Processor U300 vs Ultra 7 251HX
Aggregate performance score
Core Ultra 7 251HX outperforms Processor U300 by a whopping 454% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 244 | 1495 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 10.12 |
| Market segment | Laptop | Laptop |
| Series | Intel Arrow Lake | Intel Raptor Lake-U |
| Power efficiency | no data | 14.07 |
| Designer | Intel | Intel |
| Manufacturer | no data | Intel |
| Architecture codename | Arrow Lake-HX (2025−2026) | Raptor Lake-U (2023−2025) |
| Release date | 1 April 2026 (less than a year ago) | 4 January 2023 (3 years ago) |
| Launch price (MSRP) | no data | $193 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
Detailed specifications
Basic parameters of Core Ultra 7 251HX and Processor U300: 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) | 5 (Penta-Core) |
| Threads | 18 | 6 |
| Base clock speed | 2.5 GHz | 1.2 GHz |
| Boost clock speed | 5.1 GHz | 4.4 GHz |
| Bus rate | no data | 55 MHz |
| L1 cache | no data | 80K (per core) |
| L2 cache | 30 MB | 1.25 MB (per core) |
| L3 cache | 30 MB | 8 MB (shared) |
| Chip lithography | 3 nm | 10 nm |
| Maximum core temperature | no data | 100 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
Compatibility
Information on Core Ultra 7 251HX and Processor U300 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 | 1 |
| Socket | no data | Intel BGA 1744 |
| Power consumption (TDP) | no data | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 251HX and Processor U300. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Core Ultra 7 251HX and Processor U300 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 251HX and Processor U300 are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 251HX and Processor U300. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4, DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Graphics 4-Core iGPU (Meteor / Arrow Lake) (300 - 1800 MHz) | Intel UHD Graphics Xe G4 48EUs ( - 1100 MHz) |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 251HX and Processor U300.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 8 |
Pros & cons summary
| Performance score | 28.50 | 5.14 |
| Integrated graphics card | 9.37 | 4.37 |
| Recency | 1 April 2026 | 4 January 2023 |
| Physical cores | 18 | 5 |
| Threads | 18 | 6 |
| Chip lithography | 3 nm | 10 nm |
Ultra 7 251HX has a 454% higher aggregate performance score, 114% faster integrated GPU, an age advantage of 3 years, 260% more physical cores and 200% more threads, and a 233% more advanced lithography process.
The Intel Core Ultra 7 251HX is our recommended choice as it beats the Intel Processor U300 in performance tests.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
