Pentium D 940 vs Celeron E1400
Aggregate performance score
Celeron E1400 outperforms Pentium D 940 by a substantial 35% based on our aggregate benchmark results.
Primary details
Comparing Celeron E1400 and Pentium D 940 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2937 | 3067 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 0.67 | 0.25 |
| Architecture codename | Allendale (2006−2009) | Presler (2005−2007) |
| Release date | April 2008 (16 years ago) | 5 January 2006 (19 years ago) |
| Launch price (MSRP) | $57 | $423 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Celeron E1400 and Pentium D 940 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 2 GHz | 3.2 GHz |
| Boost clock speed | 2 GHz | 3.2 GHz |
| L1 cache | 64 KB (per core) | 16 KB (per core) |
| L2 cache | 512 KB (shared) | 2 MB (per die) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 65 nm | 65 nm |
| Die size | 77 mm2 | 2x 81 mm2 |
| Maximum core temperature | 73 °C | no data |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 105 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.5V | 1.2V-1.3375V |
Compatibility
Information on Celeron E1400 and Pentium D 940 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 | LGA775 | LGA775,PLGA775 |
| Power consumption (TDP) | 65 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron E1400 and Pentium D 940. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | - |
| PAE | no data | 32 Bit |
| FSB parity | - | - |
Security technologies
Celeron E1400 and Pentium D 940 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron E1400 and Pentium D 940 are enumerated here.
| VT-d | - | - |
| VT-x | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron E1400 and Pentium D 940. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 0.46 | 0.34 |
| Power consumption (TDP) | 65 Watt | 130 Watt |
Celeron E1400 has a 35.3% higher aggregate performance score, and 100% lower power consumption.
The Celeron E1400 is our recommended choice as it beats the Pentium D 940 in performance tests.
Should you still have questions on choice between Celeron E1400 and Pentium D 940, ask them in Comments section, and we shall answer.
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