Best GPU for the Core i9-13900K
The Intel Core i9-13900K has a gaming index of 85/100. At 1440p it can fully drive graphics cards up to a performance index of about 75; faster cards still work, but part of what you pay for sits idle in CPU-heavy games. At 4K the ceiling rises to about 110, at 1080p it falls to about 65.
Best-matched cards (1440p)
| # | GPU | VRAM | 1080p | 1440p | 4K | PSU |
|---|---|---|---|---|---|---|
| 1 | RTX 5080 | 16 GB | CPU 5% | GPU 2% | GPU 22% | 1000 W |
| 2 | RTX 4090 | 24 GB | CPU 11% | CPU 5% | GPU 16% | 1200 W |
| 3 | RX 7900 XTX | 24 GB | CPU 1% | GPU 6% | GPU 26% | 1000 W |
| 4 | RTX 4080 Super | 16 GB | GPU 0% | GPU 8% | GPU 27% | 1000 W |
| 5 | RTX 5070 Ti | 16 GB | GPU 2% | GPU 9% | GPU 28% | 850 W |
| 6 | RTX 4080 | 16 GB | GPU 2% | GPU 9% | GPU 28% | 1000 W |
| 7 | RX 9070 XT | 16 GB | GPU 3% | GPU 11% | GPU 29% | 1000 W |
| 8 | RX 7900 XT | 20 GB | GPU 5% | GPU 13% | GPU 31% | 1000 W |
| 9 | RTX 4070 Ti Super | 16 GB | GPU 6% | GPU 13% | GPU 32% | 850 W |
| 10 | RX 9070 | 16 GB | GPU 8% | GPU 16% | GPU 34% | 750 W |
Cards this CPU would hold back
RTX 5090 (15% CPU bottleneck at 1440p). Buy one of these only if you game at 4K or plan a CPU upgrade soon.
Cards that would waste this CPU
GTX 1650, RTX 3050, GTX 1660 Super leave more than 40% of the Core i9-13900K unused at 1440p — fine for esports titles at high refresh, wasteful otherwise.