Atom E645C vs Ultra 7 155H
Primary details
Comparing Core Ultra 7 155H and Atom E645C processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 424 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Meteor Lake-H | no data |
| Power efficiency | 53.44 | no data |
| Architecture codename | Meteor Lake-H (2023) | Stellarton (2010) |
| Release date | 14 December 2023 (less than a year ago) | 22 November 2010 (14 years ago) |
| Launch price (MSRP) | $503 | no data |
Detailed specifications
Core Ultra 7 155H and Atom E645C 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 | 16 (Hexadeca-Core) | 1 (Single-Core) |
| Threads | 22 | 2 |
| Base clock speed | 3.8 GHz | no data |
| Boost clock speed | 4.8 GHz | 1 GHz |
| L1 cache | 112 KB (per core) | 64 KB (per core) |
| L2 cache | 2 MB (per core) | 512 KB (per core) |
| L3 cache | 24 MB (shared) | 0 KB |
| Chip lithography | Intel 4 nm | 45 nm |
| Die size | no data | 26 mm2 |
| Maximum core temperature | 110 °C | no data |
| Number of transistors | no data | 47 million |
| 64 bit support | + | - |
| Windows 11 compatibility | no data | - |
Compatibility
Information on Core Ultra 7 155H and Atom E645C 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 | FCBGA2049 | Intel BGA1466 |
| Power consumption (TDP) | 28 Watt | 4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 155H and Atom E645C. 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 | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Turbo Boost Max 3.0 | + | no data |
| Deep Learning Boost | + | - |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, ONNX RT | - |
Security technologies
Core Ultra 7 155H and Atom E645C technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 155H and Atom E645C 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 Core Ultra 7 155H and Atom E645C. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR2 |
| Maximum memory size | 96 GB | no data |
| Max memory channels | 2 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Arc™ graphics | Intel GMA 600 |
| Quick Sync Video | + | - |
| Graphics max frequency | 2.25 GHz | no data |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 155H and Atom E645C integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 155H and Atom E645C integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL) | no data |
| Max resolution over eDP | 3840x2400 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core Ultra 7 155H and Atom E645C integrated GPUs, sometimes API versions are included.
| DirectX | 12.2 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 155H and Atom E645C.
| PCIe version | 5.0 | no data |
| PCI Express lanes | 8 | no data |
| PCI support | 5.0 and 4.0 | no data |
Pros & cons summary
| Recency | 14 December 2023 | 22 November 2010 |
| Physical cores | 16 | 1 |
| Threads | 22 | 2 |
| Power consumption (TDP) | 28 Watt | 4 Watt |
Ultra 7 155H has an age advantage of 13 years, and 1500% more physical cores and 1000% more threads.
Atom E645C, on the other hand, has 600% lower power consumption.
We couldn't decide between Core Ultra 7 155H and Atom E645C. We've got no test results to judge.
Should you still have questions on choice between Core Ultra 7 155H and Atom E645C, ask them in Comments section, and we shall answer.
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