Phenom X4 9950 BE (125W) vs i7-3940XM
Primary details
Comparing Core i7-3940XM and Phenom X4 9950 BE (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1496 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core i7 | no data |
| Power efficiency | 6.33 | no data |
| Architecture codename | Ivy Bridge (2012−2013) | Agena (2007−2008) |
| Release date | 3 September 2012 (12 years ago) | October 2008 (16 years ago) |
| Launch price (MSRP) | $1,096 | no data |
Detailed specifications
Core i7-3940XM and Phenom X4 9950 BE (125W) 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) | 4 (Quad-Core) |
| Threads | 8 | 4 |
| Base clock speed | 3 GHz | no data |
| Boost clock speed | 3.9 GHz | 2.6 GHz |
| Bus rate | 5 GT/s | no data |
| L1 cache | 64K (per core) | 128 KB (per core) |
| L2 cache | 256K (per core) | 512 KB (per core) |
| L3 cache | 8 MB (shared) | 2 MB (shared) |
| Chip lithography | 22 nm | 65 nm |
| Die size | 160 mm2 | 285 mm2 |
| Maximum core temperature | 105 °C | no data |
| Number of transistors | 1,400 million | 450 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | + |
Compatibility
Information on Core i7-3940XM and Phenom X4 9950 BE (125W) 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 | FCPGA988 | AM2+ |
| Power consumption (TDP) | 55 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-3940XM and Phenom X4 9950 BE (125W). You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | no data |
| My WiFi | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i7-3940XM and Phenom X4 9950 BE (125W) technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | - |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-3940XM and Phenom X4 9950 BE (125W) are enumerated here.
| AMD-V | + | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-3940XM and Phenom X4 9950 BE (125W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 4000 | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.35 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-3940XM and Phenom X4 9950 BE (125W) integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-3940XM and Phenom X4 9950 BE (125W).
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Threads | 8 | 4 |
| Chip lithography | 22 nm | 65 nm |
| Power consumption (TDP) | 55 Watt | 125 Watt |
i7-3940XM has 100% more threads, a 195.5% more advanced lithography process, and 127.3% lower power consumption.
We couldn't decide between Core i7-3940XM and Phenom X4 9950 BE (125W). We've got no test results to judge.
Be aware that Core i7-3940XM is a notebook processor while Phenom X4 9950 BE (125W) is a desktop one.
Should you still have questions on choice between Core i7-3940XM and Phenom X4 9950 BE (125W), 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.
