Ultra 9 285T vs Pentium D 820
Primary details
Comparing Pentium D 820 and Core Ultra 9 285T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3132 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Series | Pentium D | no data |
| Power efficiency | 0.31 | no data |
| Architecture codename | Smithfield (2005) | Arrow Lake-S (2024−2025) |
| Release date | May 2005 (19 years ago) | 7 January 2025 (less than a year ago) |
| Launch price (MSRP) | no data | $549 |
Detailed specifications
Pentium D 820 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 | 2 (Dual-core) | 24 (Tetracosa-Core) |
| Performance-cores | no data | 8 |
| Efficient-cores | no data | 16 |
| Threads | 2 | 24 |
| Base clock speed | 2.8 GHz | 1.4 GHz |
| Boost clock speed | 2.8 GHz | 5.4 GHz |
| Bus rate | 800 MHz | no data |
| L1 cache | 28 KB | 192 KB (per core) |
| L2 cache | 2 MB | 3 MB (per core) |
| L3 cache | 0 KB | 36 MB (shared) |
| Chip lithography | 90 nm | 3 nm |
| Die size | 206 mm2 | 243 mm2 |
| Maximum core temperature | 64 °C | no data |
| Number of transistors | 169 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| VID voltage range | 1.2V-1.4V | no data |
Compatibility
Information on Pentium D 820 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 | 2 | 1 |
| Socket | PLGA775 | FCLGA1851 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 820 and Core Ultra 9 285T. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | - | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | no data |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| Demand Based Switching | - | no data |
| PAE | 32 Bit | no data |
| Turbo Boost Max 3.0 | no data | + |
| FSB parity | - | no data |
| Deep Learning Boost | - | + |
| Supported AI Software Frameworks | - | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN |
Security technologies
Pentium D 820 and Core Ultra 9 285T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 820 and Core Ultra 9 285T are enumerated here.
| VT-d | - | + |
| VT-x | - | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Core Ultra 9 285T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, 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 Pentium D 820 and Core Ultra 9 285T integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Pentium D 820 and Core Ultra 9 285T 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 Pentium D 820 and Core Ultra 9 285T integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Pentium D 820 and Core Ultra 9 285T.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Physical cores | 2 | 24 |
| Threads | 2 | 24 |
| Chip lithography | 90 nm | 3 nm |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Ultra 9 285T has 1100% more physical cores and 1100% more threads, a 2900% more advanced lithography process, and 171.4% lower power consumption.
We couldn't decide between Pentium D 820 and Core Ultra 9 285T. We've got no test results to judge.
Should you still have questions on choice between Pentium D 820 and Core Ultra 9 285T, ask them in Comments section, and we shall answer.
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