Ultra 5 245K vs Atom x3-C3405
Primary details
Comparing Atom x3-C3405 and Core Ultra 5 245K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 173 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 78.88 |
| Market segment | Laptop | Desktop processor |
| Series | 3x Intel Atom | no data |
| Power efficiency | no data | 21.00 |
| Architecture codename | Silvermont (2015) | Arrow Lake-S (2024−2025) |
| Release date | no data | 24 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $309 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom x3-C3405 and Core Ultra 5 245K 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 | 4 (Quad-Core) | 14 (Tetradeca-Core) |
| Performance-cores | no data | 6 |
| Efficient-cores | no data | 8 |
| Threads | 4 | 14 |
| Base clock speed | 1.2 GHz | 4.2 GHz |
| Boost clock speed | 1.4 GHz | 5.2 GHz |
| Bus rate | no data | 159 MHz |
| L1 cache | no data | 112 KB (per core) |
| L2 cache | 2 MB | 3 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 28 nm | 3 nm |
| Die size | no data | 243 mm2 |
| Number of transistors | no data | 17,800 million |
| 64 bit support | + | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Atom x3-C3405 and Core Ultra 5 245K 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 | FCLGA1851 |
| Power consumption (TDP) | no data | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x3-C3405 and Core Ultra 5 245K. 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 | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| GPIO | 5 x I2C | no data |
| Deep Learning Boost | - | + |
| Supported AI Software Frameworks | - | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN |
Security technologies
Atom x3-C3405 and Core Ultra 5 245K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Boot | + | no data |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x3-C3405 and Core Ultra 5 245K are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x3-C3405 and Core Ultra 5 245K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | 1x32 LPDDR2/3 1066 | DDR5-6400 |
| Maximum memory size | 2 GB | 192 GB |
| Max memory channels | 1 | 2 |
| Maximum memory bandwidth | 4.2 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® Graphics |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 1.9 GHz |
Graphics interfaces
Available interfaces and connections of Atom x3-C3405 and Core Ultra 5 245K integrated GPUs.
| Number of displays supported | 1 | 4 |
| MIPI-DSI | + | no data |
Graphics image quality
Maximum display resolutions supported by Atom x3-C3405 and Core Ultra 5 245K integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4K @ 60Hz (HDMI 2.1 TMDS) 8K @ 60Hz (HDMI2.1 FRL) |
| Max resolution over eDP | 1280x800 | 4K @ 60Hz |
| Max resolution over DisplayPort | no data | 8K @ 60Hz |
Graphics API support
APIs supported by Atom x3-C3405 and Core Ultra 5 245K integrated GPUs, sometimes API versions are included.
| DirectX | 9.3 | 12 |
| OpenGL | ES 3.0 | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Atom x3-C3405 and Core Ultra 5 245K.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 20 |
| USB revision | 2.0 OTG | no data |
| Number of USB ports | 1 | no data |
| UART | 7 x USIF configurable | no data |
Pros & cons summary
| Physical cores | 4 | 14 |
| Threads | 4 | 14 |
| Chip lithography | 28 nm | 3 nm |
Ultra 5 245K has 250% more physical cores and 250% more threads, and a 833.3% more advanced lithography process.
We couldn't decide between Atom x3-C3405 and Core Ultra 5 245K. We've got no test results to judge.
Be aware that Atom x3-C3405 is a notebook processor while Core Ultra 5 245K is a desktop one.
Should you still have questions on choice between Atom x3-C3405 and Core Ultra 5 245K, ask them in Comments section, and we shall answer.
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