i9-11900KF vs i7-940XM Extreme Edition
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 580 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core i7EE | no data |
| Power efficiency | no data | 4.74 |
| Designer | Intel | Intel |
| Manufacturer | no data | Intel |
| Architecture codename | Nehalem (2008−2010) | Rocket Lake (2021) |
| Release date | 5 February 2010 (15 years ago) | 16 March 2021 (4 years ago) |
| Launch price (MSRP) | $1,096 | no data |
Detailed specifications
Core i7-940XM Extreme Edition and Core i9-11900KF 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) | 8 (Octa-Core) |
| Threads | 8 | 16 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 2.13 GHz | 5.2 GHz |
| Bus type | DMI | no data |
| Bus rate | 2.5 GT/s | 8 GT/s |
| Multiplier | 16 | no data |
| L1 cache | 256 KB | 64K (per core) |
| L2 cache | 1 MB | 256K (per core) |
| L3 cache | 8 MB | 16 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 296 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 774 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i7-940XM Extreme Edition and Core i9-11900KF 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 | no data | FCLGA1200 |
| Power consumption (TDP) | 55 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-940XM Extreme Edition and Core i9-11900KF. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
Core i7-940XM Extreme Edition and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
| Identity Protection | - | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-940XM Extreme Edition and Core i9-11900KF are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-940XM Extreme Edition and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1333 | DDR4-3200 |
| Maximum memory size | 8 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21.335 GB/s | 50 GB/s |
Peripherals
Specifications and connection of peripherals supported by Core i7-940XM Extreme Edition and Core i9-11900KF.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | 16 | 20 |
Pros & cons summary
| Recency | 5 February 2010 | 16 March 2021 |
| Physical cores | 4 | 8 |
| Threads | 8 | 16 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 55 Watt | 125 Watt |
i7-940XM Extreme Edition has 127.3% lower power consumption.
i9-11900KF, on the other hand, has an age advantage of 11 years, 100% more physical cores and 100% more threads, and a 221.4% more advanced lithography process.
We couldn't decide between Intel Core i7-940XM Extreme Edition and Intel Core i9-11900KF. We've got no test results to judge.
Be aware that Core i7-940XM Extreme Edition is a notebook processor while Core i9-11900KF is a desktop one.
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