Explore Intel Core i9-9900KS @ 4.00GHz technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.
Last updated: 2026-10-20Intel Core i9-9900KS @ 4.00GHz is a Desktop processor with 8 cores and 16 threads. It runs at 4 GHz and boosts up to 5 GHz. It records a PassMark CPU Mark of 19339 and a single-thread rating of 3024. Its stated TDP is 127 W.
A summary based on specifications and results.
Intel Core i9-9900KS @ 4.00GHz is a Desktop processor with 8 cores and 16 threads. It runs at 4 GHz and boosts up to 5 GHz. It records a PassMark CPU Mark of 19339 and a single-thread rating of 3024. Its stated TDP is 127 W.
Specification context
The Intel Core i9-9900KS @ 4.00GHz is a Desktop released in 2019. Recorded specifications include 8 cores and 16 threads, up to 5.00 GHz turbo, a 127 W reference TDP, a 19,339 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.
The 19,339 CPU Mark is a broad overall-performance measure, while the 3,024 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.
It uses socket LGA1151-2. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.
Recorded memory support: DDR4-2666. The 127 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.
FAQ
The main recorded details are 8 cores and 16 threads, up to 5.00 GHz turbo, a 127 W reference TDP, a 19,339 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.
The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.
Start with LGA1151-2 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.
The recorded reference TDP is 127 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.
This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.
Multi-axis comparison
A direct comparison with nearby processors from the same brand and a similar core count.
A higher CPU Mark indicates stronger overall performance.
Measures speed in tasks that depend on one CPU thread.
Estimated as CPU Mark divided by TDP.
Bars are relative to the processors shown here, not a global ranking of every CPU.
Snapshot from 2026-10-20
| Brand | Intel |
|---|---|
| Category | Desktop |
| Release year | 2019 |
| Socket | LGA1151-2 |
| Cores / threads | 8 / 16 |
| Base clock | 4.00 GHz |
| Max turbo | 5.00 GHz |
| TDP | 127 W |
| Integrated graphics | Intel UHD Graphics 630 |
| Memory type | DDR4 |
|---|---|
| Official speed | DDR4-2666 |
| Maximum capacity | 128 GB |
