Pentium M 745 vs Pentium D 840
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 3514 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Pentium M |
| Power efficiency | no data | 0.34 |
| Designer | Intel | Intel |
| Manufacturer | no data | Intel |
| Architecture codename | Smithfield (2005) | Dothan (2004−2005) |
| Release date | May 2005 (20 years ago) | 10 May 2004 (21 years ago) |
Detailed specifications
Pentium D 840 and Pentium M 745 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 | 3.2 GHz | 1.8 GHz |
| Boost clock speed | 3.2 GHz | 1.8 GHz |
| Bus rate | no data | 400 MHz |
| L1 cache | 28 KB | 32 KB |
| L2 cache | 2 MB | 2 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 90 nm |
| Die size | 206 mm2 | 87 mm2 |
| Maximum core temperature | 70 °C | 100 °C |
| Number of transistors | 169 million | 144 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 1.2V-1.4V | 1.276V-1.34V |
Compatibility
Information on Pentium D 840 and Pentium M 745 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 | H-PBGA479,PPGA478 |
| Power consumption (TDP) | 130 Watt | 7.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 840 and Pentium M 745. 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 | no data |
| FSB parity | - | - |
Security technologies
Pentium D 840 and Pentium M 745 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 840 and Pentium M 745 are enumerated here.
| VT-d | - | no data |
| VT-x | - | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 840 and Pentium M 745. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Power consumption (TDP) | 130 Watt | 7 Watt |
Pentium D 840 has 100% more physical cores and 100% more threads.
Pentium M 745, on the other hand, has 1757.1% lower power consumption.
We couldn't decide between Intel Pentium D 840 and Intel Pentium M 745. We've got no test results to judge.
Note that Pentium D 840 is a desktop processor while Pentium M 745 is a notebook one.
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