Intel · Core i9-X · 2018 · LGA2066
The Intel Core i9-9940X is a desktop processor with 14 cores, released in 2018 at an MSRP of $1,399. It is part of the Core i9-X lineup, using the Skylake-X platform, and fits the LGA2066 socket. Internally, it is built on the "Skylake-X" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 28 threads for improved parallelism. The Core i9-9940X has a base clock of 3.3 GHz and can boost up to 4.5 GHz depending on workload and thermal headroom. Intel manufactures the "Skylake-X" silicon on a 14nm process node. The multiplier is unlocked, making overclocking straightforward. This processor supports DDR4 memory. With a TDP of 165W, the Core i9-9940X runs hot and requires a capable cooling setup. This processor has no integrated graphics — a discrete GPU is required. The cache hierarchy consists of 32KB/core of L1, 1MB/core of L2, and 19.25MB of L3 cache.
14-core Skylake-X refresh.
| Brand | Intel |
|---|---|
| Family | Core i9-X |
| Series | Skylake-X |
| Architecture | Skylake-X |
| Type | Desktop |
| Launch year | 2018 |
| Cores | 14 |
| Threads | 28 |
| Base clock | 3.3 GHz |
| Boost clock | 4.5 GHz |
| L1 cache | 32KB/core |
| L2 cache | 1MB/core |
| L3 cache | 19.25MB |
| TDP | 165W |
| Socket | LGA2066 |
| Process | 14nm |
| Memory type | DDR4 |
| Integrated graphics | None |
| Chipsets | X299 |
| Launch MSRP | $1,399 |
| Part number | BX80673I99940X |