Ultra X9 378H vs 3 305
Aggregate performance score
Core Ultra X9 378H outperforms Core 3 305 by a whopping 148% 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 | 1088 | 349 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 13.26 | no data |
| Market segment | Laptop | Laptop |
| Series | no data | Intel Panther Lake |
| Power efficiency | 24.73 | 11.50 |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Wildcat Lake (2026) | Panther Lake (2026) |
| Release date | 16 April 2026 (less than a year ago) | 5 April 2026 (less than a year ago) |
| Launch price (MSRP) | $309 | no data |
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 3 305 and Core Ultra X9 378H: 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 | 6 (Hexa-Core) | 16 (Hexadeca-Core) |
| Performance-cores | no data | 4 |
| Efficient-cores | no data | 8 |
| Low Power Efficient-cores | no data | 4 |
| Threads | 6 | 16 |
| Base clock speed | 1.5 GHz | 1.6 GHz |
| Boost clock speed | 4.3 GHz | 5 GHz |
| L1 cache | 192 KB | no data |
| L2 cache | 2.5 MB | 12.5 MB |
| L3 cache | 6 MB (shared) | 18 MB |
| Chip lithography | 3 nm | 2 nm |
| Maximum core temperature | no data | 100 °C |
| 64 bit support | + | + |
Compatibility
Information on Core 3 305 and Core Ultra X9 378H 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 | no data |
| Socket | Intel BGA 1516 | FCBGA2540 |
| Power consumption (TDP) | 15 Watt | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 3 305 and Core Ultra X9 378H. 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 | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| 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 3 305 and Core Ultra X9 378H technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 3 305 and Core Ultra X9 378H are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 3 305 and Core Ultra X9 378H. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5, LPDDR5X | LPDDR5X-9600 |
| Maximum memory size | no data | 96 GB |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Xe3 Graphics (1 Xe) | Intel® Arc™ B390 GPU |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 2.5 GHz |
Graphics interfaces
Available interfaces and connections of Core 3 305 and Core Ultra X9 378H integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Core 3 305 and Core Ultra X9 378H integrated GPUs, including resolutions over different interfaces.
| Max resolution over eDP | no data | 3840 x 2400 @ 120Hz |
| Max resolution over DisplayPort | no data | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Core 3 305 and Core Ultra X9 378H integrated GPUs, sometimes API versions are included.
| DirectX | no data | DirectX 12 Ultimate |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Core 3 305 and Core Ultra X9 378H.
| PCIe version | 4.0 | 5.0 and 4.0 |
| PCI Express lanes | 6 | 12 |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 9.02 | 22.37 |
| Physical cores | 6 | 16 |
| Threads | 6 | 16 |
| Chip lithography | 3 nm | 2 nm |
| Power consumption (TDP) | 15 Watt | 80 Watt |
Core 3 305 has 433% lower power consumption.
Ultra X9 378H, on the other hand, has a 148% higher aggregate performance score, 167% more physical cores and 167% more threads, and a 50% more advanced lithography process.
The Intel Core Ultra X9 378H is our recommended choice as it beats the Intel Core 3 305 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.
