EPYC 9645 vs Xeon W-11855M
Primary details
Comparing Xeon W-11855M and EPYC 9645 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 693 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | Intel Tiger Lake | no data |
| Power efficiency | 30.82 | no data |
| Architecture codename | Tiger Lake-H (2021) | Turin (2024) |
| Release date | 11 May 2021 (3 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $11,048 |
Detailed specifications
Xeon W-11855M and EPYC 9645 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 | 6 (Hexa-Core) | 96 |
| Threads | 12 | 192 |
| Base clock speed | 3.2 GHz | 2.3 GHz |
| Boost clock speed | 4.9 GHz | 3.7 GHz |
| Bus rate | 8 GT/s | no data |
| L1 cache | 96K (per core) | 80 KB (per core) |
| L2 cache | 1.25 MB (per core) | 1 MB (per core) |
| L3 cache | 18 MB (shared) | 256 MB (shared) |
| Chip lithography | 10 nm SuperFin | 3 nm |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Xeon W-11855M and EPYC 9645 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 | FCBGA1787 | SP5 |
| Power consumption (TDP) | 35 Watt | 320 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon W-11855M and EPYC 9645. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| SIPP | + | - |
| Turbo Boost Max 3.0 | + | no data |
| Precision Boost 2 | no data | + |
| Deep Learning Boost | + | - |
Security technologies
Xeon W-11855M and EPYC 9645 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| Secure Key | + | no data |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon W-11855M and EPYC 9645 are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon W-11855M and EPYC 9645. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 51.2 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics for 11th Gen Intel Processors | N/A |
| Quick Sync Video | + | - |
| Graphics max frequency | 1.45 GHz | no data |
| Execution Units | 32 | no data |
Graphics interfaces
Available interfaces and connections of Xeon W-11855M and EPYC 9645 integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Xeon W-11855M and EPYC 9645 integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096x2304@60Hz | no data |
| Max resolution over eDP | 4096x2304@60Hz | no data |
| Max resolution over DisplayPort | 7680x4320@60Hz | no data |
Graphics API support
APIs supported by Xeon W-11855M and EPYC 9645 integrated GPUs, sometimes API versions are included.
| DirectX | 12.1 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon W-11855M and EPYC 9645.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 20 | 128 |
Pros & cons summary
| Recency | 11 May 2021 | 10 October 2024 |
| Physical cores | 6 | 96 |
| Threads | 12 | 192 |
| Chip lithography | 10 nm | 3 nm |
| Power consumption (TDP) | 35 Watt | 320 Watt |
Xeon W-11855M has 814.3% lower power consumption.
EPYC 9645, on the other hand, has an age advantage of 3 years, 1500% more physical cores and 1500% more threads, and a 233.3% more advanced lithography process.
We couldn't decide between Xeon W-11855M and EPYC 9645. We've got no test results to judge.
Should you still have questions on choice between Xeon W-11855M and EPYC 9645, ask them in Comments section, and we shall answer.
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