Core i5-11400F + GTX 1080 Ti: bottleneck check
Balanced at 1440p.
Well matched at 1440p. The GTX 1080 Ti is the slightly busier part, by about 4%.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 6% | balanced |
| 1440p | GPU | 4% | balanced |
| 4K | GPU | 26% | GPU-bound (normal) |
This is the classic pattern: at 1080p the Core i5-11400F is the limit (6%), while at 4K the GTX 1080 Ti takes over (26% GPU-limited). If you play at 1080p on a high-refresh monitor, a faster CPU is the upgrade that matters; at 1440p or 4K this pair is already well matched.
Specifications
| Cores / threads | 6 / 12 |
|---|---|
| Max boost | 4.4 GHz |
| Socket | LGA1200 |
| TDP | 65 W manufacturer-published TDP — sustained turbo can be higher · Intel ARK |
| Released | 2021 |
| Gaming index | 56 / 100 |
| Multi-core index | 42 / 100 |
| VRAM | 11 GB |
|---|---|
| Board power | 250 W |
| Released | 2017 |
| 1080p index | 28.7 / 100 |
| 1440p index | 23 / 100 |
| 4K index | 18.4 / 100 |
Power supply
The GTX 1080 Ti measured 231 W average while gaming (267 W peak, TechPowerUp). With the Core i5-11400F at its TDP of 65 W and about 75 W for the rest of the system, the sustained load is about 371 W. A 650 W unit is the safe choice. Details on the GTX 1080 Ti PSU page or try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck
LGA1200Best CPU for the GTX 1080 Ti Best GPU for the Core i5-11400F GTX 1080 Ti PSU requirements
Same CPU, other cards
AllSame card, other CPUs
AllIndexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.