You can read SPCR's review of the S-Flex fans and the stock Scythe fan
A comparison from a (once?) well known board member.Felger Carbon wrote:The Ninja-Plus fan is the Scythe model 62027, AD1212DS-A73GL(6TCL3). At 1028RPM, it is exactly as loud and sounds exactly the same as the Scythe S-Flex E.
These are a few years old, but were in excellent condition when I used them last. And they're whisper quiet at full speed.
$15 shipped (for all four, us48)
H E A T W A R E
Heatware is down again, so here's a text only web copy