Core i9-12900K
Alder Lake · 16C/24T · 125 W · LGA1700
Intel Core Ultra 9 395K
Panther Lake · 26C · 6.0 GHz
Intel Core Ultra 9 395K takes it — here’s why.
In our weighted Specdex score, Core i9-12900K lands at 84 and Intel Core Ultra 9 395K at 93. That puts Intel Core Ultra 9 395K ahead by 9 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Core i9-12900K if…
- ✓Strong per-core performance
- ✓Hybrid P/E cores (12th gen+)
- ✓Wide platform availability
Pick Intel Core Ultra 9 395K if…
- ✓Latest generation silicon
- ✓Improved perf-per-watt
- ✓Full modern feature set
Winner by scenario
Derived from the sub-score breakdown · not a separate testGaming
Intel Core Ultra 9 395KFrame-rate-bound workloads — favours cache and single-thread speed
Intel Core Ultra 9 395K leads on gaming (94 vs 83).
Creators & productivity
Intel Core Ultra 9 395KRendering, compilation, heavy multitasking — favours core count
Intel Core Ultra 9 395K leads on multi (93 vs 84).
Power efficiency
Intel Core Ultra 9 395KPerformance per watt — thermals, PSU headroom, electricity cost
Intel Core Ultra 9 395K leads on efficiency (86 vs 78).
Value for money
TieSpecdex score per dollar at MSRP
Effectively tied — similar score-per-dollar at MSRP.
Score breakdown
Specs side-by-side
| Spec | Core i9-12900K | Intel Core Ultra 9 395K |
|---|---|---|
| Architecture | Alder Lake | Panther Lake |
| Cores | 16 | ▲ 26 (8P+16E+2LP) |
| Threads | 24 | ▲ 26 |
| TDP | 125 W | — |
| Socket | LGA1700 | LGA1851 |
| Release year | 2021 | 2025 |
Core i9-12900K
- +Strong per-core performance
- +Hybrid P/E cores (12th gen+)
- +Wide platform availability
- −Power draw on top SKUs
- −Frequent socket changes
- −Arrow Lake gaming regressions
Intel Core Ultra 9 395K
- +Latest generation silicon
- +Improved perf-per-watt
- +Full modern feature set
- −Premium pricing
- −Requires up-to-date platform
- −Initial stock scarcity likely
FAQ: Core i9-12900K vs Intel Core Ultra 9 395K
Which is better, Core i9-12900K or Intel Core Ultra 9 395K? +
Intel Core Ultra 9 395K scores 93 on our weighted rubric — ahead by 9. Your best pick depends on the sub-scores above.
Is Core i9-12900K worth the price? +
At $589, Core i9-12900K delivers a Specdex score of 84 — strongest in single.
Is Intel Core Ultra 9 395K worth the price? +
At $649, Intel Core Ultra 9 395K delivers a Specdex score of 93 — strongest in single.
Does Core i9-12900K or Intel Core Ultra 9 395K 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 gaming, Core i9-12900K or Intel Core Ultra 9 395K? +
Intel Core Ultra 9 395K — leads on gaming (94 vs 83). Frame-rate-bound workloads — favours cache and single-thread speed.
Which is better for creator and productivity work, Core i9-12900K or Intel Core Ultra 9 395K? +
Intel Core Ultra 9 395K — leads on multi (93 vs 84). Rendering, compilation, heavy multitasking — favours core count.