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You might want to review Noctua's performance charts before deciding on which line of fans to buy. According to their own research the A series outperforms all of their other fans for most uses in a PC, including a radiator setup. The pressure optimized fans are only better in a really restricted system. The radiator performance is right at the peak of the superiority of the A12 and you have essentially that setup but with some obstacles between the radiator and the fans. Do those obstacles add enough restriction to move the graph to the point where the pressure optimized fans win?[URL unfurl="true"]https://noctua.at/en/nf-a12x25-performance-comparison-to-nf-f12-and-nf-s12a[/URL]
You might want to review Noctua's performance charts before deciding on which line of fans to buy. According to their own research the A series outperforms all of their other fans for most uses in a PC, including a radiator setup. The pressure optimized fans are only better in a really restricted system. The radiator performance is right at the peak of the superiority of the A12 and you have essentially that setup but with some obstacles between the radiator and the fans. Do those obstacles add enough restriction to move the graph to the point where the pressure optimized fans win?
[URL unfurl="true"]https://noctua.at/en/nf-a12x25-performance-comparison-to-nf-f12-and-nf-s12a[/URL]