Celeron M 390 vs Pentium D 820
Aggregate performance score
Pentium D 820 outperforms Celeron M 390 by an impressive 65% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3343 | 3501 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | Pentium D | Celeron M |
| Power efficiency | 0.12 | 0.34 |
| Designer | Intel | Intel |
| Architecture codename | Smithfield (2005) | Dothan (2004−2005) |
| Release date | May 2005 (20 years ago) | no data |
Detailed specifications
Pentium D 820 and Celeron M 390 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) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Base clock speed | 2.8 GHz | 1.7 GHz |
| Boost clock speed | 2.8 GHz | 1.7 GHz |
| Bus rate | 800 MHz | 400 MHz |
| L1 cache | 28 KB | no data |
| L2 cache | 2 MB | no data |
| L3 cache | 0 KB | 1 MB L2 KB |
| Chip lithography | 90 nm | 90 nm |
| Die size | 206 mm2 | no data |
| Maximum core temperature | 64 °C | 100 °C |
| Number of transistors | 169 million | no data |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 1.2V-1.4V | 1.004V-1.292V |
Compatibility
Information on Pentium D 820 and Celeron M 390 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 | no data |
| Socket | PLGA775 | PPGA478, H-PBGA479 |
| Power consumption (TDP) | 95 Watt | 21 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 820 and Celeron M 390. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | - | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | - |
| Demand Based Switching | - | - |
| PAE | 32 Bit | 32 Bit |
| FSB parity | - | - |
Security technologies
Pentium D 820 and Celeron M 390 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 820 and Celeron M 390 are enumerated here.
| VT-d | - | no data |
| VT-x | - | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Celeron M 390. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
Pros & cons summary
| Performance score | 0.28 | 0.17 |
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Power consumption (TDP) | 95 Watt | 21 Watt |
Pentium D 820 has a 64.7% higher aggregate performance score, and 100% more physical cores and 100% more threads.
Celeron M 390, on the other hand, has 352.4% lower power consumption.
The Intel Pentium D 820 is our recommended choice as it beats the Intel Celeron M 390 in performance tests.
Note that Pentium D 820 is a desktop processor while Celeron M 390 is a notebook one.
Other comparisons
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