Core i9-13900KS
24C/32T · 6.0 GHz · 150 W · PassMark #170
Ryzen 9 9900X
Zen 5 · 12C/24T · 5.6 GHz · AM5
Ryzen 9 9900X takes it — here’s why.
In our weighted Specdex score, Core i9-13900KS lands at 33 and Ryzen 9 9900X at 92. That puts Ryzen 9 9900X ahead by 59 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Core i9-13900KS if…
- ✓PassMark #170 of 5,901 — capable workhorse
- ✓Current PassMark-tracked street price around $521
Pick Ryzen 9 9900X if…
- ✓12 cores at 5.6 GHz boost
- ✓120 W TDP — cooler than 9950X
- ✓AM5 platform longevity
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
Ryzen 9 9900XSpecdex score per dollar at MSRP
Ryzen 9 9900X more score per dollar ($499 vs $521).
Score breakdown
Specs side-by-side
| Spec | Core i9-13900KS | Ryzen 9 9900X |
|---|---|---|
| Cores | ▲ 24 (8P + 16E) | 12 |
| Threads | ▲ 32 | 24 |
| Base clock | 3.2 GHz (P) / 2.4 GHz (E) | 4.4 GHz |
| Boost clock | 6.0 GHz | 5.6 GHz |
| L3 cache | 36 MB | ▲ 64 MB |
| TDP | 150 W base / 253 W max | 120 W |
| Socket | LGA 1700 | AM5 |
| Class | Desktop | — |
| PassMark rank | #170 of 5,901 | — |
| PassMark CPU Mark | 60,485 | — |
| Process | — | TSMC N4X |
| iGPU | — | Radeon Graphics (RDNA 2, 2 CUs) |
| Memory | — | DDR5-5600 dual-channel |
Core i9-13900KS
- +PassMark #170 of 5,901 — capable workhorse
- +Current PassMark-tracked street price around $521
- −Requires recent-generation motherboard and DDR5 memory
- −Newer-generation parts pull ahead in current rankings
Ryzen 9 9900X
- +12 cores at 5.6 GHz boost
- +120 W TDP — cooler than 9950X
- +AM5 platform longevity
- −9950X edges it on multi-thread
- −9800X3D beats it on gaming
- −$499 puts it close to higher-tier
FAQ: Core i9-13900KS vs Ryzen 9 9900X
Which is better, Core i9-13900KS or Ryzen 9 9900X? +
Ryzen 9 9900X scores 92 on our weighted rubric — ahead by 59. Your best pick depends on the sub-scores above.
Is Core i9-13900KS worth the price? +
At $521, Core i9-13900KS delivers a Specdex score of 33 — strongest in passmark.
Is Ryzen 9 9900X worth the price? +
At $499, Ryzen 9 9900X delivers a Specdex score of 92 — strongest in multi.
Does Core i9-13900KS or Ryzen 9 9900X 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 the better value, Core i9-13900KS or Ryzen 9 9900X? +
Ryzen 9 9900X — more score per dollar ($499 vs $521). Specdex score per dollar at MSRP.