7-8750H, the 9750H offers improved clock rates and more L3 cache.

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

Performance

Due to the two additional cores, performance has increased by almost 50% compared to a similar clocked Kaby Lake processor like the Core i7-7820HQ (2.9 - 3.9 GHz). Single-core performance has not improved since its Kaby Lake predecessor. As a high-end model, the i7-9850H is suitable for the most demanding applications and games.

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 i7 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.

Intel Core i7-8557UIntel Core i7-9750H
Intel Core i7Intel Core i7
Coffee LakeCoffee Lake
: Core i7 Coffee Lake
Intel Core i7-9850H (compare)2600 - 4600 MHz6 / 1212 MB
Intel Core i7-9750H2600 - 4500 MHz6 / 1212 MB
Intel Core i7-8850H (compare)2600 - 4300 MHz6 / 129 MB
Intel Core i7-8750H (compare)2200 - 4100 MHz6 / 129 MB
Intel Core i7-8559U (compare)2700 - 4500 MHz4 / 88 MB
» Intel Core i7-8557U1700 - 4500 MHz4 / 88 MB
Intel Core i7-9850H (compare)2600 - 4600 MHz6 / 1212 MB
» Intel Core i7-9750H2600 - 4500 MHz6 / 1212 MB
Intel Core i7-8850H (compare)2600 - 4300 MHz6 / 129 MB
Intel Core i7-8750H (compare)2200 - 4100 MHz6 / 129 MB
Intel Core i7-8559U (compare)2700 - 4500 MHz4 / 88 MB
Intel Core i7-8557U1700 - 4500 MHz4 / 88 MB
1700 - 4500 MHz2600 - 4500 MHz
256 KB
1 MB
8 MB12 MB
4 / 86 / 12
28 45
14 14
100 °C
FCBGA1528FCBGA1440
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel Iris Plus Graphics 645 (300 - 1150 MHz)Intel UHD Graphics 630 (350 - 1150 MHz)
Intel Core i7 i7-8557U

Cinebench R20 - CPU (Single Core)
min: 416     avg: 440     median: 437 (85%)     max: 468 Points
Cinebench R20 - CPU (Multi Core)
min: 2017     avg: 2556     median: 2595 (29%)     max: 3110 Points
Cinebench R15 - CPU Multi 64Bit
min: 964     avg: 1178     median: 1181 (27%)     max: 1306 Points
010203040506070809010011012013014015016017018019020021022023024025026027028029030031032033034035036037038039040041042043044045046047048049050051052053054055056057058059060061062063064065066067068069070071072073074075076077078079080081082083084085086087088089090091092093094095096097098099010001010102010301040105010601070108010901100111011201130114011501160117011801190120012101220123012401250126012701280129013001310Tooltip
Cinebench R15 - CPU Single 64Bit
min: 170     avg: 183     median: 183 (84%)     max: 194 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 11.26     avg: 12.8     median: 13.1 (34%)     max: 14.11 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.96     avg: 2.1     median: 2.1 (84%)     max: 2.19 Points
Cinebench R10 - Rendering Single 32Bit
min: 6659     avg: 6895     median: 6902 (71%)     max: 7214 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 28251     avg: 33203     median: 33694 (57%)     max: 36304 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 37188     avg: 38074     median: 38074 (50%)     max: 38960 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 9069     avg: 9075     median: 9075 (84%)     max: 9081 Points
WinRAR - Result
6631 KB/s (78%)
7-Zip 18.03 - 7z b 4
min: 28512     avg: 32348     median: 33333 (36%)     max: 35174 MIPS
7-Zip 18.03 - 7z b 4 -mmt1
min: 4580     avg: 4829     median: 4840.5 (32%)     max: 5042 MIPS
X264 HD Benchmark 4.0 - Pass 2
69.6 fps (44%)
X264 HD Benchmark 4.0 - Pass 1
219 fps (78%)
HWBOT x265 Benchmark v2.2 - 4k Preset
min: 7.1     avg: 8.7     median: 9 (32%)     max: 9.6 fps
01020Tooltip
TrueCrypt - Serpent Mean 100MB
0.8 GB/s (39%)
TrueCrypt - Twofish Mean 100MB
1.3 GB/s (41%)
TrueCrypt - AES Mean 100MB
7.3 GB/s (37%)
Blender 2.79 - BMW27 CPU *
min: 389.5     avg: 440     median: 445.5 (5%)     max: 486.6 Seconds
R Benchmark 2.5 - Overall mean *
min: 0.608     avg: 0.6     median: 0.6 (21%)     max: 0.679 sec
3DMark 06 - CPU
min: 10212     avg: 10844     median: 10931 (73%)     max: 11365 Points
Super Pi mod 1.5 XS 1M *
min: 8.3     avg: 8.5     median: 8.4 (5%)     max: 8.96 Seconds
Super Pi mod 1.5 XS 2M *
min: 18.4     avg: 18.9     median: 18.5 (6%)     max: 20.09 Seconds
Super Pi Mod 1.5 XS 32M *
min: 450.5     avg: 472     median: 467.3 (8%)     max: 502.18 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 35262     avg: 41819     median: 42706.5 (60%)     max: 46599 Points
3DMark 11 - Performance Physics 1280x720
min: 9704     avg: 12756     median: 13027 (64%)     max: 14337 points
3DMark - Ice Storm Standard Physics 1280x720
min: 54125     avg: 58655     median: 58809 (38%)     max: 60819 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 53777     avg: 58536     median: 58638 (70%)     max: 60985 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 57138     avg: 58941     median: 58503.5 (68%)     max: 61319 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 8293     avg: 10679     median: 11008 (28%)     max: 11708 Points
3DMark - Fire Strike Physics 1920x1080
min: 12438     avg: 16318     median: 16682 (57%)     max: 17788 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 21185     avg: 22450     median: 22711.5 (40%)     max: 23587 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 4137     avg: 4243     median: 4252.5 (87%)     max: 4428 Points
Geekbench 4.0 - 64 Bit Single-Core Score
min: 5377     avg: 5570     median: 5569.5 (88%)     max: 5762 Points
Geekbench 4.0 - 64 Bit Multi-Core Score
min: 24370     avg: 24660     median: 24659.5 (69%)     max: 24949 Points
Geekbench 4.4 - 64 Bit Single-Core Score
min: 4440     avg: 5217     median: 5252 (83%)     max: 5511 Points
Geekbench 4.4 - 64 Bit Multi-Core Score
min: 17054     avg: 22098     median: 22951 (40%)     max: 25043 Points
Geekbench 5 - 64 Bit Single-Core Score
min: 1105     avg: 1164     median: 1159 (86%)     max: 1248 Points
Geekbench 5 - 64 Bit Multi-Core Score
min: 4812     avg: 5570     median: 5635 (34%)     max: 6230 Points
Geekbench 5.1 - 64 Bit Single-Core Score
min: 1117     avg: 1169     median: 1161 (87%)     max: 1251 Points
Geekbench 5.1 - 64 Bit Multi-Core Score
min: 4859     avg: 5571     median: 5909 (77%)     max: 6262 Points
Mozilla Kraken 1.1 - Total Score *
min: 0     avg: 1066     median: 1071.4 (5%)     max: 1713.4 ms
Sunspider - 1.0 Total Score *
min: 82.6     avg: 84.3     median: 84.1 (1%)     max: 86.6 ms
Octane V2 - Total Score
min: 22874     avg: 35957     median: 36259 (69%)     max: 39708 Points

Average Benchmarks Intel Core i7-9750H → 100%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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