Xeon 6516P-B vs Ultra 7 255U
Primary details
Comparing Core Ultra 7 255U and Xeon 6516P-B processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 661 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Power efficiency | 20.62 | no data |
| Designer | Intel | Intel |
| Architecture codename | no data | Granite Rapids (2024−2025) |
| Release date | 1 January 2025 (less than a year ago) | 24 February 2025 (recently) |
| Launch price (MSRP) | no data | $1,544 |
Detailed specifications
Core Ultra 7 255U and Xeon 6516P-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 | 12 (Dodeca-Core) | 20 (Icosa-Core) |
| Performance-cores | 2 | no data |
| Efficient-cores | 8 | no data |
| Low Power Efficient-cores | 2 | no data |
| Threads | 14 | 40 |
| Base clock speed | no data | 2.3 GHz |
| Boost clock speed | 5.2 GHz | 3.5 GHz |
| L1 cache | no data | 112 KB (per core) |
| L2 cache | no data | 2 MB (per core) |
| L3 cache | 12 MB | 80 MB (shared) |
| Chip lithography | Intel 3 nm | 5 nm |
| Die size | no data | 598 mm2 |
| Maximum case temperature (TCase) | no data | 85 °C |
| 64 bit support | + | + |
Compatibility
Information on Core Ultra 7 255U and Xeon 6516P-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 | 1 | 2 |
| Socket | FCBGA2049 | Intel BGA 4368 |
| Power consumption (TDP) | 57 Watt | 145 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 255U and Xeon 6516P-B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | - | + |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | no data |
| TSX | - | + |
| Thermal Monitoring | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Deep Learning Boost | + | - |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, ONNX RT | - |
Security technologies
Core Ultra 7 255U and Xeon 6516P-B technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | no data |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 255U and Xeon 6516P-B are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 255U and Xeon 6516P-B. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-6400 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Graphics | N/A |
| Quick Sync Video | + | - |
| Graphics max frequency | 2.1 GHz | no data |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 255U and Xeon 6516P-B integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 255U and Xeon 6516P-B integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL) | no data |
| Max resolution over eDP | 3840x2400 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core Ultra 7 255U and Xeon 6516P-B integrated GPUs, sometimes API versions are included.
| DirectX | 12.2 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 255U and Xeon 6516P-B.
| PCIe version | no data | 5.0 |
| PCI Express lanes | 20 | 32 |
| PCI support | 4.0 | no data |
Pros & cons summary
| Recency | 1 January 2025 | 24 February 2025 |
| Physical cores | 12 | 20 |
| Threads | 14 | 40 |
| Power consumption (TDP) | 57 Watt | 145 Watt |
Ultra 7 255U has 154.4% lower power consumption.
Xeon 6516P-B, on the other hand, has an age advantage of 1 month, and 66.7% more physical cores and 185.7% more threads.
We couldn't decide between Intel Core Ultra 7 255U and Intel Xeon 6516P-B. We've got no test results to judge.
Be aware that Core Ultra 7 255U is a notebook processor while Xeon 6516P-B is a server/workstation one.
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