Core Ultra 7 155H vs EPYC 7551

Primary details

Comparing EPYC 7551 and Core Ultra 7 155H processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	469	383
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.07	no data
Market segment	Server	Laptop
Series	AMD EPYC	Intel Meteor Lake-H
Architecture codename	Naples (2017−2018)	Meteor Lake-H
Release date	20 June 2017 (7 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$3,400	no data
Current price	$252 (0.1x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7551 and Core Ultra 7 155H 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	32 (Dotriaconta-Core)	16 (Hexadeca-Core)
Threads	64	22
Base clock speed	2 GHz	3.8 GHz
Boost clock speed	2 GHz	4.8 GHz
L1 cache	3 MB	112 KB (per core)
L2 cache	16 MB	2 MB (per core)
L3 cache	64 MB (shared)	24 MB (shared)
Chip lithography	14 nm	7 nm
Die size	213 mm2	no data
Number of transistors	19200 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	Yes	No

Compatibility

Information on EPYC 7551 and Core Ultra 7 155H 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	2 (Multiprocessor)	1
Socket	TR4	FCBGA2049
Power consumption (TDP)	180 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and Core Ultra 7 155H. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+
Speed Shift	no data	+
Hyper-Threading Technology	no data	+
TSX	no data	+
Thermal Monitoring	no data	+
Flex Memory Access	no data	+
SIPP	no data	-
Turbo Boost Max 3.0	no data	+
Status	no data	Launched

Security technologies

EPYC 7551 and Core Ultra 7 155H technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and Core Ultra 7 155H are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and Core Ultra 7 155H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5
Maximum memory size	2 TiB	96 GB
Max memory channels	8	2
Maximum memory bandwidth	170.671 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® Arc™ graphics
Quick Sync Video	no data	+
Graphics max frequency	no data	2.25 GHz

Graphics interfaces

Available interfaces and connections of EPYC 7551 and Core Ultra 7 155H integrated GPUs.

Number of displays supported

no data

4

Graphics image quality

Maximum display resolutions supported by EPYC 7551 and Core Ultra 7 155H integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by EPYC 7551 and Core Ultra 7 155H integrated GPUs, sometimes API versions are included.

DirectX	no data	12.2
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and Core Ultra 7 155H.

PCIe version	3.0	5.0
PCI Express lanes	128	28
PCI support	no data	5.0 and 4.0

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core Ultra 7 155H outperforms EPYC 7551 by 11% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	14.52	16.14
Recency	20 June 2017	14 December 2023
Physical cores	32	16
Threads	64	22
Chip lithography	14 nm	7 nm
Power consumption (TDP)	180 Watt	28 Watt

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Should you still have questions on choice between EPYC 7551 and Core Ultra 7 155H, ask them in Comments section, and we shall answer.

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