Intel Core i5-8400H vs Intel Core i5-9400H

Intel Core i5-8400H

► remove Intel 8400H

The Intel Core i5-8400H is a high-end processor for laptops with four cores based on the Coffee Lake architecture and will be announced early 2018. The processor clocks at between 2.5 and 4.2 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.

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 i5-8400H should perform similar as the older Core i7-7920HQ (3.1 - 4.1 GHz). The faster Coffee Lake CPUs, like the Core i7-8750H offers two additional cores and is therefore up to 50% faster in multithreaded benchmarks. Still, the performance of the i5-8400H 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 (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.

Intel Core i5-9400H

► remove Intel 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 i5-8400HIntel Core i5-9400H
Intel Core i5Intel Core i5
Coffee LakeCoffee Lake
: Core i5 Coffee Lake
Intel Core i5-9400H2500 - 4300 MHz4 / 88 MB
» Intel Core i5-8400H2500 - 4200 MHz4 / 88 MB
Intel Core i5-9300H (compare)2400 - 4100 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 i5-8279U (compare)2400 - 4100 MHz4 / 86 MB
Intel Core i5-8259U (compare)2300 - 3800 MHz4 / 86 MB
Intel Core i5-8257U (compare)1400 - 3900 MHz4 / 86 MB
» Intel Core i5-9400H2500 - 4300 MHz4 / 88 MB
Intel Core i5-8400H2500 - 4200 MHz4 / 88 MB
Intel Core i5-9300H (compare)2400 - 4100 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 i5-8279U (compare)2400 - 4100 MHz4 / 86 MB
Intel Core i5-8259U (compare)2300 - 3800 MHz4 / 86 MB
Intel Core i5-8257U (compare)1400 - 3900 MHz4 / 86 MB
2500 - 4200 MHz2500 - 4300 MHz
256 KB256 KB
1 MB1 MB
8 MB8 MB
4 / 84 / 8
45 45
14 14
FCBGA1440FCBGA1440
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
iGPUIntel UHD Graphics 630 (350 - 1100 MHz)Intel UHD Graphics 630 (350 - 1100 MHz)
Intel Core i5 8400H

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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)