Atom x5-E3940 vs Ultra 7 155H
Aggregate performance score
Core Ultra 7 155H outperforms Atom x5-E3940 by a whopping 1185% based on our aggregate benchmark results.
Primary details
Comparing Core Ultra 7 155H and Atom x5-E3940 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 433 | 2324 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Meteor Lake-H | 5x Intel Atom |
| Power efficiency | 53.40 | 11.63 |
| Architecture codename | Meteor Lake-H (2023) | Apollo Lake (2014−2016) |
| Release date | 14 December 2023 (1 year ago) | 30 August 2014 (10 years ago) |
| Launch price (MSRP) | $503 | no data |
Detailed specifications
Core Ultra 7 155H and Atom x5-E3940 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) | 4 (Quad-Core) |
| Threads | 22 | 4 |
| Base clock speed | 3.8 GHz | 1.6 GHz |
| Boost clock speed | 4.8 GHz | 1.8 GHz |
| L1 cache | 112 KB (per core) | 56K (per core) |
| L2 cache | 2 MB (per core) | 2 MB (shared) |
| L3 cache | 24 MB (shared) | 0 KB |
| Chip lithography | 7 nm | 14 nm |
| Maximum core temperature | 110 °C | no data |
| Maximum case temperature (TCase) | no data | 103 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
Compatibility
Information on Core Ultra 7 155H and Atom x5-E3940 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 (Uniprocessor) |
| Socket | Intel BGA 2049 | Intel BGA 1296 |
| Power consumption (TDP) | 28 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 155H and Atom x5-E3940. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | + | - |
Security technologies
Core Ultra 7 155H and Atom x5-E3940 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 155H and Atom x5-E3940 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155H and Atom x5-E3940. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR3-1866 |
| Maximum memory size | no data | 8 GB |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel Arc 8-Cores iGPU ( - 2250 MHz) | Intel HD Graphics 500 |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 155H and Atom x5-E3940.
| PCIe version | 5.0 | 2.0 |
| PCI Express lanes | 8 | 4 |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Pros & cons summary
| Performance score | 15.81 | 1.23 |
| Integrated graphics card | 18.48 | 0.77 |
| Recency | 14 December 2023 | 30 August 2014 |
| Physical cores | 16 | 4 |
| Threads | 22 | 4 |
| Chip lithography | 7 nm | 14 nm |
| Power consumption (TDP) | 28 Watt | 10 Watt |
Ultra 7 155H has a 1185.4% higher aggregate performance score, 2300% faster integrated GPU, an age advantage of 9 years, 300% more physical cores and 450% more threads, and a 100% more advanced lithography process.
Atom x5-E3940, on the other hand, has 180% lower power consumption.
The Core Ultra 7 155H is our recommended choice as it beats the Atom x5-E3940 in performance tests.
Should you still have questions on choice between Core Ultra 7 155H and Atom x5-E3940, ask them in Comments section, and we shall answer.
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