Scythe KAMA-FLEX 135mm x 25mm Fan - 800 RPM w/ S-FDB Bearing (140mm Mount) (SA1325FDB12L)
, it moves a lot of air at 800rpm, way more than i seen any PSU fan move, but this is at 12V full. Just wondering why you looking for another version? you want more rpms? One thing about the scythe is that its 135mm but the frame is a 140mm or at least it matches perfectly on my lian li Q08 build (but i used rubber screws). If you can fit the KAMA FLEX, you should be able to fit any other 140mm fan, like Noiseblockers PK series
, i own 1x PK1 (on my servemi build) and to me its my favorite 140mm fan atm (running at 12V), i also own 2x PK3 on my notebook cooler, Coolermaster SF19, but by no means they are quiet at 12V, but plays good as the cooler has its own fan controller... but i wouldn't recommend it to run at 12V if you want a quiet setup, but for sure moves a lot air. Personally i think price wise the Kama Flex seems like the best option, as long as you can fit it, it should move more air than a PSU would need, but really depends on how you planning on running it.
Edit: Just in case you still want a higher rpm Kama flex 135mm, check Scythe Kama Flex 135mm Fan SA1325FDB12M (1200 rpm)