Atom C3955 vs 7 245HX
Aggregate performance score
Core 7 245HX outperforms Atom C3955 by a whopping 614% 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 | 311 | 1849 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.24 |
| Market segment | Laptop | Server |
| Series | Intel Arrow Lake | Intel Atom |
| Power efficiency | no data | 4.35 |
| Designer | Intel | Intel |
| Architecture codename | Arrow Lake-HX (2025−2026) | Goldmont (2016−2017) |
| Release date | 1 April 2026 (less than a year ago) | 15 August 2017 (8 years ago) |
| Launch price (MSRP) | no data | $434 |
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 7 245HX and Atom C3955: 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 | 14 (Tetradeca-Core) | 16 (Hexadeca-Core) |
| Threads | 14 | 16 |
| Base clock speed | 2.6 GHz | 2.1 GHz |
| Boost clock speed | 5.1 GHz | 2.4 GHz |
| Multiplier | no data | 21 |
| L1 cache | no data | 896 KB |
| L2 cache | 24 MB | 16 MB |
| L3 cache | 26 MB | 16 MB |
| Chip lithography | 3 nm | 14 nm |
| Maximum core temperature | no data | 78 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
Compatibility
Information on Core 7 245HX and Atom C3955 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 (Uniprocessor) |
| Socket | no data | FCBGA1310 |
| Power consumption (TDP) | no data | 32 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 7 245HX and Atom C3955. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| QuickAssist | no data | - |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | - |
Security technologies
Core 7 245HX and Atom C3955 technologies aimed at improving security, for example, by protecting against hacks.
| EDB | no data | + |
| Secure Boot | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 7 245HX and Atom C3955 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 7 245HX and Atom C3955. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4: 2400 |
| Maximum memory size | no data | 256 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 38.397 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Graphics 3-Core iGPU (Arrow Lake) (300 - 1800 MHz) | no data |
Peripherals
Specifications and connection of peripherals supported by Core 7 245HX and Atom C3955.
| PCIe version | no data | 3 |
| PCI Express lanes | no data | 16 |
| USB revision | no data | 3 |
| Total number of SATA ports | no data | 16 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | 4x10/2.5/1 GBE |
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 | 24.20 | 3.39 |
| Recency | 1 April 2026 | 15 August 2017 |
| Physical cores | 14 | 16 |
| Threads | 14 | 16 |
| Chip lithography | 3 nm | 14 nm |
7 245HX has a 614% higher aggregate performance score, an age advantage of 8 years, and a 367% more advanced lithography process.
Atom C3955, on the other hand, has 14% more physical cores and 14% more threads.
The Intel Core 7 245HX is our recommended choice as it beats the Intel Atom C3955 in performance tests.
Be aware that Core 7 245HX is a notebook processor while Atom C3955 is a server/workstation one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
