Ultra 9 285 vs Athlon X4 840
Primary details
Comparing Athlon X4 840 and Core Ultra 9 285 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1887 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Series | 4x Athlon | no data |
| Power efficiency | 3.03 | no data |
| Architecture codename | Kaveri (2014−2015) | Arrow Lake-S (2024−2025) |
| Release date | August 2014 (10 years ago) | January 2025 |
Detailed specifications
Athlon X4 840 and Core Ultra 9 285 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 | 4 (Quad-Core) | 24 (Tetracosa-Core) |
| Threads | 4 | 24 |
| Base clock speed | 3.1 GHz | 2.5 GHz |
| Boost clock speed | 3.8 GHz | 5.6 GHz |
| L1 cache | 256K | 112 KB (per core) |
| L2 cache | 4 MB | 3 MB (per core) |
| L3 cache | no data | 36 MB (shared) |
| Chip lithography | 28 nm | 3 nm |
| Die size | 245 mm2 | 243 mm2 |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Athlon X4 840 and Core Ultra 9 285 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 | Socket FM2+ | 1851 |
| Power consumption (TDP) | 65 watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon X4 840 and Core Ultra 9 285. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Athlon X4 840 and Core Ultra 9 285 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon X4 840 and Core Ultra 9 285 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 Athlon X4 840 and Core Ultra 9 285. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Arc Xe2 Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Athlon X4 840 and Core Ultra 9 285.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 16 | 20 |
Pros & cons summary
| Physical cores | 4 | 24 |
| Threads | 4 | 24 |
| Chip lithography | 28 nm | 3 nm |
| Power consumption (TDP) | 65 Watt | 125 Watt |
Athlon X4 840 has 92.3% lower power consumption.
Ultra 9 285, on the other hand, has 500% more physical cores and 500% more threads, and a 833.3% more advanced lithography process.
We couldn't decide between Athlon X4 840 and Core Ultra 9 285. We've got no test results to judge.
Should you still have questions on choice between Athlon X4 840 and Core Ultra 9 285, ask them in Comments section, and we shall answer.
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