i9-12900K vs Ryzen 7 5800X3D
Full specification comparison between the Intel Core i9-12900K (2021) and the AMD Ryzen 7 5800X3D (2022).
i9-12900K
Intel Mid-range
- ✓ More cores (16 vs 8)
- ✓ Higher boost clock (5.2 vs 4.5 GHz)
- ✓ Has integrated graphics
Ryzen 7 5800X3D
AMD Mid-range
- ✓ Larger L3 cache (96 MB vs 30 MB)
- ✓ Lower power draw (105 W vs 125 W)
- ✓ Cheaper at launch ($449 vs $589)
- ✓ Newer (2022 vs 2021)
- ✓ Better performance per dollar
Verdict: The i9-12900K and Ryzen 7 5800X3D deliver essentially the same level of performance — the difference is within a few percent and won't be noticeable in real use. The decision comes down to price, power draw and features.
Note they use different platforms (LGA1700 vs AM4), so this is a motherboard decision too, not just a CPU swap.
At launch pricing, the Ryzen 7 5800X3D offers more performance per dollar, and the Ryzen 7 5800X3D is the more power-efficient chip.
Estimated performance
Estimated average 1080p gaming performance compiled from publicly available benchmark data. Individual games vary.
Specs side by side
| Specification | i9-12900K | Ryzen 7 5800X3D |
|---|---|---|
| Family | Alder Lake | Zen 3 (X3D) |
| Socket | LGA1700 | AM4 |
| Release year | 2021 | 2022 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | UHD 770 | None |
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the i9-12900K better than the Ryzen 7 5800X3D?
They perform almost identically (within ~1%). Choose based on price, power consumption and platform rather than raw speed.
How much faster is the i9-12900K than the Ryzen 7 5800X3D?
Roughly 0% on average in gaming workloads. The gap varies by title, resolution and settings.
Which processor is better value?
Comparing launch prices, the Ryzen 7 5800X3D delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.