EPYC 9355P vs Ultra 9 285K
Primary details
Comparing Core Ultra 9 285K and EPYC 9355P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 53 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 74.38 | no data |
| Market segment | Desktop processor | Server |
| Power efficiency | 32.65 | no data |
| Architecture codename | Arrow Lake-S (2024−2025) | Turin (2024) |
| Release date | 24 October 2024 (less than a year ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $589 | $2,998 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core Ultra 9 285K and EPYC 9355P 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) | 32 (Dotriaconta-Core) |
| Threads | 24 | 64 |
| Base clock speed | 3.7 GHz | 3.55 GHz |
| Boost clock speed | 5.7 GHz | 4.4 GHz |
| Bus rate | 250 MHz | no data |
| 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) | 256 MB (shared) |
| Chip lithography | 3 nm | 4 nm |
| Die size | 243 mm2 | 8x 70.6 mm2 |
| Number of transistors | 17,800 million | 66,520 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core Ultra 9 285K and EPYC 9355P 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 | 1 |
| Socket | 1851 | SP5 |
| Power consumption (TDP) | 125 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 9 285K and EPYC 9355P. 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 285K and EPYC 9355P 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 285K and EPYC 9355P 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 285K and EPYC 9355P. 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 Xe-LPG Graphics 64EU | N/A |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 9 285K and EPYC 9355P.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 20 | 128 |
Pros & cons summary
| Physical cores | 24 | 32 |
| Threads | 24 | 64 |
| Chip lithography | 3 nm | 4 nm |
| Power consumption (TDP) | 125 Watt | 280 Watt |
Ultra 9 285K has a 33.3% more advanced lithography process, and 124% lower power consumption.
EPYC 9355P, on the other hand, has 33.3% more physical cores and 166.7% more threads.
We couldn't decide between Core Ultra 9 285K and EPYC 9355P. We've got no test results to judge.
Note that Core Ultra 9 285K is a desktop processor while EPYC 9355P is a server/workstation one.
Should you still have questions on choice between Core Ultra 9 285K and EPYC 9355P, ask them in Comments section, and we shall answer.
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