Core 2 Duo E6400 vs Pentium B940
Primary details
Comparing Pentium B940 and Core 2 Duo E6400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2835 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Pentium | no data |
| Power efficiency | 1.46 | no data |
| Architecture codename | Sandy Bridge (2011−2013) | Conroe (2006−2007) |
| Release date | 19 June 2011 (13 years ago) | July 2006 (18 years ago) |
| Launch price (MSRP) | $134 | no data |
Detailed specifications
Pentium B940 and Core 2 Duo E6400 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 | 2.13 GHz |
| Boost clock speed | 2 GHz | 2.13 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | 1066 MHz |
| Multiplier | 20 | no data |
| L1 cache | 64K (per core) | 64 KB |
| L2 cache | 256K (per core) | 2 MB |
| L3 cache | 2 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 65 nm |
| Die size | 131 mm2 | 143 mm2 |
| Maximum core temperature | 85 °C | 61 °C |
| Number of transistors | 504 million | 291 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 0.85V-1.5V |
Compatibility
Information on Pentium B940 and Core 2 Duo E6400 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 (Uniprocessor) | 1 |
| Socket | PGA988 | LGA775,PLGA775 |
| Power consumption (TDP) | 35 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium B940 and Core 2 Duo E6400. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| FMA | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | - | no data |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | - |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| FSB parity | no data | - |
Security technologies
Pentium B940 and Core 2 Duo E6400 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium B940 and Core 2 Duo E6400 are enumerated here.
| VT-d | - | no data |
| VT-x | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium B940 and Core 2 Duo E6400. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
| Maximum memory size | 16 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21.335 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for 2nd Generation Intel® Processors | no data |
| Graphics max frequency | 1.1 GHz | no data |
Graphics interfaces
Available interfaces and connections of Pentium B940 and Core 2 Duo E6400 integrated GPUs.
| Number of displays supported | 2 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Pentium B940 and Core 2 Duo E6400.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Chip lithography | 32 nm | 65 nm |
| Power consumption (TDP) | 35 Watt | 65 Watt |
Pentium B940 has a 103.1% more advanced lithography process, and 85.7% lower power consumption.
We couldn't decide between Pentium B940 and Core 2 Duo E6400. We've got no test results to judge.
Be aware that Pentium B940 is a notebook processor while Core 2 Duo E6400 is a desktop one.
Should you still have questions on choice between Pentium B940 and Core 2 Duo E6400, ask them in Comments section, and we shall answer.
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