Xeon 6774P vs 6556P-B
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 | Granite Rapids (2024−2025) | no data |
| Release date | 24 February 2025 (less than a year ago) | 1 April 2025 (less than a year ago) |
| Launch price (MSRP) | $2,628 | no data |
Detailed specifications
Xeon 6556P-B and Xeon 6774P 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 | 36 | 64 (Tetrahexaconta-Core) |
| Performance-cores | 36 | no data |
| Threads | 72 | 128 |
| Base clock speed | 2.3 GHz | 2.5 GHz |
| Boost clock speed | 3.5 GHz | 3.9 GHz |
| L1 cache | 112 KB (per core) | no data |
| L2 cache | 2 MB (per core) | no data |
| L3 cache | 144 MB (shared) | 336 MB |
| Chip lithography | Intel 3 nm | no data |
| Die size | 598 mm2 | no data |
| Maximum core temperature | no data | 81 °C |
| Maximum case temperature (TCase) | 85 °C | no data |
| 64 bit support | + | - |
Compatibility
Information on Xeon 6556P-B and Xeon 6774P 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 | FCBGA4368 | FCLGA4710 |
| Power consumption (TDP) | 215 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 6556P-B and Xeon 6774P. 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 | + | - |
| Enhanced SpeedStep (EIST) | - | no data |
| QuickAssist | + | no data |
| Speed Shift | - | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | + |
| Deep Learning Boost | + | + |
Security technologies
Xeon 6556P-B and Xeon 6774P 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 6556P-B and Xeon 6774P are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 6556P-B and Xeon 6774P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5(6400MT/s)MRDIMM(8000MT/s) |
| Maximum memory size | 1.13 TB | 4 TB |
| Max memory channels | 4 | 8 |
| 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 6556P-B and Xeon 6774P.
| PCIe version | Gen 4, Gen 5 | 5.0 |
| PCI Express lanes | 48 | 136 |
| Integrated LAN | + | no data |
Pros & cons summary
| Recency | 24 February 2025 | 1 April 2025 |
| Physical cores | 36 | 64 |
| Threads | 72 | 128 |
| Power consumption (TDP) | 215 Watt | 350 Watt |
Xeon 6556P-B has 62.8% lower power consumption.
Xeon 6774P, on the other hand, has an age advantage of 1 month, and 77.8% more physical cores and 77.8% more threads.
We couldn't decide between Intel Xeon 6556P-B and Intel Xeon 6774P. We've got no test results to judge.
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