Intel Core i9-9940X vs Intel Core i9-7940X
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CPU comparison with benchmarks
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| Intel Core i9-9940X | Intel Core i9-7940X | |
CPU comparisonIntel Core i9-9940X or Intel Core i9-7940X - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Intel Core i9-9940X has 14 cores with 28 threads and clocks with a maximum frequency of 4.50 GHz. Up to 128 GB of memory is supported in 4 memory channels. The Intel Core i9-9940X was released in Q4/2018. The Intel Core i9-7940X has 14 cores with 28 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 128 GB of memory in 4 memory channels. The Intel Core i9-7940X was released in Q4/2017. |
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| Intel Core i9 (78) | Family | Intel Core i9 (78) |
| Intel Core i 9000X (8) | CPU group | Intel Core i 7000X (9) |
| 9 | Generation | 7 |
| Skylake X Refresh | Architecture | Skylake X |
| Desktop / Server | Segment | Desktop / Server |
| Intel Core i9-7940X | Predecessor | -- |
| -- | Successor | Intel Core i9-9940X |
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CPU Cores and Base FrequencyThe Intel Core i9-9940X is a 14 core processor with a clock frequency of 3.30 GHz (4.50 GHz). The Intel Core i9-7940X has 14 CPU cores with a clock frequency of 3.10 GHz (4.30 GHz). |
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| Intel Core i9-9940X | Characteristic | Intel Core i9-7940X |
| 14 | Cores | 14 |
| 28 | Threads | 28 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| Yes | Overclocking ? | Yes |
| 3.30 GHz | Frequency | 3.10 GHz |
| 4.50 GHz | Turbo Frequency (1 Core) | 4.30 GHz |
| 4.20 GHz | Turbo Frequency (All Cores) | 3.70 GHz |
Memory & PCIeThe Intel Core i9-9940X supports a maximum of 128 GB of memory in 4 memory channels. The Intel Core i9-7940X can connect up to 128 GB of memory in 4 memory channels. |
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| Intel Core i9-9940X | Characteristic | Intel Core i9-7940X |
| DDR4-2666 | Memory | DDR4-2666 |
| 128 GB | Max. Memory | 128 GB |
| 4 (Quad Channel) | Memory channels | 4 (Quad Channel) |
| 85.4 GB/s | Max. Bandwidth | 85.4 GB/s |
| No | ECC | No |
| -- | L2 Cache | -- |
| 19.00 MB | L3 Cache | 19.00 MB |
| 3.0 | PCIe version | 3.0 |
| 44 | PCIe lanes | 44 |
| 43.3 GB/s | PCIe Bandwidth | 43.3 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i9-9940X has a TDP of 165 W, that of the Intel Core i9-7940X is 165 W. |
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| Intel Core i9-9940X | Characteristic | Intel Core i9-7940X |
| 165 W | TDP (PL1 / PBP) | 165 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| 92 °C | Tjunction max. | -- |
Technical detailsThe Intel Core i9-9940X has a 19.00 MB cache, while the Intel Core i9-7940X cache has a total of 19.00 MB. |
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| Intel Core i9-9940X | Characteristic | Intel Core i9-7940X |
| 14 nm | Technology | 14 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX2, AVX-512 | ISA extensions | SSE4.1, SSE4.2, AVX2, AVX-512 |
| LGA 2066 | Socket | LGA 2066 |
| VT-x, VT-x EPT, VT-d | Virtualization | VT-x, VT-x EPT, VT-d |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
| Q4/2018 | Release date | Q4/2017 |
| 1387 $ | Release price | 1399 $ |
| show more data | show more data | |
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14C 28T @ 3.30 GHz (4.50 GHz) buy now on Amazon and save!
14C 28T @ 3.10 GHz (4.30 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Core i9-7940X
14C 28T @ 4.30 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Core i9-7940X
14C 28T @ 4.30 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Core i9-7940X
14C 28T @ 4.30 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Cinebench R20 (Single-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Core i9-7940X
14C 28T @ 4.30 GHz |
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Cinebench R20 (Multi-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Blender 2.81 (bmw27)
Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
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Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Core i9-7940X
14C 28T @ 3.70 GHz |
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Devices using this processor |
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| Intel Core i9-9940X | Intel Core i9-7940X |
| Unknown | Unknown |
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