EPYC 9255 vs Ultra 9 285
Primary details
Comparing Core Ultra 9 285 and EPYC 9255 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 | Desktop processor | Server |
| Architecture codename | Arrow Lake-S (2024−2025) | Turin (2024) |
| Release date | January 2025 | 10 October 2024 (recently) |
| Launch price (MSRP) | no data | $2,495 |
Detailed specifications
Core Ultra 9 285 and EPYC 9255 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 | 24 (Tetracosa-Core) | 24 (Tetracosa-Core) |
| Threads | 24 | 48 |
| Base clock speed | 2.5 GHz | 3.25 GHz |
| Boost clock speed | 5.6 GHz | 4.8 GHz |
| L1 cache | 112 KB (per core) | 80 KB (per core) |
| L2 cache | 3 MB (per core) | 1 MB (per core) |
| L3 cache | 36 MB (shared) | 128 MB (shared) |
| Chip lithography | 3 nm | 4 nm |
| Die size | 243 mm2 | 4x 70.6 mm2 |
| Number of transistors | 17,800 million | 33,260 million |
| 64 bit support | + | + |
Compatibility
Information on Core Ultra 9 285 and EPYC 9255 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 | 1851 | SP5 |
| Power consumption (TDP) | 125 Watt | 200 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 9 285 and EPYC 9255. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| TSX | + | - |
| Precision Boost 2 | no data | + |
Security technologies
Core Ultra 9 285 and EPYC 9255 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 9 285 and EPYC 9255 are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285 and EPYC 9255. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 Depends on motherboard | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Arc Xe2 Graphics 64EU | N/A |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 9 285 and EPYC 9255.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 20 | 128 |
Pros & cons summary
| Threads | 24 | 48 |
| Chip lithography | 3 nm | 4 nm |
| Power consumption (TDP) | 125 Watt | 200 Watt |
Ultra 9 285 has a 33.3% more advanced lithography process, and 60% lower power consumption.
EPYC 9255, on the other hand, has 100% more threads.
We couldn't decide between Core Ultra 9 285 and EPYC 9255. We've got no test results to judge.
Note that Core Ultra 9 285 is a desktop processor while EPYC 9255 is a server/workstation one.
Should you still have questions on choice between Core Ultra 9 285 and EPYC 9255, ask them in Comments section, and we shall answer.
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