Core i9-14900K + RX 7800 XT: bottleneck check
GPU-limited at 1440p. GPU-bound (normal).
The RX 7800 XT is the part working hardest at 1440p, which is what you want. The Core i9-14900K keeps about 22% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 15% | balanced |
| 1440p | GPU | 22% | GPU-bound (normal) |
| 4K | GPU | 39% | GPU-bound (normal) |
The RX 7800 XT is the limiting part at every resolution, which is the healthy direction, and the gap is small enough that neither part is wasted. Upgrade the GPU first when you want more frames.
Specifications
| Cores / threads | 24 / 32 |
|---|---|
| Max boost | 6.0 GHz |
| Socket | LGA1700 |
| Maximum turbo power (MTP) | 253 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK |
| Released | 2023 |
| Gaming index | 87 / 100 |
| Multi-core index | 95 / 100 |
| VRAM | 16 GB |
|---|---|
| Board power | 263 W |
| Released | 2023 |
| 1080p index | 51.7 / 100 |
| 1440p index | 46 / 100 |
| 4K index | 40.9 / 100 |
Power supply
The RX 7800 XT measured 250 W average while gaming (318 W highest 20 ms spike, TechPowerUp). With the Core i9-14900K at its maximum turbo power of 253 W and about 75 W for the rest of the system, the sustained load is about 578 W. A 750 W unit is the safe choice. Details on the RX 7800 XT PSU page or try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck
LGA1700Cards that use the Core i9-14900K fully
Best CPU for the RX 7800 XT Best GPU for the Core i9-14900K RX 7800 XT 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.