Xeon D-2899NT vs Phi 7255
Primary details
Comparing Xeon Phi 7255 and Xeon D-2899NT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Architecture codename | no data | Ice Lake-D (2022−2023) |
| Release date | 1 October 2017 (7 years ago) | 14 December 2023 (1 year ago) |
| Launch price (MSRP) | no data | $2,138 |
Detailed specifications
Xeon Phi 7255 and Xeon D-2899NT 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 | 68 (Octahexaconta-Core) | 22 (Docosa-Core) |
| Threads | 68 | 44 |
| Base clock speed | 1.1 GHz | 2.2 GHz |
| Boost clock speed | 1.2 GHz | 3.1 GHz |
| L1 cache | no data | 80 KB (per core) |
| L2 cache | no data | 1.25 MB (per core) |
| L3 cache | 34 MB L2 Cache | 30 MB (shared) |
| Chip lithography | 14 nm | 10 nm |
| Maximum core temperature | 82 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| VID voltage range | 0.550-1.2V | no data |
Compatibility
Information on Xeon Phi 7255 and Xeon D-2899NT 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 |
| Socket | no data | FCBGA2579 |
| Power consumption (TDP) | 215 Watt | 135 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Phi 7255 and Xeon D-2899NT. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX-512 | Intel® AVX-512 |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| QuickAssist | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | + | no data |
| Thermal Monitoring | + | + |
| Deep Learning Boost | - | + |
Security technologies
Xeon Phi 7255 and Xeon D-2899NT technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| SGX | - | Yes with Intel® SPS |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Phi 7255 and Xeon D-2899NT are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Phi 7255 and Xeon D-2899NT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2400 | DDR4 |
| Maximum memory size | 384 GB | 1 TB |
| Max memory channels | 6 | 4 |
| Maximum memory bandwidth | 115.2 GB/s | no data |
| ECC memory support | + | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon Phi 7255 and Xeon D-2899NT.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 36 | 32 |
| USB revision | no data | 3.0 |
| Max number of SATA 6 Gb/s Ports | no data | 24 |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 1 October 2017 | 14 December 2023 |
| Physical cores | 68 | 22 |
| Threads | 68 | 44 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 215 Watt | 135 Watt |
Xeon Phi 7255 has 209.1% more physical cores and 54.5% more threads.
Xeon D-2899NT, on the other hand, has an age advantage of 6 years, a 40% more advanced lithography process, and 59.3% lower power consumption.
We couldn't decide between Xeon Phi 7255 and Xeon D-2899NT. We've got no test results to judge.
Should you still have questions on choice between Xeon Phi 7255 and Xeon D-2899NT, ask them in Comments section, and we shall answer.
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