Core i9-12900KS

The Core i9-12900KS is a 16-core / 24-thread processor based on the Alder Lake-S (2022) architecture, manufactured on a Intel 7 nm process node. It reaches a maximum boost clock of 5.3 GHz from a base frequency of 3.4 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 30 MB (total) of L3 cache, plus 1.25 MB (per core) of L2 cache and 80K (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 43,528, placing it in the Enthusiast performance tier as a Aging generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 2,082. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 27,796.

The Core i9-12900KS fits into the LGA1700 socket and supports PCIe 5.0 with 20 total PCIe lanes for expansion cards and storage. It supports DDR5-4800, DDR4-3200 memory at speeds up to DDR5-4800 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 128 GB across 2 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers. Integrated graphics: UHD 770 — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.

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 i9-12900KS has a rated TDP (Thermal Design Power) of 150 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 360mm+.

At an average price of $385 (MSRP: $739), the Core i9-12900KS delivers 113 PassMark points per dollar. Performance ranking position: #259 out of all indexed processors.