8-Core Desktop Processing
With 8 cores and 16 threads, the Core i9-11900K supports demanding desktop workloads on compatible LGA 1200 systems.
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Updated 3 months ago
8-core 11th Gen Intel desktop flagship for LGA1200 systems. It remains purchasable for upgrades on older Intel motherboards.

With 8 cores and 16 threads, the Core i9-11900K supports demanding desktop workloads on compatible LGA 1200 systems.
A 3.5 GHz base clock and up to 5.3 GHz maximum boost clock provide high clock speeds within its 125 W thermal design power.
Overclocking support, PCIe 4.0, DDR4-3200 memory support up to 128 GB, and integrated graphics add flexibility for compatible builds.
The Intel Core i9-11900K is an 11th Gen Rocket Lake desktop processor for LGA 1200 systems, featuring 8 cores, 16 threads, integrated graphics, DDR4-3200 memory support up to 128 GB, PCIe 4.0, and an unlocked design without an included cooler.
The reviewer concluded that while the i9-11900K is a powerful gaming processor, its performance gains over cheaper, older alternatives are too marginal to justify its high price tag.
The reviewer did not recommend the CPU, highlighting that it costs more and performs worse than the previous-generation i9-10900K in many productivity tasks, while failing to be competitive with AMD's offerings at its price point.
The reviewer assessed the 8-core, 16-thread flagship and noted that expectations were low following early pre-release reviews.
The reviewer noted that while die-hard Intel loyalists could opt for the chip, its regression in core count and modest performance upside made alternatives from both AMD and Intel's own 10th Gen lineup more attractive.
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| Attribute | Specification | Notes |
|---|---|---|
| Architecture | Rocket Lake (11th Gen) | |
| Base Clock Speed | 3.5 GHz | GHz |
| Cache Size | 16 MB | MB |
| Core Count | 8 cores | cores |
| Cpu Socket | LGA 1200 | |
| Included Cooler | No | |
| Integrated Graphics | Yes | |
| Launch Date | 2021-03-16 | |
| Manufacturing Process | 14 nm | |
| Max Boost Clock Speed | 5.3 GHz | GHz |
| Memory Support | DDR4-3200 (max 128 GB) | |
| Overclocking Support | Yes | |
| Pci Express Version | PCIe 4.0 | |
| Thermal Design Power | 125 W | W |
| Thread Count | 16 threads | threads |

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