🧠 Comparison · CPU comparison
Intel Core Ultra 9 285K vs AMD Ryzen 9 9950X: specs comparison
Intel Core Ultra 9 285K came out in 2024 (Arrow Lake, TSMC N3B), AMD Ryzen 9 9950X in 2024 (Zen 5, TSMC 4 nm). Cores and threads: 24/24 on Core Ultra 9 285K vs 16/32 on Ryzen 9 9950X. Same max clock: 5.7 GHz. L3 cache: 36 MB vs 64 MB. Core Ultra 9 285K uses the LGA1851 socket, Ryzen 9 9950X uses AM5: they need different motherboards. Clocks from different vendors are not directly comparable, so those rows are not highlighted.
In short. The table below is built from the official spec sheets. Green marks the best value in a row. This is not a benchmark: check tests in the games and apps you use.
| Spec | Intel Core Ultra 9 285K 24 cores · LGA1851 · 2024 Spec sheet → | AMD Ryzen 9 9950X 16 cores · AM5 · 2024 Spec sheet → |
|---|---|---|
| Device type | Desktop PC | Desktop PC |
| Release year | 2024 | 2024 |
| Architecture | Arrow Lake | Zen 5 |
| Cores | 24 (8P + 16E) | 16 |
| Threads | 24 | 32 |
| Base clock GHz | 3.7GHz | 4.3GHz |
| Max clock GHz | 5.7GHz | 5.7GHz |
| L3 cache MB | 36MB | 64MB |
| Process node | TSMC N3B | TSMC 4 nm |
| TDP W | 125 / 250 W | 170W |
| Socket | LGA1851 | AM5 |
| Memory | DDR5-6400, up to 192 GB | DDR5-5600, up to 192 GB |
| Integrated graphics | Intel Graphics (4 Xe cores) | Radeon Graphics (2 CU) |
How to use it
- Compare cores and threads — they matter most for video editing, 3D and multitasking.
- For gaming, clock speed and L3 cache matter more — especially on AMD X3D chips.
- Check the socket and supported memory: will the CPU fit your board.
- To add a third processor, press “Change models or add a third”.
More CPU comparisons
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- i5-13600K vs Ryzen 5 7600X →
- i5-14600K vs Ryzen 7 7700X →
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Where the data comes from
Specs follow the official vendor spec sheets: Intel Core Ultra 9 285K, AMD Ryzen 9 9950X.
FAQ
Which is better — Core Ultra 9 285K or Ryzen 9 9950X?
It depends on what you do. By the specs: Ryzen 9 9950X has more cores and threads; Ryzen 9 9950X has more L3 cache. There are no benchmarks in the table — check tests in the games and apps you need.
How many cores and threads do Core Ultra 9 285K and Ryzen 9 9950X have?
Core Ultra 9 285K: 24 (8P + 16E) cores, 24 threads. Ryzen 9 9950X: 16 cores, 32 threads.
Do Core Ultra 9 285K and Ryzen 9 9950X fit the same motherboard?
No. Core Ultra 9 285K uses the LGA1851 socket and Ryzen 9 9950X uses AM5. Memory differs too: DDR5-6400, up to 192 GB on Core Ultra 9 285K and DDR5-5600, up to 192 GB on Ryzen 9 9950X.
Which processor is more power-efficient — Core Ultra 9 285K or Ryzen 9 9950X?
Per the spec sheet, Core Ultra 9 285K has a TDP of 125 / 250 W and Ryzen 9 9950X has 170 W. Lower TDP means easier cooling and a quieter system. Real power draw depends on the load and the board or laptop settings.
Can I add a third processor?
Yes. Open the interactive comparison — the pair is already selected, you can add two more models and share the link.
Where do the specs come from?
From the official Intel, AMD, Apple, Qualcomm and MediaTek spec sheets — each model in the table header links to its vendor page. If a vendor doesn’t publish a figure, it isn’t in the table.
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