Core i5-11600K
Rocket Lake · 6C/12T · 125 W · LGA1200
Core i9-9900K
Coffee Lake Refresh · 8C/16T · 95 W · LGA1151
Core i5-11600K takes it — here’s why.
In our weighted Specdex score, Core i5-11600K lands at 70 and Core i9-9900K at 68. That puts Core i5-11600K ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Core i5-11600K if…
- ✓Strong per-core performance
- ✓Hybrid P/E cores (12th gen+)
- ✓Wide platform availability
Pick Core i9-9900K if…
- ✓Strong per-core performance
- ✓Hybrid P/E cores (12th gen+)
- ✓Wide platform availability
Winner by scenario
Derived from the sub-score breakdown · not a separate testGaming
Core i5-11600KFrame-rate-bound workloads — favours cache and single-thread speed
Core i5-11600K leads on gaming (69 vs 67).
Creators & productivity
Core i5-11600KRendering, compilation, heavy multitasking — favours core count
Core i5-11600K leads on multi (70 vs 68).
Power efficiency
Core i5-11600KPerformance per watt — thermals, PSU headroom, electricity cost
Core i5-11600K leads on efficiency (78 vs 74).
Value for money
Core i5-11600KSpecdex score per dollar at MSRP
Core i5-11600K more score per dollar ($269 vs $488).
Score breakdown
Specs side-by-side
| Spec | Core i5-11600K | Core i9-9900K |
|---|---|---|
| Architecture | Rocket Lake | Coffee Lake Refresh |
| Cores | 6 | ▲ 8 |
| Threads | 12 | ▲ 16 |
| TDP | 125 W | 95 W |
| Socket | LGA1200 | LGA1151 |
| Release year | 2021 | 2018 |
Core i5-11600K
- +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
Core i9-9900K
- +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
FAQ: Core i5-11600K vs Core i9-9900K
Which is better, Core i5-11600K or Core i9-9900K? +
Core i5-11600K scores 70 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Core i5-11600K worth the price? +
At $269, Core i5-11600K delivers a Specdex score of 70 — strongest in efficiency.
Is Core i9-9900K worth the price? +
At $488, Core i9-9900K delivers a Specdex score of 68 — strongest in efficiency.
Does Core i5-11600K or Core i9-9900K 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 i5-11600K or Core i9-9900K? +
Core i5-11600K — leads on gaming (69 vs 67). Frame-rate-bound workloads — favours cache and single-thread speed.
Which is better for creator and productivity work, Core i5-11600K or Core i9-9900K? +
Core i5-11600K — leads on multi (70 vs 68). Rendering, compilation, heavy multitasking — favours core count.