EPYC 9555 vs i5-9400H

Primary details

Comparing Core i5-9400H and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1220	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Core i5	no data
Power efficiency	10.49	no data
Architecture codename	Coffee Lake-H (2018−2019)	Turin (2024)
Release date	23 April 2019 (5 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$9,826

Detailed specifications

Core i5-9400H and EPYC 9555 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	4 (Quad-Core)	64 (Tetrahexaconta-Core)
Threads	8	128
Base clock speed	2.5 GHz	3.2 GHz
Boost clock speed	4.3 GHz	4.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	25	no data
L1 cache	256 KB	80 KB (per core)
L2 cache	1 MB	1 MB (per core)
L3 cache	8 MB	256 MB (shared)
Chip lithography	14 nm	4 nm
Die size	126 mm2	8x 70.6 mm2
Maximum core temperature	100 °C	no data
Number of transistors	no data	66,520 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Core i5-9400H and EPYC 9555 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 (Uniprocessor)	2
Socket	FCBGA1440	SP5
Power consumption (TDP)	45 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-9400H and EPYC 9555. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
SIPP	+	-
Precision Boost 2	no data	+

Security technologies

Core i5-9400H and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-9400H and EPYC 9555 are enumerated here.

AMD-V	+	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-9400H and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	44.882 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 630	N/A
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.1 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-9400H and EPYC 9555 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i5-9400H and EPYC 9555 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096 x 2304@30Hz	no data
Max resolution over eDP	4096 x 2304@60Hz	no data
Max resolution over DisplayPort	4096 x 2304@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Core i5-9400H and EPYC 9555 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-9400H and EPYC 9555.

PCIe version	3.0	5.0
PCI Express lanes	16	128

Pros & cons summary

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Recency	23 April 2019	10 October 2024
Physical cores	4	64
Threads	8	128
Chip lithography	14 nm	4 nm
Power consumption (TDP)	45 Watt	360 Watt

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