Xeon Phi 31S1P: specs and benchmarks
Summary
Intel started Xeon Phi 31S1P sales 17 June 2013. This is a Knights Corner architecture desktop processor primarily aimed at professional systems. It has 57 cores and 228 threads, and is based on 22 nm manufacturing technology, with a maximum frequency of 1100 MHz and a locked multiplier.
Compatibility-wise, this is PCIe x16 processor with a TDP of 270 Watt. It supports DDR3, DDR4 memory.
Primary details
Xeon Phi 31S1P processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Market segment | Server | |
| Architecture codename | Knights Corner (2012−2014) | |
| Release date | 17 June 2013 (11 years ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 57 (Heptapentaconta-Core) | |
| Threads | 228 | |
| Boost clock speed | 1.1 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 32 KB (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 512 KB (per core) | of 2 MB (Xeon 6980P) |
| L3 cache | 0 KB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 22 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 350 mm2 | |
| Number of transistors | 5,000 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - |
Compatibility
Information on Xeon Phi 31S1P compatibility with other computer components and devices: 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 | of 8 (Opteron 842) |
| Socket | PCIe x16 | |
| Power consumption (TDP) | 270 Watt | of 500 Watt (Xeon 6960P) |
Technologies and extensions
Technological capabilities and additional instructions supported by Xeon Phi 31S1P. You'll probably need this information if you require some particular technology.
| AES-NI | + | |
| AVX | + | |
| vPro | + | |
| Enhanced SpeedStep (EIST) | + |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-d | + | |
| VT-x | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Xeon Phi 31S1P's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR3, DDR4 |
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Xeon Phi 31S1P, according to our PC configuration statistics.
These are the fastest graphics cards for Xeon Phi 31S1P in our user configuration statistics. There is a total of 2 configurations using Xeon Phi 31S1P in our database.
