i7-1255U vs Xeon E7-8855 v4
Primary details
Comparing Xeon E7-8855 v4 and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 895 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Laptop |
| Series | no data | Intel Alder Lake-M |
| Power efficiency | no data | 53.68 |
| Architecture codename | no data | Alder Lake-U (2022) |
| Release date | 1 April 2016 (8 years ago) | 23 February 2022 (2 years ago) |
Detailed specifications
Xeon E7-8855 v4 and Core i7-1255U 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 | 14 (Tetradeca-Core) | 10 (Deca-Core) |
| Threads | 28 | 12 |
| Base clock speed | 2.1 GHz | 1.7 GHz |
| Boost clock speed | 2.8 GHz | 4.7 GHz |
| Bus rate | 8 GT/s | no data |
| L1 cache | no data | 80K (per core) |
| L2 cache | no data | 1.25 MB (per core) |
| L3 cache | 35 MB | 12 MB (shared) |
| Chip lithography | 14 nm | 10 nm |
| Maximum core temperature | 73 °C | 100 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Xeon E7-8855 v4 and Core i7-1255U 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 | 1 |
| Socket | FCLGA2011 | Intel BGA 1744 |
| Power consumption (TDP) | 140 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E7-8855 v4 and Core i7-1255U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | + |
| FMA | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| PAE | 46 Bit | no data |
Security technologies
Xeon E7-8855 v4 and Core i7-1255U 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 Xeon E7-8855 v4 and Core i7-1255U are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E7-8855 v4 and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1333, DDR4-1600, DDR4-1866, DDR3-1066, DDR3-1333, DDR3-1600 | DDR4, DDR5 |
| Maximum memory size | 3 TB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 102 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz) |
Peripherals
Specifications and connection of peripherals supported by Xeon E7-8855 v4 and Core i7-1255U.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 32 | 20 |
Pros & cons summary
| Recency | 1 April 2016 | 23 February 2022 |
| Physical cores | 14 | 10 |
| Threads | 28 | 12 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 140 Watt | 15 Watt |
Xeon E7-8855 v4 has 40% more physical cores and 133.3% more threads.
i7-1255U, on the other hand, has an age advantage of 5 years, a 40% more advanced lithography process, and 833.3% lower power consumption.
We couldn't decide between Xeon E7-8855 v4 and Core i7-1255U. We've got no test results to judge.
Be aware that Xeon E7-8855 v4 is a server/workstation processor while Core i7-1255U is a notebook one.
Should you still have questions on choice between Xeon E7-8855 v4 and Core i7-1255U, ask them in Comments section, and we shall answer.
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