Ultra 9 285K vs Athlon II X4 651K
Primary details
Comparing Athlon II X4 651K and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 50 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 70.90 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 32.79 |
| Architecture codename | Llano (2011−2012) | Arrow Lake-S (2024−2025) |
| Release date | 14 November 2011 (13 years ago) | 24 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X4 651K and Core Ultra 9 285K 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 GHz | 3.7 GHz |
| Boost clock speed | 3 GHz | 5.7 GHz |
| Bus rate | no data | 250 MHz |
| L1 cache | 128 KB (per core) | 112 KB (per core) |
| L2 cache | 1 MB (per core) | 3 MB (per core) |
| L3 cache | 0 KB | 36 MB (shared) |
| Chip lithography | 32 nm | 3 nm |
| Die size | 228 mm2 | 243 mm2 |
| Number of transistors | 1,178 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon II X4 651K and Core Ultra 9 285K 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 | FM1 | 1851 |
| Power consumption (TDP) | 100 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 651K and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Athlon II X4 651K and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon II X4 651K and Core Ultra 9 285K 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 II X4 651K and Core Ultra 9 285K. 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 Xe-LPG Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 651K and Core Ultra 9 285K.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 14 November 2011 | 24 October 2024 |
| Physical cores | 4 | 24 |
| Threads | 4 | 24 |
| Chip lithography | 32 nm | 3 nm |
| Power consumption (TDP) | 100 Watt | 125 Watt |
Athlon II X4 651K has 25% lower power consumption.
Ultra 9 285K, on the other hand, has an age advantage of 12 years, 500% more physical cores and 500% more threads, and a 966.7% more advanced lithography process.
We couldn't decide between Athlon II X4 651K and Core Ultra 9 285K. We've got no test results to judge.
Should you still have questions on choice between Athlon II X4 651K and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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