Xeon 6548P-B vs Platinum 8558
Contents
Primary details
Comparing 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 |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Emerald Rapids (2023) | no data |
| Release date | 14 December 2023 (2 years ago) | 1 October 2025 (less than a year ago) |
| Launch price (MSRP) | $4,650 | no data |
Detailed specifications
Xeon Platinum 8558 and Xeon 6548P-B 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 | 48 (Octatetraconta-Core) | 32 (Dotriaconta-Core) |
| Performance-cores | no data | 32 |
| Threads | 96 | 64 |
| Base clock speed | 2.1 GHz | 2 GHz |
| Boost clock speed | 4 GHz | 3.5 GHz |
| Bus rate | no data | 0 GT/s |
| L1 cache | 80 KB (per core) | no data |
| L2 cache | 2 MB (per core) | no data |
| L3 cache | 260 MB (shared) | 128 MB |
| Chip lithography | Intel 7 nm | Intel 3 nm |
| Die size | 2x 763 mm2 | no data |
| Maximum core temperature | no data | 85 °C |
| Maximum case temperature (TCase) | 78 °C | no data |
| 64 bit support | + | + |
Compatibility
Information on Xeon Platinum 8558 and Xeon 6548P-B 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 | no data |
| Socket | FCLGA4677 | no data |
| Power consumption (TDP) | 330 Watt | 195 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Platinum 8558 and Xeon 6548P-B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, 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 |
| QuickAssist | no data | + |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Deep Learning Boost | + | + |
Security technologies
Xeon Platinum 8558 and Xeon 6548P-B technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| SGX | Yes with Intel® SPS | Yes with Intel® SPS |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Platinum 8558 and Xeon 6548P-B are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8558 and Xeon 6548P-B. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 @ 5200 MT/s (1 DPC) | DDR5 |
| Maximum memory size | 4 TB | 1.13 TB |
| Max memory channels | 8 | 4 |
| ECC memory support | + | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon Platinum 8558 and Xeon 6548P-B.
| PCIe version | 5.0 | Gen 4, Gen 5 |
| PCI Express lanes | 80 | 48 |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 14 December 2023 | 1 October 2025 |
| Physical cores | 48 | 32 |
| Threads | 96 | 64 |
| Power consumption (TDP) | 330 Watt | 195 Watt |
Xeon Platinum 8558 has 50% more physical cores and 50% more threads.
Xeon 6548P-B, on the other hand, has an age advantage of 1 year, and 69.2% lower power consumption.
We couldn't decide between Intel Xeon Platinum 8558 and Intel Xeon 6548P-B. We've got no test results to judge.
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