Ultra 9 285K vs Phenom II X3 P820
Aggregate performance score
Core Ultra 9 285K outperforms Phenom II X3 P820 by a whopping 6421% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X3 P820 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2754 | 54 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 74.27 |
| Market segment | Laptop | Desktop processor |
| Series | 3x AMD Phenom II | no data |
| Power efficiency | 2.50 | 32.56 |
| Architecture codename | Champlain (2010−2011) | Arrow Lake-S (2024−2025) |
| Release date | 12 May 2010 (14 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
Phenom II X3 P820 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 | 3 (Tri-Core) | 24 (Tetracosa-Core) |
| Performance-cores | no data | 8 |
| Efficient-cores | no data | 16 |
| Threads | 3 | 24 |
| Base clock speed | no data | 3.7 GHz |
| Boost clock speed | 1.8 GHz | 5.6 GHz |
| Bus rate | 3600 MHz | 250 MHz |
| L1 cache | 384 KB | 112 KB (per core) |
| L2 cache | 1.5 MB | 3 MB (per core) |
| L3 cache | no data | 36 MB (shared) |
| Chip lithography | 45 nm | 3 nm |
| Die size | no data | 243 mm2 |
| Number of transistors | no data | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X3 P820 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 | no data | 1 |
| Socket | S1 | FCLGA1851 |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X3 P820 and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| AVX | - | + |
| VirusProtect | + | - |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
| Supported AI Software Frameworks | - | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN |
Security technologies
Phenom II X3 P820 and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X3 P820 and Core Ultra 9 285K are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5-6400 |
| Maximum memory size | no data | 192 GB |
| Max memory channels | no data | 2 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® Graphics |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 2 GHz |
Graphics interfaces
Available interfaces and connections of Phenom II X3 P820 and Core Ultra 9 285K integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Phenom II X3 P820 and Core Ultra 9 285K integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4K @ 60Hz (HDMI 2.1 TMDS) 8K @ 60Hz (HDMI2.1 FRL) |
| Max resolution over eDP | no data | 4K @ 60Hz |
| Max resolution over DisplayPort | no data | 8K @ 60Hz |
Graphics API support
APIs supported by Phenom II X3 P820 and Core Ultra 9 285K integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Phenom II X3 P820 and Core Ultra 9 285K.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Performance score | 0.66 | 43.04 |
| Recency | 12 May 2010 | 24 October 2024 |
| Physical cores | 3 | 24 |
| Threads | 3 | 24 |
| Chip lithography | 45 nm | 3 nm |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Phenom II X3 P820 has 400% lower power consumption.
Ultra 9 285K, on the other hand, has a 6421.2% higher aggregate performance score, an age advantage of 14 years, 700% more physical cores and 700% more threads, and a 1400% more advanced lithography process.
The Core Ultra 9 285K is our recommended choice as it beats the Phenom II X3 P820 in performance tests.
Be aware that Phenom II X3 P820 is a notebook processor while Core Ultra 9 285K is a desktop one.
Should you still have questions on choice between Phenom II X3 P820 and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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