Ultra 5 238V vs i7-1255U
Aggregate performance score
Core Ultra 5 238V outperforms Core i7-1255U by an impressive 64% based on our aggregate benchmark results.
Primary details
Comparing Core i7-1255U and Core Ultra 5 238V processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 896 | 525 |
| Place by popularity | 74 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Alder Lake-M | no data |
| Power efficiency | 53.82 | 78.10 |
| Architecture codename | Alder Lake-U (2022) | Lunar Lake (2024) |
| Release date | 23 February 2022 (2 years ago) | 24 September 2024 (less than a year ago) |
Detailed specifications
Core i7-1255U and Core Ultra 5 238V 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 | 10 (Deca-Core) | 8 (Octa-Core) |
| Performance-cores | no data | 4 |
| Low Power Efficient-cores | no data | 4 |
| Threads | 12 | 8 |
| Base clock speed | 1.7 GHz | 2.1 GHz |
| Boost clock speed | 4.7 GHz | 4.7 GHz |
| Bus rate | no data | 37 MHz |
| L1 cache | 80K (per core) | 192 KB (per core) |
| L2 cache | 1.25 MB (per core) | 2.5 MB (per core) |
| L3 cache | 12 MB (shared) | 8 MB (shared) |
| Chip lithography | 10 nm | 3 nm |
| Maximum core temperature | 100 °C | 100 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Core i7-1255U and Core Ultra 5 238V 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 | Intel BGA 1744 | FCBGA2833 |
| Power consumption (TDP) | 15 Watt | 17 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-1255U and Core Ultra 5 238V. 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 | + | + |
| FMA | + | - |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | no data | - |
| 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 i7-1255U and Core Ultra 5 238V technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-1255U and Core Ultra 5 238V are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-1255U and Core Ultra 5 238V. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4, DDR5 | DDR5 |
| Maximum memory size | no data | 32 GB |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz) | Intel Arc Graphics 130V |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 1.85 GHz |
Graphics interfaces
Available interfaces and connections of Core i7-1255U and Core Ultra 5 238V integrated GPUs.
| Number of displays supported | no data | 3 |
Graphics image quality
Maximum display resolutions supported by Core i7-1255U and Core Ultra 5 238V 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 Core i7-1255U and Core Ultra 5 238V 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 Core i7-1255U and Core Ultra 5 238V.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 20 | 4 |
| 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.
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.
Geekbench 6.3 Multi-Core
Pros & cons summary
| Performance score | 8.53 | 14.03 |
| Integrated graphics card | 9.21 | 11.60 |
| Recency | 23 February 2022 | 24 September 2024 |
| Physical cores | 10 | 8 |
| Threads | 12 | 8 |
| Chip lithography | 10 nm | 3 nm |
| Power consumption (TDP) | 15 Watt | 17 Watt |
i7-1255U has 25% more physical cores and 50% more threads, and 13.3% lower power consumption.
Ultra 5 238V, on the other hand, has a 64.5% higher aggregate performance score, 26% faster integrated GPU, an age advantage of 2 years, and a 233.3% more advanced lithography process.
The Core Ultra 5 238V is our recommended choice as it beats the Core i7-1255U in performance tests.
Should you still have questions on choice between Core i7-1255U and Core Ultra 5 238V, ask them in Comments section, and we shall answer.
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