EPYC Embedded 9254 vs Ultra 7 251HX
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 261 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | Intel Arrow Lake | no data |
| Power efficiency | 6.99 | no data |
| Designer | Intel | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Arrow Lake-HX (2025−2026) | Genoa (2022−2023) |
| Release date | 1 April 2026 (less than a year ago) | 14 March 2023 (3 years ago) |
Detailed specifications
Basic parameters of Core Ultra 7 251HX and EPYC Embedded 9254: 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 | 18 (Octadeca-Core) | 24 (Tetracosa-Core) |
| Performance-cores | 6 | no data |
| Efficient-cores | 12 | no data |
| Threads | 18 | 48 |
| Base clock speed | 2.5 GHz | 2.9 GHz |
| Boost clock speed | 5.1 GHz | 4.15 GHz |
| L1 cache | no data | 64 KB (per core) |
| L2 cache | 30 MB | 1 MB (per core) |
| L3 cache | 30 MB | 128 MB (shared) |
| Chip lithography | 3 nm | 5 nm |
| Die size | no data | 4x 72 mm2 |
| Number of transistors | no data | 26,280 million |
| 64 bit support | + | + |
Compatibility
Information on Core Ultra 7 251HX and EPYC Embedded 9254 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 | no data | 2 |
| Socket | FCBGA2114 | SP5 |
| Power consumption (TDP) | 160 Watt | 200 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 251HX and EPYC Embedded 9254. 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 | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Precision Boost 2 | no data | + |
| Deep Learning Boost | + | - |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN | - |
Security technologies
Core Ultra 7 251HX and EPYC Embedded 9254 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 251HX and EPYC Embedded 9254 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 251HX and EPYC Embedded 9254. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-6400 | DDR5-4800 |
| Maximum memory size | 256 GB | no data |
| Max memory channels | 2 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Graphics | N/A |
| Quick Sync Video | + | - |
| Graphics max frequency | 1.8 GHz | no data |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 251HX and EPYC Embedded 9254 integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 251HX and EPYC Embedded 9254 integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz (HDMI 2.1 TMDS)7680 x 4320 @ 60Hz (HDMI 2.1 FRL) | no data |
| Max resolution over eDP | 3840 x 2400 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core Ultra 7 251HX and EPYC Embedded 9254 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 Ultra 7 251HX and EPYC Embedded 9254.
| PCIe version | 5.0 and 4.0 | 5.0 |
| PCI Express lanes | 24 | 128 |
Pros & cons summary
| Recency | 1 April 2026 | 14 March 2023 |
| Physical cores | 18 | 24 |
| Threads | 18 | 48 |
| Chip lithography | 3 nm | 5 nm |
| Power consumption (TDP) | 160 Watt | 200 Watt |
Ultra 7 251HX has an age advantage of 3 years, a 67% more advanced lithography process, and 25% lower power consumption.
EPYC Embedded 9254, on the other hand, has 33% more physical cores and 167% more threads.
We couldn't decide between Intel Core Ultra 7 251HX and AMD EPYC Embedded 9254. We've got no test results to judge.
Be aware that Core Ultra 7 251HX is a notebook processor while EPYC Embedded 9254 is a server/workstation one.
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