Ryzen 9 7900X3D
12C/24T · 5.6 GHz · 120 W TDP · AM5 (LGA 1718) · PassMark #254
Ryzen 9 8940HX
16C/32T · 5.3 GHz · 55 W TDP · FL1 · PassMark #256
Dead heat — it comes down to priorities.
In our weighted Specdex score, Ryzen 9 7900X3D lands at 28 and Ryzen 9 8940HX at 28. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Ryzen 9 7900X3D if…
- ✓PassMark CPU Mark of 50,212 — solid multi-thread numbers
- ✓3D V-Cache delivers strong gaming performance
- ✓Current PassMark-tracked street price around $538
Pick Ryzen 9 8940HX if…
- ✓PassMark CPU Mark of 50,179 — solid multi-thread numbers
- ✓Mainstream desktop flagship core count
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
TieSpecdex score per dollar at MSRP
Effectively tied — similar score-per-dollar at MSRP.
Score breakdown
Specs side-by-side
| Spec | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Cores | 12 | ▲ 16 |
| Threads | 24 | ▲ 32 |
| Base clock | 4.4 GHz | 2.4 GHz |
| Boost clock | 5.6 GHz | 5.3 GHz |
| L3 cache | ▲ 128 MB | 64 MB |
| TDP | 120 W | 55 W |
| Socket | AM5 (LGA 1718) | FL1 |
| Class | Desktop | Desktop, Laptop |
| PassMark rank | #254 of 5,901 | #256 of 5,901 |
| PassMark CPU Mark | ▲ 50,212 | 50,179 |
Ryzen 9 7900X3D
- +PassMark CPU Mark of 50,212 — solid multi-thread numbers
- +3D V-Cache delivers strong gaming performance
- +Current PassMark-tracked street price around $538
- −Higher price than non-X3D sibling at the same core count
- −Newer-generation parts pull ahead in current rankings
Ryzen 9 8940HX
- +PassMark CPU Mark of 50,179 — solid multi-thread numbers
- +Mainstream desktop flagship core count
- −Requires recent-generation motherboard and DDR5 memory
- −Newer-generation parts pull ahead in current rankings
FAQ: Ryzen 9 7900X3D vs Ryzen 9 8940HX
Which is better, Ryzen 9 7900X3D or Ryzen 9 8940HX? +
Both score 28 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Ryzen 9 7900X3D worth the price? +
At $538, Ryzen 9 7900X3D delivers a Specdex score of 28 — strongest in passmark.
Is Ryzen 9 8940HX worth the price? +
At $549, Ryzen 9 8940HX delivers a Specdex score of 28 — strongest in passmark.
Does Ryzen 9 7900X3D or Ryzen 9 8940HX 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.