Intel
Intel Core i9-11900K
Intel's Rocket Lake flagship for LGA1200: 8 cores and 16 threads on a 14 nm process, up to 5.3 GHz, 16 MB cache, PCIe 4.0, DDR4-3200 and Intel UHD Graphics 750, launched in March 2021 with an unlocked multiplier.
Pros
- 8 cores and 16 threads with boost up to 5.3 GHz
- Unlocked multiplier for overclocking on Z590 and other supported boards
- PCIe 4.0 support with 20 CPU lanes
- Integrated Intel UHD Graphics 750 (Xe-based) for display output without a discrete card
Cons
- Built on a 14 nm process, with high power draw under load despite the 125 W rating
- Only 8 cores, fewer than the 10-core Core i9-10900K it succeeded
- Requires an LGA1200 motherboard, an end-of-line socket
- Memory limited to DDR4-3200
Average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core i9-11900K
General
- Announced
- 2021
- Socket
- LGA1200
- Process
- 14 nm
- Base TDP
- 125 W
- Unlocked multiplier
- Yes
Cores & Clocks
- Cores
- 8
- Threads
- 16
- Base clock
- 3.5 GHz
- Boost clock
- 5.3 GHz
- L2 cache
- 4 MB
- L3 cache
- 16 MB
Integrated GPU
- iGPU
- Intel UHD Graphics 750
- iGPU clock
- 1,300 MHz
Memory
- Memory support
- DDR4-3200
- Max memory
- 128 GB
- Memory channels
- 2
Platform
- PCIe version
- 4
- CPU PCIe lanes
- 20
Benchmarks
- Cinebench R23 (single)
- 1,640Bottom 49%
- Cinebench R23 (multi)
- 14,669Top 49%
- PassMark
- 24,888Top 45%
- PassMark (single thread)
- 3,501Top 45%
Quick answers
Is the Intel Core i9-11900K good in 2026?
The Intel Core i9-11900K earns an Inno Score of 50.3/100 (“Average”) based on its specs and benchmark results. Intel's Rocket Lake flagship for LGA1200: 8 cores and 16 threads on a 14 nm process, up to 5.3 GHz, 16 MB cache, PCIe 4.0, DDR4-3200 and Intel UHD Graphics 750, launched in March 2021 with an unlocked multiplier.
What are the key specs of the Intel Core i9-11900K?
Cores: 8 · Threads: 16 · Boost clock: 5.3 GHz · Socket: LGA1200
What are the closest alternatives to the Intel Core i9-11900K?
Its closest rivals on InnoReviews are Intel Core i5-12490F, AMD Ryzen 5 5600X, Intel Core i5-12500 — open the comparison pages for a spec-by-spec breakdown.
