Intel
Intel Core Ultra 5 345K
Panther Lake · 14C · 5.5 GHz
84
/ 100
From $329
VS
Ryzen 9 9950X3D wins by 12
AMD
Ryzen 9 9950X3D
Zen 5 · 16C/32T · 3D V-Cache · AM5
96
/ 100
From $699
Specdex verdict
Ryzen 9 9950X3D takes it — here’s why.
In our weighted Specdex score, Intel Core Ultra 5 345K lands at 84 and Ryzen 9 9950X3D at 96. That puts Ryzen 9 9950X3D ahead by 12 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Intel Core Ultra 5 345K if…
- ✓Latest generation silicon
- ✓Improved perf-per-watt
- ✓Full modern feature set
Pick Ryzen 9 9950X3D if…
- ✓16C productivity + 3D V-Cache on gaming CCD
- ✓Lower power than Intel 14900K
- ✓Overclockable unlike prior X3D parts
Intel Core Ultra 5 345K 84
vs 96 Ryzen 9 9950X3D
Score breakdown
Intel Core Ultra 5 345K
84 single 86
multi 84
gaming 85
efficiency 86
Ryzen 9 9950X3D
96 single 96
multi 98
gaming 99
efficiency 88
Specs side-by-side
| Spec | Intel Core Ultra 5 345K | Ryzen 9 9950X3D |
|---|---|---|
| Architecture | Panther Lake | — |
| Cores | 14 | ▲ 16 (16C/32T; only one CCD carries 3D V-Cache) |
| Socket | LGA1851 | AM5 |
| Release year | 2025 | — |
| Threads | — | 32 |
| Base clock | — | 4.3 GHz |
| Boost clock | — | 5.7 GHz |
| L3 cache | — | 128 MB (96 MB stacked + 32 MB) |
| TDP | — | 170 W |
| Process | — | TSMC 4 nm |
| iGPU | — | Radeon Graphics (RDNA 2, 2 CUs) |
| Memory | — | DDR5-5600 |
Intel Core Ultra 5 345K
Pros
- +Latest generation silicon
- +Improved perf-per-watt
- +Full modern feature set
Cons
- −Premium pricing
- −Requires up-to-date platform
- −Initial stock scarcity likely
Ryzen 9 9950X3D
Pros
- +16C productivity + 3D V-Cache on gaming CCD
- +Lower power than Intel 14900K
- +Overclockable unlike prior X3D parts
Cons
- −$699 premium pricing
- −Only one CCD has the stacked cache
- −X870E motherboard recommended
FAQ: Intel Core Ultra 5 345K vs Ryzen 9 9950X3D
Which is better, Intel Core Ultra 5 345K or Ryzen 9 9950X3D? +
Ryzen 9 9950X3D scores 96 on our weighted rubric — ahead by 12. Your best pick depends on the sub-scores above.
Is Intel Core Ultra 5 345K worth the price? +
At $329, Intel Core Ultra 5 345K delivers a Specdex score of 84 — strongest in single.
Is Ryzen 9 9950X3D worth the price? +
At $699, Ryzen 9 9950X3D delivers a Specdex score of 96 — strongest in gaming.
Does Intel Core Ultra 5 345K or Ryzen 9 9950X3D last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.