Cooler comparison

Noctua NH-L9a-AM4 vs Noctua NH-L9i-17xx

Across the 100 processors either cooler can mount, the Noctua NH-L9a-AM4 cools better or equally on 51 of them, at $49.95 versus $49.95 on Amazon. Their sustained ratings are identical, so the difference comes down to height, RAM clearance and price.

Reviewed by Farrukh Sufyan SarwarHow we estimate temperaturesPrices verified Model v1.2 · data updated

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01

Excellent verdicts by socket

Number of processors per socket each cooler keeps in the Excellent band
SocketCPUsNH-L9a-AM4NH-L9i-17xx
AM5250 / 25no bracket
AM4260 / 26no bracket
LGA18518no bracket0 / 8
LGA170041no bracket0 / 41
LGA12000no bracketno bracket
02

Head to head on popular processors

Estimated full-load temperature and verdict for each cooler on the highest-power processors
ProcessorBoostNH-L9a-AM4NH-L9i-17xx
Core i7-13700K253 W100 °CIncompatible socket100 °CThrottling risk
Core i9-13900K253 W100 °CIncompatible socket100 °CThrottling risk
Core i9-14900KF253 W100 °CIncompatible socket100 °CThrottling risk
Core i9-12900K241 W100 °CIncompatible socket100 °CThrottling risk
Ryzen 9 7950X230 W95 °CThrottling risk95 °CIncompatible socket
Core i7-13700219 W100 °CIncompatible socket100 °CThrottling risk
Core i7-12700K190 W100 °CIncompatible socket100 °CThrottling risk
Core i5-13600K181 W100 °CIncompatible socket100 °CThrottling risk
Core i7-12700180 W100 °CIncompatible socket100 °CThrottling risk
Ryzen 9 7950X3D162 W89 °CThrottling risk89 °CIncompatible socket
Core Ultra 5 245KF159 W100 °CIncompatible socket100 °CThrottling risk
Core i5-12600K150 W100 °CIncompatible socket100 °CThrottling risk
Core i5-14400148 W100 °CIncompatible socket100 °CThrottling risk
Ryzen 7 3800X142 W95 °CThrottling risk95 °CIncompatible socket
Ryzen 7 5800X3D142 W90 °CThrottling risk90 °CIncompatible socket
Ryzen 9 3950X142 W95 °CThrottling risk95 °CIncompatible socket