The Noctua NH-L9i-17xx wins in 2 out of 3 comparable specs. Its biggest advantage is MSRP (59% better).
NH-D15 G2 wins in 1 spec (TDP Rating: 362% better).
Recommendation
Choose NH-L9i-17xx if you want the best overall performance — especially msrp.
Choose NH-D15 G2 if tdp rating matters more to you.
| Spec | NoctuaNH-D15 G2 | NoctuaNH-L9i-17xx |
|---|---|---|
| Design | ||
| Type | Air Tower | Low Profile |
| Height | 168 mm | 37 mm |
| Performance | ||
| TDP Rating | 300W+362% | 65W |
| Fans | 2 | 1 |
| Fan Size | 140 mm | 92 mm |
| Acoustics | ||
| Noise Level | 24.6 dB(A) | 23.6 dB(A)−4% |
| Fan RPM | 300 - 1500 | 600 - 2500 |
| Compatibility | ||
| Sockets | LGA1851, LGA1700, AM5, AM4 | LGA1851, LGA1700 |
| Price | ||
| MSRP | $110 | $45−59% |
| Release Date | Jun 2024 | Nov 2021 |
