Ultra 9 285T vs Ryzen 5 8400F
Primary details
Comparing Ryzen 5 8400F and Core Ultra 9 285T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 457 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 64.44 | no data |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 22.26 | no data |
| Architecture codename | Phoenix (2023−2024) | Arrow Lake-S (2024−2025) |
| Release date | 1 April 2024 (less than a year ago) | January 2025 |
| Launch price (MSRP) | $170 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 5 8400F and Core Ultra 9 285T 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) | 24 (Tetracosa-Core) |
| Threads | 12 | 24 |
| Base clock speed | 4.2 GHz | 1.4 GHz |
| Boost clock speed | 4.7 GHz | 5.4 GHz |
| L1 cache | 64 KB (per core) | 112 KB (per core) |
| L2 cache | 1 MB (per core) | 3 MB (per core) |
| L3 cache | 16 MB (shared) | 36 MB (shared) |
| Chip lithography | 4 nm | 3 nm |
| Die size | 178 mm2 | 243 mm2 |
| Number of transistors | 25,000 million | 17,800 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 5 8400F and Core Ultra 9 285T 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 | AM5 | 1851 |
| Power consumption (TDP) | 65 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 8400F and Core Ultra 9 285T. 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
Ryzen 5 8400F and Core Ultra 9 285T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 8400F and Core Ultra 9 285T 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 Ryzen 5 8400F and Core Ultra 9 285T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Arc Xe2 Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 8400F and Core Ultra 9 285T.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 20 | 20 |
Pros & cons summary
| Physical cores | 6 | 24 |
| Threads | 12 | 24 |
| Chip lithography | 4 nm | 3 nm |
| Power consumption (TDP) | 65 Watt | 35 Watt |
Ultra 9 285T has 300% more physical cores and 100% more threads, a 33.3% more advanced lithography process, and 85.7% lower power consumption.
We couldn't decide between Ryzen 5 8400F and Core Ultra 9 285T. We've got no test results to judge.
Should you still have questions on choice between Ryzen 5 8400F and Core Ultra 9 285T, ask them in Comments section, and we shall answer.
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