EPYC 7251 vs Ultra 7 155H

VS

Aggregate performance score

Core Ultra 7 155H
2023
16 cores / 22 threads, 28 Watt
15.82
+68.3%
EPYC 7251
2017
8 cores / 16 threads, 120 Watt
9.40

Core Ultra 7 155H outperforms EPYC 7251 by an impressive 68% based on our aggregate benchmark results.

Primary details

Comparing Core Ultra 7 155H and EPYC 7251 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking433813
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data2.85
Market segmentLaptopServer
SeriesIntel Meteor Lake-HAMD EPYC
Power efficiency53.477.41
Architecture codenameMeteor Lake-H (2023)Naples (2017−2018)
Release date14 December 2023 (1 year ago)29 June 2017 (7 years ago)
Launch price (MSRP)$503$574

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core Ultra 7 155H and EPYC 7251 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 cores16 (Hexadeca-Core)8 (Octa-Core)
Threads2216
Base clock speed3.8 GHz2.1 GHz
Boost clock speed4.8 GHz2.9 GHz
Multiplierno data21
L1 cache112 KB (per core)96K (per core)
L2 cache2 MB (per core)512K (per core)
L3 cache24 MB (shared)32 MB (shared)
Chip lithographyIntel 4 nm14 nm
Die sizeno data192 mm2
Maximum core temperature110 °Cno data
Number of transistorsno data4,800 million
64 bit support++
Windows 11 compatibilityno data-
Unlocked multiplier-+

Compatibility

Information on Core Ultra 7 155H and EPYC 7251 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 configuration12 (Multiprocessor)
SocketFCBGA2049TR4
Power consumption (TDP)28 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155H and EPYC 7251. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2no data
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)+no data
Speed Shift+no data
Hyper-Threading Technology+no data
TSX+-
Thermal Monitoring+-
Flex Memory Access+no data
Turbo Boost Max 3.0+no data
Deep Learning Boost+-
Supported AI Software FrameworksOpenVINO™, WindowsML, ONNX RT-

Security technologies

Core Ultra 7 155H and EPYC 7251 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 Core Ultra 7 155H and EPYC 7251 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 Ultra 7 155H and EPYC 7251. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR4 Eight-channel
Maximum memory size96 GB2 TiB
Max memory channels28
Maximum memory bandwidthno data153.652 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® Arc™ graphicsno data
Quick Sync Video+-
Graphics max frequency2.25 GHzno data

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155H and EPYC 7251 integrated GPUs.

Number of displays supported4no data

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155H and EPYC 7251 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.44096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)no data
Max resolution over eDP3840x2400 @ 120Hzno data
Max resolution over DisplayPort7680 x 4320 @ 60Hzno data

Graphics API support

APIs supported by Core Ultra 7 155H and EPYC 7251 integrated GPUs, sometimes API versions are included.

DirectX12.2no data
OpenGL4.6no data

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155H and EPYC 7251.

PCIe version5.03.0
PCI Express lanes8128
PCI support5.0 and 4.0no data

Synthetic benchmark performance

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


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.

Ultra 7 155H 15.82
+68.3%
EPYC 7251 9.40

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ultra 7 155H 25131
+68.3%
EPYC 7251 14935

Gaming performance

Pros & cons summary


Performance score 15.82 9.40
Recency 14 December 2023 29 June 2017
Physical cores 16 8
Threads 22 16
Power consumption (TDP) 28 Watt 120 Watt

Ultra 7 155H has a 68.3% higher aggregate performance score, an age advantage of 6 years, 100% more physical cores and 37.5% more threads, and 328.6% lower power consumption.

The Core Ultra 7 155H is our recommended choice as it beats the EPYC 7251 in performance tests.

Be aware that Core Ultra 7 155H is a notebook processor while EPYC 7251 is a server/workstation one.


Should you still have questions on choice between Core Ultra 7 155H and EPYC 7251, ask them in Comments section, and we shall answer.

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Intel Core Ultra 7 155H
Core Ultra 7 155H
AMD EPYC 7251
EPYC 7251

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Community ratings

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Questions & comments

Here you can ask a question about Core Ultra 7 155H or EPYC 7251, agree or disagree with our judgements, or report an error or mismatch.