Atom C3955 vs Xeon E5-2699 v4
Aggregate performance score
Xeon E5-2699 v4 outperforms Atom C3955 by a whopping 330% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5-2699 v4 and Atom C3955 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 428 | 1484 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.56 | 0.97 |
| Market segment | Server | Server |
| Series | Intel Xeon E5 | Intel Atom |
| Power efficiency | 10.24 | 10.80 |
| Architecture codename | Broadwell (2015−2019) | Goldmont (2016−2017) |
| Release date | 20 June 2016 (8 years ago) | 15 August 2017 (7 years ago) |
| Launch price (MSRP) | $4,115 | $434 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon E5-2699 v4 has 164% better value for money than Atom C3955.
Detailed specifications
Xeon E5-2699 v4 and Atom C3955 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 | 22 (Docosa-Core) | 16 (Hexadeca-Core) |
| Threads | 44 | 16 |
| Base clock speed | 2.2 GHz | 2.1 GHz |
| Boost clock speed | 3.6 GHz | 2.4 GHz |
| Bus type | QPI | no data |
| Bus rate | 2 × 9.6 GT/s | no data |
| Multiplier | 22 | 21 |
| L1 cache | no data | 896 KB |
| L2 cache | 5.5 MB | 16 MB |
| L3 cache | 55 MB | 16 MB |
| Chip lithography | 14 nm | 14 nm |
| Die size | 456.12 mm2 | no data |
| Maximum core temperature | 79 °C | 78 °C |
| Number of transistors | 7200 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5-2699 v4 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 | 2 (Multiprocessor) | 1 (Uniprocessor) |
| Socket | FCLGA2011 | FCBGA1310 |
| Power consumption (TDP) | 145 Watt | 32 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2699 v4 and Atom C3955. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | - |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | no data |
| PAE | 46 Bit | no data |
Security technologies
Xeon E5-2699 v4 and Atom C3955 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | + |
| Secure Boot | no data | + |
| Secure Key | + | + |
| SGX | no data | - |
| OS Guard | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2699 v4 and Atom C3955 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2699 v4 and Atom C3955. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400 | DDR4: 2400 |
| Maximum memory size | 1.5 TB | 256 GB |
| Max memory channels | 4 | 2 |
| Maximum memory bandwidth | 76.8 GB/s | 38.397 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2699 v4 and Atom C3955.
| PCIe version | 3.0 | 3 |
| PCI Express lanes | 40 | 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 | 16.28 | 3.79 |
| Recency | 20 June 2016 | 15 August 2017 |
| Physical cores | 22 | 16 |
| Threads | 44 | 16 |
| Power consumption (TDP) | 145 Watt | 32 Watt |
Xeon E5-2699 v4 has a 329.6% higher aggregate performance score, and 37.5% more physical cores and 175% more threads.
Atom C3955, on the other hand, has an age advantage of 1 year, and 353.1% lower power consumption.
The Xeon E5-2699 v4 is our recommended choice as it beats the Atom C3955 in performance tests.
Should you still have questions on choice between Xeon E5-2699 v4 and Atom C3955, ask them in Comments section, and we shall answer.
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