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Intel Core i5-9400H vs Intel Core i5-8279U vs Intel Core i7-8750H

Intel Core i5-9400H

► remove from comparison Intel i5-9400H

The Intel Core i5-9400H is a high-end processor for laptops with four cores based on the Coffee Lake architecture (2019 refresh, CFL-HR). The processor clocks at between 2.5 and 4.3 GHz (4.1 with 4 cores) and can execute up to eight 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 i5-8400H from 2018, the 9300H is only clocked slightly higher (+100 MHz CPU Turbo, +50 MHz GPU).

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).

Performance

The Intel Core i5-9400H should perform similar as the older Core i7-7920HQ (3.1 - 4.1 GHz). The faster Coffee Lake CPUs, like the Core i7-9750H offers two additional cores and is therefore up to 50% faster in multithreaded benchmarks. Still, the performance of the i5-9400H should be sufficient for even 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. 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.

Beware, the CPU was not yet released at the time of writing and the information is based on leaks and early price list information (e.g. by Intel or on Baidu).

Intel Core i5-8279U

► remove from comparison

The Intel Core i5-8279U is a quad-core SoC for notebooks based on the Coffee Lake architecture and was announced in the first quarter of 2019. Compared to its predecessor Core i5-7287U, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is 2.4 GHz, but the Turbo goes all the way up to 4.1 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 i7 model (e.g. Core i7-8559U) with eDRAM and 28 Watts, the i5-8279U only features 6 MB smart cache and a slower 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 above the 15W model Core i7-8650U. The i5-82769U should still be faster than the i7-8650U in practice thanks to the increased TDP, especially during sustained workloads. Compared to the similar named Intel Core i5-8269U, the 8279U offers a slightly lower performance (-200 MHz Turbo, -100 MHz base) although the name suggests otherwise.

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 300-1150 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 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.

Intel Core i7-8750H

► remove from comparison Intel i7-8750H

The Intel Core i7-8750H is a high-end processor for laptops with six cores based on the Coffee Lake architecture and will be announced early 2018. The processor clocks at between 2.2 and 4.1 GHz (4 GHz with 4 cores, 3.9 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.

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).

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 i7-8850H 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.

ModelIntel Core i5-9400HIntel Core i5-8279UIntel Core i7-8750H
SeriesIntel Coffee LakeIntel Coffee LakeIntel Coffee Lake
CodenameCoffee Lake-HCoffee Lake-UCoffee Lake-H
Series: Coffee Lake Coffee Lake-H
Intel Core i9-9980HK2.4 - 5 GHz8 / 16 cores16 MB L3
Intel Core i9-9880H2.3 - 4.8 GHz8 / 16 cores16 MB L3
Intel Core i9-8950HK2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2186M2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2276M2.8 - 4.7 GHz6 / 12 cores12 MB L3
Intel Core i7-9850H2.6 - 4.6 GHz6 / 12 cores12 MB L3
Intel Core i7-9750H2.6 - 4.5 GHz6 / 12 cores12 MB L3
Intel Xeon E-2176M2.7 - 4.4 GHz6 / 12 cores12 MB L3
Intel Core i7-8850H2.6 - 4.3 GHz6 / 12 cores9 MB L3
Intel Core i7-8750H2.2 - 4.1 GHz6 / 12 cores9 MB L3
Intel Core i5-9400H « 2.5 - 4.3 GHz4 / 8 cores8 MB L3
Intel Core i5-9300HF2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-9300H2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-8400H2.5 - 4.2 GHz4 / 8 cores8 MB L3
Intel Core i5-8300H2.3 - 4 GHz4 / 8 cores8 MB L3
Intel Core i3-8100H3 GHz4 / 4 cores8 MB L3
Intel Core i7-8559U2.7 - 4.5 GHz4 / 8 cores8 MB L3
Intel Core i7-8557U1.7 - 4.5 GHz4 / 8 cores8 MB L3
Intel Core i5-8269U2.6 - 4.2 GHz4 / 8 cores6 MB L3
Intel Core i5-8279U « 2.4 - 4.1 GHz4 / 8 cores6 MB L3
Intel Core i5-8259U2.3 - 3.8 GHz4 / 8 cores6 MB L3
Intel Core i5-8257U1.4 - 3.9 GHz4 / 8 cores6 MB L3
Intel Core i3-8109U3 - 3.6 GHz2 / 4 cores4 MB L3
Intel Core i9-9980HK2.4 - 5 GHz8 / 16 cores16 MB L3
Intel Core i9-9880H2.3 - 4.8 GHz8 / 16 cores16 MB L3
Intel Core i9-8950HK2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2186M2.9 - 4.8 GHz6 / 12 cores12 MB L3
Intel Xeon E-2276M2.8 - 4.7 GHz6 / 12 cores12 MB L3
Intel Core i7-9850H2.6 - 4.6 GHz6 / 12 cores12 MB L3
Intel Core i7-9750H2.6 - 4.5 GHz6 / 12 cores12 MB L3
Intel Xeon E-2176M2.7 - 4.4 GHz6 / 12 cores12 MB L3
Intel Core i7-8850H2.6 - 4.3 GHz6 / 12 cores9 MB L3
Intel Core i7-8750H « 2.2 - 4.1 GHz6 / 12 cores9 MB L3
Intel Core i5-9400H2.5 - 4.3 GHz4 / 8 cores8 MB L3
Intel Core i5-9300HF2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-9300H2.4 - 4.1 GHz4 / 8 cores8 MB L3
Intel Core i5-8400H2.5 - 4.2 GHz4 / 8 cores8 MB L3
Intel Core i5-8300H2.3 - 4 GHz4 / 8 cores8 MB L3
Intel Core i3-8100H3 GHz4 / 4 cores8 MB L3
Clock2500 - 4300 MHz2400 - 4100 MHz2200 - 4100 MHz
L1 Cache256 KB256 KB384 KB
L2 Cache1 MB1 MB1.5 MB
L3 Cache8 MB6 MB9 MB
Cores / Threads4 / 84 / 86 / 12
TDP45 Watt28 Watt45 Watt
Technology14 nm14 nm14 nm
SocketFCBGA1440FCBGA1528FCBGA1440
FeaturesDual-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 4.2Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel UHD Graphics 630 (350 - 1100 MHz)Intel Iris Plus Graphics 655 (300 - 1150 MHz)Intel UHD Graphics 630 (350 - 1100 MHz)
Architecturex86x86x86
Announced
max. Temp.100 °C100 °C
Manufacturerark.intel.comark.intel.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i7-8750H
31.2 pt (43%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
421 Points (47%)
min: 403     avg: 411.8     median: 412.5 (46%)     max: 418 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
1717 Points (4%)
min: 2142     avg: 2377     median: 2336.5 (6%)     max: 2707 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
823 Points (5%)
min: 743     avg: 750     median: 750 (5%)     max: 757 Points
min: 863     avg: 1113     median: 1116 (7%)     max: 1251 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 166     avg: 167.5     median: 167.5 (50%)     max: 169 Points
min: 163     avg: 172     median: 173 (52%)     max: 177 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
9.4 Points (12%)
min: 9.54     avg: 12.2     median: 12.3 (16%)     max: 13.54 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
1.9 Points (48%)
min: 1.89     avg: 2     median: 2 (49%)     max: 2 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
6551 Points (40%)
min: 6236     avg: 6479     median: 6471 (39%)     max: 6645 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
24096 Points (17%)
min: 29664     avg: 33163     median: 33595 (24%)     max: 35307 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 33944     avg: 42290     median: 43494 (30%)     max: 46384 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 8472     avg: 8542     median: 8498 (10%)     max: 8665 Points
wPrime 2.10 - wPrime 2.0 1024m *
266.1 s (3%)
min: 125.5     avg: 157.5     median: 156.8 (2%)     max: 180.5 s
wPrime 2.10 - wPrime 2.0 32m *
8.6 s (2%)
min: 4.35     avg: 7.1     median: 5.5 (1%)     max: 16.26 s
WinRAR - WinRAR 4.0
5862 Points (9%)
5310 Points (8%)
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
22683 MIPS (13%)
min: 28826     avg: 30674     median: 31144 (18%)     max: 33257 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
4276 MIPS (51%)
min: 4599     avg: 4621     median: 4629 (55%)     max: 4630 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
45.7 fps (16%)
min: 64.2     avg: 67.2     median: 67.2 (23%)     max: 70.2 fps
X264 HD Benchmark 4.0 - x264 Pass 1
190 fps (44%)
min: 193.5     avg: 200.3     median: 200.3 (46%)     max: 207.1 fps
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
6 fps (11%)
min: 7.56     avg: 8.2     median: 7.8 (14%)     max: 9.55 fps
TrueCrypt - TrueCrypt Serpent
0.7 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
1.2 GB/s (21%)
TrueCrypt - TrueCrypt AES
7 GB/s (18%)
Blender - Blender 2.79 BMW27 CPU *
627 Seconds (4%)
min: 395.5     avg: 456.2     median: 469.3 (3%)     max: 485.9 Seconds
3DMark 06 - CPU - 3DMark 06 - CPU
8830 Points (19%)
min: 7531     avg: 10078     median: 10294.5 (22%)     max: 10832 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
9.2 s (2%)
min: 8.98     avg: 9.3     median: 9.3 (2%)     max: 9.45 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
21.3 s (1%)
min: 20.26     avg: 21     median: 21.1 (1%)     max: 21.39 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
512 s (2%)
min: 509     avg: 524     median: 524 (2%)     max: 537 s
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 27882     avg: 36281     median: 37117 (32%)     max: 41516 Points
3DMark 11 - 3DM11 Performance Physics
min: 7869     avg: 11044     median: 11474.5 (31%)     max: 13112 Points
3DMark - 3DMark Ice Storm Physics
21476 Points (17%)
min: 43026     avg: 55905     median: 56773 (46%)     max: 58897 Points
3DMark - 3DMark Ice Storm Extreme Physics
21581 Points (18%)
min: 51146     avg: 56438     median: 56720 (46%)     max: 58704 Points
3DMark - 3DMark Ice Storm Unlimited Physics
24185 Points (20%)
min: 55371     avg: 57714     median: 57465.5 (48%)     max: 60233 Points
3DMark - 3DMark Cloud Gate Physics
7017 Points (18%)
min: 4876     avg: 9924     median: 10149 (26%)     max: 11320 Points
3DMark - 3DMark Fire Strike Standard Physics
10411 Points (19%)
min: 8551     avg: 15199     median: 15533 (28%)     max: 17219 Points
3DMark - 3DMark Time Spy CPU
3439 Points (14%)
min: 2859     avg: 5724     median: 5858 (25%)     max: 7037 Points
Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Single-Core
1050 Points (44%)
Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
4820 Points (9%)
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
4850 Points (48%)
min: 4669     avg: 4982     median: 5040 (50%)     max: 5146 Points
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
17643 Points (20%)
min: 17709     avg: 21069     median: 21648 (24%)     max: 23313 Points
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
min: 4548     avg: 4839     median: 4868.5 (66%)     max: 4997 Points
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
min: 17048     avg: 19665     median: 19875 (48%)     max: 22006 Points
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
min: 20725     avg: 21871     median: 21920 (39%)     max: 22665 Points
Geekbench 3 - Geekbench 3 32 Bit Single-Core
min: 3734     avg: 3995     median: 4008 (78%)     max: 4163 Points
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
740 ms (1%)
min: 695     avg: 1108     median: 1124 (1%)     max: 1272 ms
Sunspider - Sunspider 1.0 Total Score *
min: 77.5     avg: 82.3     median: 83 (1%)     max: 85.8 ms
Octane V2 - Octane V2 Total Score
44259 Points (40%)
min: 27460     avg: 34108     median: 34163 (31%)     max: 44549 Points
WebXPRT 3 - WebXPRT 3 Score
213 Points (44%)
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 0     avg: 67.1     median: 90.4 (16%)     max: 111 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 97     avg: 109.5     median: 109.5 (20%)     max: 122 Watt
Power Consumption - Cinebench R15 Multi Power Efficiency - external Monitor
min: 8.19     avg: 21     median: 12.6 (9%)     max: 42.3 Points per Watt

Average Benchmarks Intel Core i5-9400H → 100% n=2

Average Benchmarks Intel Core i5-8279U → 89% n=2

Average Benchmarks Intel Core i7-8750H → 133% n=2

- 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

v1.26
log 28. 09:16:50

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