Xeon 6766P-B vs Platinum 8276
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 |
| Series | Intel Xeon Platinum | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Cascade Lake-SP (2018) | no data |
| Release date | 11 December 2018 (6 years ago) | 1 October 2025 (recently) |
| Launch price (MSRP) | $8,719 | no data |
Detailed specifications
Xeon Platinum 8276 and Xeon 6766P-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 | 28 (Octacosa-Core) | 64 (Tetrahexaconta-Core) |
| Performance-cores | no data | 64 |
| Threads | 56 | 128 |
| Base clock speed | 2.2 GHz | 2.3 GHz |
| Boost clock speed | 4 GHz | 3.5 GHz |
| Bus rate | no data | 0 GT/s |
| Multiplier | 22 | no data |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 1 MB (per core) | no data |
| L3 cache | 38.5 MB (shared) | 256 MB |
| Chip lithography | 14 nm | Intel 3 nm |
| Maximum core temperature | 89 °C | 85 °C |
| Number of transistors | 8,000 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Xeon Platinum 8276 and Xeon 6766P-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 | 8 (Multiprocessor) | no data |
| Socket | FCLGA3647 | no data |
| Power consumption (TDP) | 165 Watt | 305 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Platinum 8276 and Xeon 6766P-B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | - |
| QuickAssist | no data | + |
| Speed Shift | + | - |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Deep Learning Boost | + | + |
Security technologies
Xeon Platinum 8276 and Xeon 6766P-B technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| SGX | no data | Yes with Intel® SPS |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Platinum 8276 and Xeon 6766P-B are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8276 and Xeon 6766P-B. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2933 | DDR5 |
| Maximum memory size | 1 TB | 2.25 TB |
| Max memory channels | 6 | 8 |
| Maximum memory bandwidth | 140.8 GB/s | no data |
| 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 8276 and Xeon 6766P-B.
| PCIe version | 3.0 | Gen4, Gen5 |
| PCI Express lanes | 48 | 48 |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 11 December 2018 | 1 October 2025 |
| Physical cores | 28 | 64 |
| Threads | 56 | 128 |
| Power consumption (TDP) | 165 Watt | 305 Watt |
Xeon Platinum 8276 has 84.8% lower power consumption.
Xeon 6766P-B, on the other hand, has an age advantage of 6 years, and 128.6% more physical cores and 128.6% more threads.
We couldn't decide between Intel Xeon Platinum 8276 and Intel Xeon 6766P-B. We've got no test results to judge.
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