Intel Core i9-12900K Processor

The Intel Core i9-12900K Processor — 16 cores and 24 threads, 3.2 GHz base rising to 5.2 GHz with Turbo Boost, 30 MB Intel Smart Cache, 125 W processor base power, LGA1700. Supplied from stock with a 1-year warranty.

The first hybrid i9, 16 cores

The i9-12900K opened the hybrid era: eight Golden Cove performance cores plus eight Gracemont efficiency cores — sixteen cores, twenty-four threads — at 3.20 GHz P-core base with a 5.20 GHz Turbo, an unlocked multiplier, 30 MB of cache and a 125 W base power, launched Q4 2021 on LGA1700.

Thread Director schedules work between the two core types automatically, and DDR5-4800 support (with DDR4-3200 fallback) plus PCIe 5.0 marked the largest platform jump in a decade. It retook the performance lead in both gaming and multithreaded work on launch.

Technical specifications

Instruction set extensions: Intel SSE4.1, SSE4.2, AVX and AVX2. Security and virtualisation: AES-NI, Intel VT-x with EPT and VT-d, Intel Boot Guard.

Which systems take this processor

Anything on the LGA1700 socket with an Intel 600 or 700 series chipset: H610, B660, H670, Q670, Z690, W680, B760, H770 and Z790. Both DDR4 and DDR5 boards exist for this socket — the memory type is a property of the board, not the processor, and these parts support either (check the memory-speed column for the maximum per type).

Workstation and high-end desktop builds — Dell Precision 3660 / 3680, HP Z2 G9, Lenovo ThinkStation P360 / P520s-class. The hybrid P+E core layout with Thread Director handles heavy parallel workloads from rendering to virtualisation.

Performance desktops — Z690 / Z790 boards take the unlocked i9 parts in stride; note that sustained all-core loads on the K-series run well past the base power figure, so budget cooling accordingly.

Home lab and NAS builds — W680 boards support ECC UDIMMs with Core parts, and the integrated UHD 770 engine keeps transcoding on the iGPU (KF-variants need a discrete card).

One caveat when buying a board separately: 600 series boards may need a BIOS update before they recognise a 14th Generation part, and the LGA1700 socket has a loading-frame retention mechanism — check that the board ships with the correct frame. Tell us the board or the machine model when you enquire and we will confirm.

How it compares across the i9 line

The 12900KF drops the iGPU, and the twenty-four-core 13900K is the Raptor Lake successor on the same board — the in-place upgrade that kept LGA1700 relevant.

How each processor is tested before it ships

1. Visual inspection of the integrated heat spreader, substrate and contact pads; the sSpec laser marking (SRL4H on our i9-12900K stock) is verified against the Intel specification sheet.
2. Burn-in on a matched diagnostic board with a pair of memory modules of the correct type for this platform.
3. All populated memory channels and the primary PCIe lanes are validated, then the processor is identified in the BIOS and in the operating system.
4. A sustained multi-threaded load test at full core count, with the clock and thermal readings recorded.
5. Thermal paste cleaned off, final inspection, then packaging in an anti-static tray with foam — which is how it arrives to you.

Warranty and lead time

Every processor is covered by a 1-year warranty against defects in workmanship and function. If a part fails within the period we replace it or refund it, and we cover return shipping on a verified fault. Stock is held in our own warehouse and normally dispatches within three to seven working days; tracking is issued at dispatch.

Purchasing and volume enquiries

The minimum order quantity for this processor is 2 units. Price is quotation-based rather than listed, because CPU pricing moves with each incoming batch — send us the quantity you need and we will come back with a firm quote and the current lead time. Larger quantities ship from the same production batch so the sSpec and the stepping stay consistent across your order.