Intel
Intel Core i9-9900KS
Special-edition Coffee Lake Refresh chip for LGA1151: eight cores and 16 threads with a 4.0 GHz base clock and a 5.0 GHz all-core turbo, 16 MB of cache and a 127 W TDP, released on October 30, 2019 at a $513 recommended price.
Pros
- Eight cores and 16 threads with a 4.0 GHz base clock and 5.0 GHz maximum turbo
- Unlocked multiplier and Intel UHD Graphics 630 integrated graphics
- 16 MB Smart Cache and dual-channel DDR4-2666 support
- In review testing, a few percent faster than the Core i9-9900K
Cons
- 127 W base TDP, and power draw under load can exceed 250 W, so strong cooling is needed
- No cooler included in the box
- Launched at $513, a premium over the Core i9-9900K for a small performance gain
- Requires an LGA1151 (300-series) motherboard; not compatible with newer sockets
Below average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core i9-9900KS
General
- Announced
- 2019
- Socket
- FCLGA1151
- Process
- 14 nm
- Base TDP
- 127 W
- Unlocked multiplier
- Yes
- Cooler included
- No
Cores & Clocks
- Cores
- 8
- Threads
- 16
- Base clock
- 4 GHz
- Boost clock
- 5 GHz
- L2 cache
- 2 MB
- L3 cache
- 16 MB
Integrated GPU
- iGPU
- Intel UHD Graphics 630
- iGPU clock
- 1,200 MHz
Memory
- Memory support
- DDR4-2666
- Max memory
- 128 GB
- Memory channels
- 2
Platform
- PCIe version
- 3
- CPU PCIe lanes
- 16
Benchmarks
- Geekbench 6 (single)
- 1,892Bottom 48%
- Geekbench 6 (multi)
- 9,953Top 50%
- PassMark
- 19,345Bottom 42%
- PassMark (single thread)
- 3,025Bottom 42%
Quick answers
Is the Intel Core i9-9900KS good in 2026?
The Intel Core i9-9900KS earns an Inno Score of 45.5/100 (“Below average”) based on its specs and benchmark results. Special-edition Coffee Lake Refresh chip for LGA1151: eight cores and 16 threads with a 4.0 GHz base clock and a 5.0 GHz all-core turbo, 16 MB of cache and a 127 W TDP, released on October 30, 2019 at a $513 recommended price.
What are the key specs of the Intel Core i9-9900KS?
Cores: 8 · Threads: 16 · Boost clock: 5 GHz · Socket: FCLGA1151
What are the closest alternatives to the Intel Core i9-9900KS?
Its closest rivals on InnoReviews are Intel Core i9-10900F, Intel Core i7-11700, AMD Ryzen 5 5600GT — open the comparison pages for a spec-by-spec breakdown.
