i7-3940XM Extreme Edition vs i7-7820X
Primary details
Comparing Core i7-7820X and Core i7-3940XM Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.
Place in the ranking | 724 | not rated |
Place by popularity | not in top-100 | not in top-100 |
Cost-effectiveness evaluation | 3.47 | no data |
Market segment | Desktop processor | Laptop |
Series | Intel Core i7 | Intel Core i7EE |
Power efficiency | 7.31 | no data |
Architecture codename | Skylake (server) (2017−2018) | Ivy Bridge (2012−2013) |
Release date | 26 June 2017 (7 years ago) | no data |
Launch price (MSRP) | $599 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i7-7820X and Core i7-3940XM Extreme Edition 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 | 8 (Octa-Core) | 4 (Quad-Core) |
Threads | 16 | 8 |
Base clock speed | 3.6 GHz | no data |
Boost clock speed | 4.5 GHz | 3 GHz |
Bus type | DMI 3.0 | DMI |
Bus rate | 4 × 8 GT/s | 5 GT/s |
Multiplier | 36 | 30 |
L1 cache | 64 KB (per core) | no data |
L2 cache | 1 MB (per core) | 1 MB |
L3 cache | 11 MB (shared) | 8 MB |
Chip lithography | 14 nm | 22 nm |
Maximum core temperature | 99 °C | no data |
Maximum case temperature (TCase) | 72 °C | no data |
64 bit support | + | + |
Windows 11 compatibility | + | no data |
Unlocked multiplier | + | - |
Compatibility
Information on Core i7-7820X and Core i7-3940XM Extreme Edition 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 | FCLGA2066 | no data |
Power consumption (TDP) | 140 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-7820X and Core i7-3940XM Extreme Edition. You'll probably need this information if you require some particular technology.
Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | no data |
AES-NI | + | + |
AVX | + | + |
vPro | no data | + |
Enhanced SpeedStep (EIST) | + | + |
Turbo Boost Technology | 2.0 | no data |
Hyper-Threading Technology | + | no data |
TSX | + | - |
Turbo Boost Max 3.0 | + | no data |
Security technologies
Core i7-7820X and Core i7-3940XM Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.
TXT | no data | + |
EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-7820X and Core i7-3940XM Extreme Edition are enumerated here.
VT-d | + | no data |
VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core i7-3940XM Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.
Supported memory types | DDR4-2666 | no data |
Maximum memory size | 128 GB | 32 GB |
Max memory channels | 4 | no data |
Maximum memory bandwidth | 85.33 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-7820X and Core i7-3940XM Extreme Edition.
PCIe version | 3.0 | 3.0 |
PCI Express lanes | 28 | 16 |
Pros & cons summary
Physical cores | 8 | 4 |
Threads | 16 | 8 |
Chip lithography | 14 nm | 22 nm |
Power consumption (TDP) | 140 Watt | 55 Watt |
i7-7820X has 100% more physical cores and 100% more threads, and a 57.1% more advanced lithography process.
i7-3940XM Extreme Edition, on the other hand, has 154.5% lower power consumption.
We couldn't decide between Core i7-7820X and Core i7-3940XM Extreme Edition. We've got no test results to judge.
Note that Core i7-7820X is a desktop processor while Core i7-3940XM Extreme Edition is a notebook one.
Should you still have questions on choice between Core i7-7820X and Core i7-3940XM Extreme Edition, ask them in Comments section, and we shall answer.
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