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

Intel Core i7-9750H

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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 i7-8557U

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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.

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Intel Core i7-9750HIntel Core i7-8557U
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
2600 - 4500 MHz1700 - 4500 MHz
12 MB8 MB
6 / 124 / 8
45 28
14 14
FCBGA1440FCBGA1528
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2
iGPUIntel UHD Graphics 630 (350 - 1150 MHz)Intel Iris Plus Graphics 645 (300 - 1150 MHz)
256 KB
1 MB
100 °C
Intel Core i7 8557U

Cinebench R20 - CPU (Single Core)
min: 416     avg: 440.5     median: 437 (85%)     max: 468 Points
Cinebench R20 - CPU (Multi Core)
min: 2051     avg: 2588.3     median: 2608 (38%)     max: 3110 Points
Cinebench R15 - CPU Multi 64Bit
min: 964     avg: 1182.2     median: 1185 (27%)     max: 1306 Points
Cinebench R15 - CPU Single 64Bit
min: 170     avg: 183.5     median: 183 (84%)     max: 194 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 11     avg: 12.8     median: 13 (30%)     max: 14 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1     avg: 2.1     median: 2 (100%)     max: 2 Points
Cinebench R10 - Rendering Single 32Bit
min: 6659     avg: 6917     median: 6936 (71%)     max: 7214 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 28251     avg: 33647.1     median: 34069 (52%)     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 (88%)     max: 9081 Points
WinRAR - Result
6631 KB/s (78%)
7-Zip 18.03 - 7z b 4
min: 28512     avg: 32291.4     median: 33363 (32%)     max: 35174 MIPS
7-Zip 18.03 - 7z b 4 -mmt1
min: 4657     avg: 4880.9     median: 4921 (71%)     max: 5042 MIPS
X264 HD Benchmark 4.0 - Pass 2
69.6 fps (39%)
X264 HD Benchmark 4.0 - Pass 1
218.6 fps (81%)
HWBOT x265 Benchmark v2.2 - 4k Preset
min: 7     avg: 8.6     median: 9 (30%)     max: 9 fps
TrueCrypt - Serpent Mean 100MB
0.8 GB/s (38%)
TrueCrypt - Twofish Mean 100MB
1.3 GB/s (43%)
TrueCrypt - AES Mean 100MB
7.3 GB/s (37%)
Blender 2.79 *
min: 391     avg: 436.8     median: 415 (4%)     max: 486 Seconds
3DMark 06 - CPU
min: 10352     avg: 10923.5     median: 10944 (73%)     max: 11365 Points
Super Pi mod 1.5 XS 1M *
8.5 Seconds (2%)
Super Pi mod 1.5 XS 2M *
min: 18     avg: 18.9     median: 18 (1%)     max: 20 Seconds
Super Pi Mod 1.5 XS 32M *
min: 450     avg: 471.8     median: 467 (2%)     max: 502 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 35262     avg: 41818.5     median: 42706 (60%)     max: 46599 Points
3DMark 11 - Performance Physics 1280x720
min: 9745     avg: 12881.4     median: 13075 (67%)     max: 14337 points
3DMark - Ice Storm Standard Physics 1280x720
min: 54125     avg: 58740.8     median: 58809 (38%)     max: 60819 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 53777     avg: 58718.9     median: 58661 (70%)     max: 60985 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 57138     avg: 59160.8     median: 59065 (68%)     max: 61319 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 8293     avg: 10707.8     median: 11077 (28%)     max: 11708 Points
3DMark - Fire Strike Physics 1920x1080
min: 13972     avg: 16393.7     median: 16730 (51%)     max: 17788 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 21185     avg: 22612.9     median: 22875 (28%)     max: 23587 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 4143     avg: 4258.4     median: 4263 (87%)     max: 4428 Points
Geekbench 4.0 - 64 Bit Multi-Core Score
min: 24370     avg: 24659.5     median: 24659 (82%)     max: 24949 Points
Geekbench 4.0 - 64 Bit Single-Core Score
min: 5377     avg: 5569.5     median: 5569 (93%)     max: 5762 Points
Geekbench 4.4 - 64 Bit Single-Core Score
min: 4440     avg: 5214.9     median: 5266 (83%)     max: 5476 Points
Geekbench 4.4 - 64 Bit Multi-Core Score
min: 17054     avg: 21790.9     median: 22699 (39%)     max: 25043 Points
Geekbench 5 - 64 Bit Single-Core Score
min: 1169     avg: 1188     median: 1171 (87%)     max: 1224 Points
Geekbench 5 - 64 Bit Multi-Core Score
min: 4957     avg: 5410.3     median: 5245 (31%)     max: 6029 Points
Mozilla Kraken 1.1 - Total Score *
min: 0     avg: 1077.4     median: 1071 (2%)     max: 1713 ms
Sunspider - 1.0 Total Score *
min: 82     avg: 84.3     median: 84 (1%)     max: 86 ms
Octane V2 - Total Score
min: 22874     avg: 36045.3     median: 36273 (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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Redaktion, 2017-09- 8 (Update: 2017-09-11)