Ryzen 7 5800X vs Ultra 7 255H
Aggregate performance score
Core Ultra 7 255H outperforms Ryzen 7 5800X by a minimal 4% based on our aggregate benchmark results.
Primary details
Comparing Core Ultra 7 255H and Ryzen 7 5800X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 343 | 376 |
| Place by popularity | not in top-100 | 68 |
| Cost-effectiveness evaluation | no data | 24.13 |
| Market segment | Laptop | Desktop processor |
| Series | no data | AMD Ryzen 7 |
| Power efficiency | 14.93 | 15.76 |
| Architecture codename | no data | Vermeer (Zen 3) (2020−2022) |
| Release date | 1 January 2025 (less than a year ago) | 5 November 2020 (4 years ago) |
| Launch price (MSRP) | no data | $449 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core Ultra 7 255H and Ryzen 7 5800X 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) | 8 (Octa-Core) |
| Performance-cores | 6 | no data |
| Efficient-cores | 8 | no data |
| Low Power Efficient-cores | 2 | no data |
| Threads | 16 | 16 |
| Base clock speed | no data | 3.8 GHz |
| Boost clock speed | 5.1 GHz | 4.7 GHz |
| Multiplier | no data | 38 |
| L1 cache | no data | 64K (per core) |
| L2 cache | no data | 512K (per core) |
| L3 cache | 24 MB | 32 MB |
| Chip lithography | no data | 7 nm, 12 nm |
| Die size | no data | 2 x 80.7 sq. mm; I/O = 125 mm2 |
| Maximum core temperature | no data | 90 °C |
| Maximum case temperature (TCase) | no data | 95 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Core Ultra 7 255H and Ryzen 7 5800X 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 | 1 |
| Socket | FCBGA2049 | AM4 |
| Power consumption (TDP) | 115 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 255H and Ryzen 7 5800X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA |
| AES-NI | + | + |
| AVX | - | + |
| Speed Shift | + | no data |
| Hyper-Threading Technology | - | 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 255H and Ryzen 7 5800X 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 255H and Ryzen 7 5800X 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 255H and Ryzen 7 5800X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-6400 | DDR4 |
| Maximum memory size | 128 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | no data | 51.196 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Arc™ 140T GPU | - |
| Quick Sync Video | + | - |
| Graphics max frequency | 2.25 GHz | - |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 255H and Ryzen 7 5800X integrated GPUs.
| Number of displays supported | 4 | - |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 255H and Ryzen 7 5800X 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) | - |
| Max resolution over eDP | 3840x2400 @ 120Hz | - |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | - |
Graphics API support
APIs supported by Core Ultra 7 255H and Ryzen 7 5800X integrated GPUs, sometimes API versions are included.
| DirectX | 12.2 | - |
| OpenGL | 4.6 | - |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 255H and Ryzen 7 5800X.
| PCIe version | no data | 4.0 |
| PCI Express lanes | 28 | no data |
| PCI support | 5.0 and 4.0 | no 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.
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.
Pros & cons summary
| Performance score | 18.02 | 17.36 |
| Recency | 1 January 2025 | 5 November 2020 |
| Physical cores | 16 | 8 |
| Power consumption (TDP) | 115 Watt | 105 Watt |
Ultra 7 255H has a 3.8% higher aggregate performance score, an age advantage of 4 years, and 100% more physical cores.
Ryzen 7 5800X, on the other hand, has 9.5% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Core Ultra 7 255H and Ryzen 7 5800X.
Be aware that Core Ultra 7 255H is a notebook processor while Ryzen 7 5800X is a desktop one.
Should you still have questions on choice between Core Ultra 7 255H and Ryzen 7 5800X, ask them in Comments section, and we shall answer.
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