You could also check the fourdot fans on amazon, much cheaper and very good with more cfm and 3k rpm.Toughfan 12s are near-perfect clones of the NF-A12x25. Looks like they had/have some QC issues so you're rolling the dice a bit when you get them. But considering you can't even find Arctic P12s at a reasonable price anymore, and these are two really performant and quiet fans for 2.5k, I went for it.