i5-8400B vs Ultra 5 125H

Primary details

Comparing Core Ultra 5 125H and Core i5-8400B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	518	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Meteor Lake-H	Intel Core i5
Power efficiency	47.45	no data
Architecture codename	Meteor Lake-H (2023)	Coffee Lake (2017−2019)
Release date	14 December 2023 (less than a year ago)	2 April 2018 (6 years ago)
Launch price (MSRP)	$375	$182

Detailed specifications

Core Ultra 5 125H and Core i5-8400B basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	14 (Tetradeca-Core)	6 (Hexa-Core)
Threads	18	6
Base clock speed	3.6 GHz	2.8 GHz
Boost clock speed	4.5 GHz	4 GHz
Bus type	no data	DMI 3.0
Bus rate	no data	4 × 8 GT/s
Multiplier	no data	28
L1 cache	112 KB (per core)	384 KB
L2 cache	2 MB (per core)	1.5 MB
L3 cache	18 MB (shared)	9 MB
Chip lithography	Intel 4 nm	14 nm
Die size	no data	126 mm2
Maximum core temperature	110 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	no data	+

Compatibility

Information on Core Ultra 5 125H and Core i5-8400B compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1 (Uniprocessor)
Socket	FCBGA2049	FCBGA1440
Power consumption (TDP)	28 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 5 125H and Core i5-8400B. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Turbo Boost Max 3.0	-	no data
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 5 125H and Core i5-8400B technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
Secure Key	+	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 5 125H and Core i5-8400B are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 5 125H and Core i5-8400B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR4-2666
Maximum memory size	96 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ graphics	Intel UHD Graphics 630
Max video memory	no data	64 GB
Quick Sync Video	+	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	2.2 GHz	1.05 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core Ultra 5 125H and Core i5-8400B integrated GPUs.

Number of displays supported

4

3

Graphics image quality

Maximum display resolutions supported by Core Ultra 5 125H and Core i5-8400B integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	4096x2304@30Hz
Max resolution over eDP	3840x2400 @ 120Hz	4096x2304@60Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	4096x2304@60Hz

Graphics API support

APIs supported by Core Ultra 5 125H and Core i5-8400B integrated GPUs, sometimes API versions are included.

DirectX	12.2	12
OpenGL	4.6	4.5

Peripherals

Specifications and connection of peripherals supported by Core Ultra 5 125H and Core i5-8400B.

PCIe version	5.0	3.0
PCI Express lanes	28	16
PCI support	5.0 and 4.0	no data

Pros & cons summary

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Recency	14 December 2023	2 April 2018
Physical cores	14	6
Threads	18	6
Power consumption (TDP)	28 Watt	65 Watt

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Should you still have questions on choice between Core Ultra 5 125H and Core i5-8400B, ask them in Comments section, and we shall answer.

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