Xeon Platinum 8458P vs Ultra 7 255H
Primary details
Comparing Core Ultra 7 255H and Xeon Platinum 8458P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 343 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Power efficiency | 14.93 | no data |
| Architecture codename | no data | Sapphire Rapids (2023−2024) |
| Release date | 1 January 2025 (less than a year ago) | 10 January 2023 (2 years ago) |
| Launch price (MSRP) | no data | $6,759 |
Detailed specifications
Core Ultra 7 255H and Xeon Platinum 8458P 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 | 16 (Hexadeca-Core) | 44 |
| Performance-cores | 6 | no data |
| Efficient-cores | 8 | no data |
| Low Power Efficient-cores | 2 | no data |
| Threads | 16 | 88 |
| Base clock speed | no data | 2.7 GHz |
| Boost clock speed | 5.1 GHz | 3.8 GHz |
| L1 cache | no data | 80K (per core) |
| L2 cache | no data | 2 MB (per core) |
| L3 cache | 24 MB | 82.5 MB |
| Chip lithography | no data | Intel 7 nm |
| Die size | no data | 4x 477 mm2 |
| Maximum case temperature (TCase) | no data | 78 °C |
| 64 bit support | + | + |
Compatibility
Information on Core Ultra 7 255H and Xeon Platinum 8458P 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 | 2 |
| Socket | FCBGA2049 | FCLGA4677 |
| Power consumption (TDP) | 115 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 255H and Xeon Platinum 8458P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | + | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | - | + |
| TSX | - | + |
| Thermal Monitoring | + | - |
| Turbo Boost Max 3.0 | + | no data |
| Deep Learning Boost | + | + |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN | - |
Security technologies
Core Ultra 7 255H and Xeon Platinum 8458P technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | + | no data |
| SGX | no data | Yes with Intel® SPS |
| OS Guard | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 255H and Xeon Platinum 8458P are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 255H and Xeon Platinum 8458P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-6400 | DDR5-4800, DDR5-4400 |
| Maximum memory size | 128 GB | 4 TB |
| Max memory channels | 2 | 8 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Arc™ 140T GPU | no data |
| Quick Sync Video | + | - |
| Graphics max frequency | 2.25 GHz | no data |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 255H and Xeon Platinum 8458P integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 255H and Xeon Platinum 8458P 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 (HDMI2.1 FRL) | no data |
| Max resolution over eDP | 3840x2400 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core Ultra 7 255H and Xeon Platinum 8458P integrated GPUs, sometimes API versions are included.
| DirectX | 12.2 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 255H and Xeon Platinum 8458P.
| PCIe version | no data | 5.0 |
| PCI Express lanes | 28 | 80 |
| PCI support | 5.0 and 4.0 | no data |
Pros & cons summary
| Recency | 1 January 2025 | 10 January 2023 |
| Physical cores | 16 | 44 |
| Threads | 16 | 88 |
| Power consumption (TDP) | 115 Watt | 350 Watt |
Ultra 7 255H has an age advantage of 1 year, and 204.3% lower power consumption.
Xeon Platinum 8458P, on the other hand, has 175% more physical cores and 450% more threads.
We couldn't decide between Core Ultra 7 255H and Xeon Platinum 8458P. We've got no test results to judge.
Be aware that Core Ultra 7 255H is a notebook processor while Xeon Platinum 8458P is a server/workstation one.
Should you still have questions on choice between Core Ultra 7 255H and Xeon Platinum 8458P, ask them in Comments section, and we shall answer.
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