Xeon Platinum 8558U vs Phi 7255
Primary details
Comparing Xeon Phi 7255 and Xeon Platinum 8558U 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 | Emerald Rapids (2023) |
| Release date | 1 October 2017 (7 years ago) | 14 December 2023 (less than a year ago) |
| Launch price (MSRP) | no data | $3,720 |
Detailed specifications
Xeon Phi 7255 and Xeon Platinum 8558U 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) | 48 (Octatetraconta-Core) |
| Threads | 68 | 96 |
| Base clock speed | 1.1 GHz | 2 GHz |
| Boost clock speed | 1.2 GHz | 4 GHz |
| L1 cache | no data | 80 KB (per core) |
| L2 cache | no data | 2 MB (per core) |
| L3 cache | 34 MB L2 Cache | 260 MB (shared) |
| Chip lithography | 14 nm | Intel 7 nm |
| Die size | no data | 2x 763 mm2 |
| Maximum core temperature | 82 °C | no data |
| Maximum case temperature (TCase) | no data | 78 °C |
| 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 Platinum 8558U 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 | FCLGA4677 |
| Power consumption (TDP) | 215 Watt | 300 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Phi 7255 and Xeon Platinum 8558U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX-512 | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Deep Learning Boost | - | + |
Security technologies
Xeon Phi 7255 and Xeon Platinum 8558U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| SGX | - | Yes with Intel® SPS |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Phi 7255 and Xeon Platinum 8558U are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Phi 7255 and Xeon Platinum 8558U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2400 | DDR5 @ 4800 MT/s (1 DPC) |
| Maximum memory size | 384 GB | 4 TB |
| Max memory channels | 6 | 8 |
| 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 Platinum 8558U.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 36 | 80 |
Pros & cons summary
| Recency | 1 October 2017 | 14 December 2023 |
| Physical cores | 68 | 48 |
| Threads | 68 | 96 |
| Power consumption (TDP) | 215 Watt | 300 Watt |
Xeon Phi 7255 has 41.7% more physical cores, and 39.5% lower power consumption.
Xeon Platinum 8558U, on the other hand, has an age advantage of 6 years, and 41.2% more threads.
We couldn't decide between Xeon Phi 7255 and Xeon Platinum 8558U. We've got no test results to judge.
Should you still have questions on choice between Xeon Phi 7255 and Xeon Platinum 8558U, ask them in Comments section, and we shall answer.
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