Atom C3958 vs Xeon Silver 4208
Aggregate performance score
Xeon Silver 4208 outperforms Atom C3958 by a whopping 186% based on our aggregate benchmark results.
Primary details
Comparing Xeon Silver 4208 and Atom C3958 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 988 | 1745 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 18.68 | 0.55 |
| Market segment | Server | Server |
| Series | Intel Xeon Silver | Intel Atom |
| Power efficiency | 7.88 | 7.56 |
| Architecture codename | Cascade Lake (2019−2020) | Goldmont (2016−2017) |
| Release date | 2 April 2019 (5 years ago) | 15 August 2017 (7 years ago) |
| Launch price (MSRP) | $417 | $449 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon Silver 4208 has 3296% better value for money than Atom C3958.
Detailed specifications
Xeon Silver 4208 and Atom C3958 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 | 8 (Octa-Core) | 16 (Hexadeca-Core) |
| Threads | 16 | 16 |
| Base clock speed | 2.1 GHz | 2 GHz |
| Boost clock speed | 3.2 GHz | 2 GHz |
| Multiplier | 21 | 20 |
| L1 cache | 512 KB | 896 KB |
| L2 cache | 8 MB | 16 MB |
| L3 cache | 11 MB | 16 MB |
| Chip lithography | 14 nm | 14 nm |
| Maximum core temperature | 78 °C | 83 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
Compatibility
Information on Xeon Silver 4208 and Atom C3958 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 | 2 (Multiprocessor) | 1 (Uniprocessor) |
| Socket | FCLGA3647 | FCBGA1310 |
| Power consumption (TDP) | 85 Watt | 31 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Silver 4208 and Atom C3958. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | + |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Deep Learning Boost | + | - |
Security technologies
Xeon Silver 4208 and Atom C3958 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | + |
| Secure Boot | no data | + |
| Secure Key | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Silver 4208 and Atom C3958 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4208 and Atom C3958. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2400 | DDR4: 2400 |
| Maximum memory size | 1 TB | 256 GB |
| Max memory channels | 6 | 2 |
| Maximum memory bandwidth | 115.212 GB/s | 38.397 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon Silver 4208 and Atom C3958.
| PCIe version | 3.0 | 3 |
| PCI Express lanes | 48 | 16 |
| USB revision | no data | 3 |
| Total number of SATA ports | no data | 16 |
| Max number of SATA 6 Gb/s Ports | no data | 16 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | 4x10/2.5/1 GBE |
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 | 7.35 | 2.57 |
| Recency | 2 April 2019 | 15 August 2017 |
| Physical cores | 8 | 16 |
| Power consumption (TDP) | 85 Watt | 31 Watt |
Xeon Silver 4208 has a 186% higher aggregate performance score, and an age advantage of 1 year.
Atom C3958, on the other hand, has 100% more physical cores, and 174.2% lower power consumption.
The Xeon Silver 4208 is our recommended choice as it beats the Atom C3958 in performance tests.
Should you still have questions on choice between Xeon Silver 4208 and Atom C3958, ask them in Comments section, and we shall answer.
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