i3-2348M vs i7-3940XM
Aggregate performance score
Core i7-3940XM outperforms Core i3-2348M by a whopping 360% based on our aggregate benchmark results.
Primary details
Comparing Core i7-3940XM and Core i3-2348M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1484 | 2601 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Core i3 |
| Power efficiency | 6.33 | 2.16 |
| Architecture codename | Ivy Bridge (2012−2013) | Sandy Bridge (2011−2013) |
| Release date | 3 September 2012 (12 years ago) | 1 January 2013 (11 years ago) |
| Launch price (MSRP) | $1,096 | $225 |
Detailed specifications
Core i7-3940XM and Core i3-2348M 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 8 | 4 |
| Base clock speed | 3 GHz | 2.3 GHz |
| Boost clock speed | 3.9 GHz | 2.3 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | 5 GT/s | 4 × 5 GT/s |
| Multiplier | no data | 23 |
| L1 cache | 64K (per core) | 128 KB |
| L2 cache | 256K (per core) | 512 KB |
| L3 cache | 8 MB (shared) | 3 MB |
| Chip lithography | 22 nm | 32 nm |
| Die size | 160 mm2 | 149 mm2 |
| Maximum core temperature | 105 °C | 85C (PGA); 100C (BGA) |
| Number of transistors | 1,400 million | 624 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i7-3940XM and Core i3-2348M 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 (Uniprocessor) |
| Socket | FCPGA988 | PPGA988 |
| Power consumption (TDP) | 55 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-3940XM and Core i3-2348M. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | Intel® AVX |
| AES-NI | + | - |
| FMA | - | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | + |
| Demand Based Switching | - | - |
| FDI | + | + |
| Fast Memory Access | + | + |
Security technologies
Core i7-3940XM and Core i3-2348M technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | + | + |
| Anti-Theft | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-3940XM and Core i3-2348M are enumerated here.
| AMD-V | + | + |
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-3940XM and Core i3-2348M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 32 GB | 16 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 4000 | Intel HD Graphics 3000 |
| Quick Sync Video | + | + |
| Clear Video HD | + | + |
| Graphics max frequency | 1.35 GHz | 1.15 GHz |
| InTru 3D | + | + |
Graphics interfaces
Available interfaces and connections of Core i7-3940XM and Core i3-2348M integrated GPUs.
| Number of displays supported | 3 | 2 |
| eDP | + | + |
| DisplayPort | + | + |
| HDMI | + | + |
| SDVO | + | + |
| CRT | + | + |
Peripherals
Specifications and connection of peripherals supported by Core i7-3940XM and Core i3-2348M.
| PCIe version | 3.0 | 2 |
| PCI Express lanes | 16 | 16 |
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.
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Cinebench 11.5 64-bit single-core
Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.
Pros & cons summary
| Performance score | 3.68 | 0.80 |
| Integrated graphics card | 1.18 | 0.66 |
| Recency | 3 September 2012 | 1 January 2013 |
| Physical cores | 4 | 2 |
| Threads | 8 | 4 |
| Chip lithography | 22 nm | 32 nm |
| Power consumption (TDP) | 55 Watt | 35 Watt |
i7-3940XM has a 360% higher aggregate performance score, 78.8% faster integrated GPU, 100% more physical cores and 100% more threads, and a 45.5% more advanced lithography process.
i3-2348M, on the other hand, has an age advantage of 3 months, and 57.1% lower power consumption.
The Core i7-3940XM is our recommended choice as it beats the Core i3-2348M in performance tests.
Should you still have questions on choice between Core i7-3940XM and Core i3-2348M, ask them in Comments section, and we shall answer.
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