I have tried everything, since first power up, if the pump tach is plugged into CPU FAN header, I get a post error saying no fan

The included fans have been working fine for me, very quiet and seems to cool fine.

The included fans have been working fine for me, very quiet and seems to cool fine.

If it wasn't for the cracked fan casing and the 3 Pin power would of definitely rated more stars, like i said would be even better with a RGB cooler fan.

The temperatures are pretty much in line with my cryo C1 cooler ... however that one was modified with a BeQuiet silent 1000 rpm fan

Very, very silent fan and pump; perfectly controls heating via app as well as the RGB lightning

It is important to note that I have read several reviews and all agree this is the quieter fan at full speeds (though keep in mind the h115i fans turn significantly faster at full speed and have a much broader range of speeds overall).BOTTOM LINE: If you don't want to delid your CPU and void the warranty to make it run cooler, and/or you don't mind turning this product so that the logo is not right side up if it obstructs your RAM, then get this product because the noise is a bit easier to deal with at high speeds.

Could use some better quieter fans though.

I'm not sure why I can't get the fan curve to work normally

Unfortunately Corsair's fans sound very much like a hair dryer when they are spinning at high RPM - even after years of usage I still can't tune it out (to add insult to injury, my H80i had a noisy pump that makes grinding noise; always been that way since day 1

The fans are not loud at all and the installation was very good.

Well built, quiet yet powerful fans, and easy install makes this a winner.

The fans could use directional indicators, but not too hard to figure out with a good look.

The fans are dead quiet

The radiator block seems to be standard and the fans as well, so this isn't a negative mark just an FYI to anybody planning to match those two products together.