Intel Core Ultra 5 345K
Panther Lake · 14C · 5.5 GHz
Ryzen 9 7900X
Zen 4 · 12C/24T · 170 W · AM5
Ryzen 9 7900X takes it — here’s why.
In our weighted Specdex score, Intel Core Ultra 5 345K lands at 84 and Ryzen 9 7900X at 90. That puts Ryzen 9 7900X ahead by 6 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 7900X if…
- ✓AM4/AM5 longevity
- ✓Multi-thread value
- ✓Unlocked multipliers
Winner by scenario
Derived from the sub-score breakdown · not a separate testGaming
TieFrame-rate-bound workloads — favours cache and single-thread speed
Effectively tied — neither pulls a 2-point weighted lead.
Creators & productivity
Ryzen 9 7900XRendering, compilation, heavy multitasking — favours core count
Ryzen 9 7900X leads on multi (90 vs 84).
Power efficiency
Intel Core Ultra 5 345KPerformance per watt — thermals, PSU headroom, electricity cost
Intel Core Ultra 5 345K leads on efficiency (86 vs 80).
Value for money
Intel Core Ultra 5 345KSpecdex score per dollar at MSRP
Intel Core Ultra 5 345K more score per dollar ($329 vs $549).
Score breakdown
Specs side-by-side
| Spec | Intel Core Ultra 5 345K | Ryzen 9 7900X |
|---|---|---|
| Architecture | Panther Lake | Zen 4 |
| Cores | ▲ 14 | 12 |
| Socket | LGA1851 | AM5 |
| Release year | 2025 | 2022 |
| Threads | — | 24 |
| TDP | — | 170 W |
Intel Core Ultra 5 345K
- +Latest generation silicon
- +Improved perf-per-watt
- +Full modern feature set
- −Premium pricing
- −Requires up-to-date platform
- −Initial stock scarcity likely
Ryzen 9 7900X
- +AM4/AM5 longevity
- +Multi-thread value
- +Unlocked multipliers
- −DDR5 required on AM5
- −iGPU optional
- −X3D variants better for gaming
FAQ: Intel Core Ultra 5 345K vs Ryzen 9 7900X
Which is better, Intel Core Ultra 5 345K or Ryzen 9 7900X? +
Ryzen 9 7900X scores 90 on our weighted rubric — ahead by 6. 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 7900X worth the price? +
At $549, Ryzen 9 7900X delivers a Specdex score of 90 — strongest in multi.
Does Intel Core Ultra 5 345K or Ryzen 9 7900X 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.
Which is better for creator and productivity work, Intel Core Ultra 5 345K or Ryzen 9 7900X? +
Ryzen 9 7900X — leads on multi (90 vs 84). Rendering, compilation, heavy multitasking — favours core count.
Which is better for power efficiency, Intel Core Ultra 5 345K or Ryzen 9 7900X? +
Intel Core Ultra 5 345K — leads on efficiency (86 vs 80). Performance per watt — thermals, PSU headroom, electricity cost.