Ultra 7 155HL vs i7-1255U
Primary details
Comparing Core i7-1255U and Core Ultra 7 155HL processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 884 | not rated |
| Place by popularity | 78 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Alder Lake-M | no data |
| Power efficiency | 53.88 | no data |
| Architecture codename | Alder Lake-U (2022) | Meteor Lake-PS (2024) |
| Release date | 23 February 2022 (2 years ago) | 8 April 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $438 |
Detailed specifications
Core i7-1255U and Core Ultra 7 155HL 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) | 16 (Hexadeca-Core) |
| Threads | 12 | 22 |
| Base clock speed | 1.7 GHz | 1.4 GHz |
| Boost clock speed | 4.7 GHz | 4.8 GHz |
| L1 cache | 80K (per core) | 112 KB (per core) |
| L2 cache | 1.25 MB (per core) | 2 MB (per core) |
| L3 cache | 12 MB (shared) | 24 MB (shared) |
| Chip lithography | Intel 7 nm | 7 nm |
| Maximum core temperature | 100 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Core i7-1255U and Core Ultra 7 155HL 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 | FCBGA1744 | 1851 |
| Power consumption (TDP) | 15 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-1255U and Core Ultra 7 155HL. 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 | + | + |
| FMA | + | - |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Deep Learning Boost | + | - |
Security technologies
Core i7-1255U and Core Ultra 7 155HL 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 7 155HL 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 7 155HL. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4, DDR5 | DDR5 Depends on motherboard |
| Maximum memory size | 64 GB | no data |
| Max memory channels | 2 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Iris® Xe Graphics eligible | Arc Xe-LPG 128EU |
| Quick Sync Video | + | - |
| Graphics max frequency | 1.25 GHz | no data |
| Execution Units | 96 | no data |
Graphics interfaces
Available interfaces and connections of Core i7-1255U and Core Ultra 7 155HL integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core i7-1255U and Core Ultra 7 155HL integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz | no data |
| Max resolution over eDP | 4096 x 2304 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core i7-1255U and Core Ultra 7 155HL integrated GPUs, sometimes API versions are included.
| DirectX | 12.1 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-1255U and Core Ultra 7 155HL.
| PCIe version | 4.0 | 4.0 |
| PCI Express lanes | 20 | 8 |
Pros & cons summary
| Recency | 23 February 2022 | 8 April 2024 |
| Physical cores | 10 | 16 |
| Threads | 12 | 22 |
| Power consumption (TDP) | 15 Watt | 45 Watt |
i7-1255U has 200% lower power consumption.
Ultra 7 155HL, on the other hand, has an age advantage of 2 years, and 60% more physical cores and 83.3% more threads.
We couldn't decide between Core i7-1255U and Core Ultra 7 155HL. We've got no test results to judge.
Be aware that Core i7-1255U is a notebook processor while Core Ultra 7 155HL is a desktop one.
Should you still have questions on choice between Core i7-1255U and Core Ultra 7 155HL, ask them in Comments section, and we shall answer.
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