Celeron M 340 vs i7-640M
Primary details
Comparing Core i7-640M and Celeron M 340 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2260 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Celeron M |
| Power efficiency | 3.52 | no data |
| Architecture codename | Arrandale (2010−2011) | Banias (2003) |
| Release date | 13 September 2010 (14 years ago) | no data (2024 years ago) |
| Launch price (MSRP) | $346 | no data |
Detailed specifications
Core i7-640M and Celeron M 340 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 | 4 | 1 |
| Base clock speed | 2.8 GHz | 1.5 GHz |
| Boost clock speed | 3.46 GHz | 1.5 GHz |
| Bus type | DMI 1.0 | no data |
| Bus rate | 1 × 2.5 GT/s | 400 MHz |
| Multiplier | 21 | no data |
| L1 cache | 128 KB | no data |
| L2 cache | 512 KB | no data |
| L3 cache | 4 MB (shared) | 512 KB L2 |
| Chip lithography | 32 nm | 130 nm |
| Die size | 81+114 mm2 | no data |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | 382 Million | no data |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 1.356V |
Compatibility
Information on Core i7-640M and Celeron M 340 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) | no data |
| Socket | BGA1288,PGA988 | PPGA478 |
| Power consumption (TDP) | 35 Watt | 24.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-640M and Celeron M 340. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| AES-NI | + | - |
| FMA | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | + | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | - |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | no data | - |
| PAE | 36 Bit | 32 Bit |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| FSB parity | no data | - |
Security technologies
Core i7-640M and Celeron M 340 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-640M and Celeron M 340 are enumerated here.
| VT-d | + | no data |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-640M and Celeron M 340. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 8 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 17.051 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Previous Generation Intel® Processors | no data |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 766 MHz | no data |
Graphics interfaces
Available interfaces and connections of Core i7-640M and Celeron M 340 integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-640M and Celeron M 340.
| 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.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 4 | 1 |
| Chip lithography | 32 nm | 130 nm |
| Power consumption (TDP) | 35 Watt | 24 Watt |
i7-640M has 100% more physical cores and 300% more threads, and a 306.3% more advanced lithography process.
Celeron M 340, on the other hand, has 45.8% lower power consumption.
We couldn't decide between Core i7-640M and Celeron M 340. We've got no test results to judge.
Should you still have questions on choice between Core i7-640M and Celeron M 340, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
