AMD Ryzen 9 7945HX vs Intel Core i9-11900K
Head-to-head specifications
| Metric | AMD Ryzen 9 7945HX | Intel Core i9-11900K | Difference |
|---|---|---|---|
| Cores / threads | 16 / 32 | 8 / 16 | — |
| Boost clock (GHz) | 5.4 | 5.3 | — |
| Single-core score | 2,750 | 2,200 | +25.0% |
| Multi-core score | 17,500 | 10,800 | +62.0% |
| TDP (W) | 55 | 125 | — |
- AMD Ryzen 9 7945HX is faster than Intel Core i9-11900K by 25.0% in single-core and faster by 62.0% in multi-core.
- AMD Ryzen 9 7945HX also draws less power (55W vs 125W).
Verdict: Ryzen 9 7945HX or i9-11900K?
AMD Ryzen 9 7945HX advantages
- Single-core speed (+20%)
- Multi-core speed (+38%)
- Power efficiency (+56%)
Intel Core i9-11900K advantages
- No decisive advantage on the tracked metrics.
Which should you choose?
- Choose the AMD Ryzen 9 7945HX if you mainly game or want snappy everyday responsiveness.
- Choose the AMD Ryzen 9 7945HX if you render video, compile code or run heavy multitasking.
AMD Ryzen 9 7945HX vs Intel Core i9-11900K: which should you choose?
AMD Ryzen 9 7945HX — 16-core / 32-thread AMD laptop processor (2023) with a boost clock of 5.4 GHz and 55 W TDP.
Intel Core i9-11900K — 8-core / 16-thread Intel desktop processor (2021) with a boost clock of 5.3 GHz and 125 W TDP.
AMD Ryzen 9 7945HX vs Intel Core i9-11900K: AMD Ryzen 9 7945HX leads in multi-core performance. AMD Ryzen 9 7945HX is faster than Intel Core i9-11900K by 25.0% in single-core and faster by 62.0% in multi-core. AMD Ryzen 9 7945HX also draws less power (55W vs 125W).
Gaming and single-threaded work
Games and everyday responsiveness lean on single-core speed. The AMD Ryzen 9 7945HX leads there with a single-core score of 2,750 versus 2,200, so it is the marginally better pick for high-refresh gaming — though at typical resolutions the GPU usually decides frame rates.
Content creation and multitasking
For rendering, compilation, video export and other all-core workloads, the AMD Ryzen 9 7945HX is stronger, posting 17,500 multi-core against 10,800. Its 16 cores and 32 threads give it real headroom for heavy parallel jobs.
Power and platform
The AMD Ryzen 9 7945HX is the more efficient chip at 55 W versus 125 W, which means less heat, quieter cooling and lower running costs under sustained load.
The verdict
Both are credible choices in the processor comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the AMD Ryzen 9 7945HX better than the Intel Core i9-11900K?
AMD Ryzen 9 7945HX is the clearly stronger overall choice, winning most of the dimensions that matter. AMD Ryzen 9 7945HX is faster than Intel Core i9-11900K by 25.0% in single-core and faster by 62.0% in multi-core.
What is the main difference between the AMD Ryzen 9 7945HX and the Intel Core i9-11900K?
AMD Ryzen 9 7945HX is faster than Intel Core i9-11900K by 25.0% in single-core and faster by 62.0% in multi-core. AMD Ryzen 9 7945HX also draws less power (55W vs 125W).
Which should I choose?
Choose the AMD Ryzen 9 7945HX if you mainly game or want snappy everyday responsiveness. Choose the AMD Ryzen 9 7945HX if you render video, compile code or run heavy multitasking.
Methodology
Each processor is scored on a normalized benchmark index aggregating single-core and multi-core results. Single-core predicts responsiveness and gaming; multi-core predicts throughput in rendering and compilation. We also report cores/threads, boost clock and TDP.