Core i9-11900KF

The Core i9-11900KF is a 8-core / 16-thread processor based on the Rocket Lake (2021) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 5.2 GHz from a base frequency of 3.5 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 16 MB (total) of L3 cache, plus 256K (per core) of L2 cache and 64K (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 24,585, placing it in the Mid-Range performance tier as a Aging generation product. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 15,500.

The Core i9-11900KF fits into the LGA1200 socket and supports PCIe 4.0 with 20 total PCIe lanes for expansion cards and storage. It supports DDR4-3200 memory at speeds up to DDR4-3200 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 128 GB across 2 channels (dual-channel doubles bandwidth).

It features an unlocked multiplier, allowing enthusiasts to overclock beyond stock frequencies for additional performance. It supports AVX-512 instructions — specialized SIMD operations that significantly accelerate AI inference, scientific computing, and video encoding workloads. Virtualization: VT-x, VT-d — enables running virtual machines efficiently (important for development and server workloads).

The Core i9-11900KF has a rated TDP (Thermal Design Power) of 125 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: AIO 240mm+.

At an average price of $349 (MSRP: $513), the Core i9-11900KF delivers 70 PassMark points per dollar. Performance ranking position: #590 out of all indexed processors.