X670E Steel Legend Fan headers

Hello one and all. Question about fan headers.

Does it mater which fan header I plug my cooler master ML360 Illusion water pump into? Thee are two connectors in question - one for the three fans on the radiator and one for the water pump itself.

Also, in the motherboard manual on page 43, it references the CPU_FAN1, calling it a quiet fan. What is this? Can I plug any fan into it, including the above mentioned radiator and/or water pump?

If anyone has set up this motherboard with a water cooler, which fan headers would you recommend plugging things into?

My gut tells me all the fan headers do the same thing.

Thanks,
Nelson

Hello and thanks for your reply!

The motherboard you're referring to is the X670E Steel Legend from Asrock? That's the one I am talking about.

You referenced a header market "aio/chassis". I've looked on the board and in the manual and don't see it, which is why I asked which MB you were referencing.

Your comments about fan header 1 and 2 make sense.

I have a total of 6 fan headers. 1 and 2 referenced above and the other 4 all indicated in the manual as CHA_FAN1/WP, CHA_FAN2/WP AND SO ON.

Thanks,
Nelson

Great, thanks.
So CPU_FAN1 can be the splitter cable for the three fans on the radiator.
CPU_FAN2 can be for the water pump.

All other fan connectors can be used for the 3 chassis fans that came with the case I'm using, a Fractal meshify 2.

I've been building my own PCs since 1990 - used to go to the computer shows at the county center in White Plains NY and other cities near me in the tri-state area. It was a rare day when all the parts I bought would play nice with each other. But the case to get - and back then, really, the only name brand case, was INWIN.

I always held my breath when I had all the components assembled and finally worked up the nerve to push the power switch! And this was before zero insertion sockets for the CPUs...you had to carefully line up the cpu pins and gently, ever so gently, push it into the socket (removing a cpu was an act of god - flat blade tiny screwdriver, gently pushing under the edges, working it out ever so slowly not to bend anything..... Ram also had pins on them. Same game, gently push, don't bend anything. Thermal grease for a cpu back then? What's that? The tiny fans on the 286s/286s war clipped over the sides of the cpu - they really didn't make much contact....

I digress

Thanks for the help!

- N

- Nelson

Thanks for that info. My case Fractal Meshify 2 does have a pwm cable with a sata power connecter, and one 4 pin header plug. I don't have a splitter for all 3 case fans AND the water cooler radiator (with it's three pins which are on a splitter, ie, 3 into 1) - but I suppose I can plug the radiator splitter into that PWM cable....actually, looking at the instructions for the case, all my fans can plug into what they call a fan hub, which is a combo of 3 and 4 pin headers. There is one 4 pin connecter specially to run a cable to a 4 pin connecter on the board. That 4 pin connecter should be, as you earlier mentioned, cup fan header 1 or 2? Here's a link to a pdf of the case user guide - take a look at page 18 and tell me what you think. Thanks. https://www.fractal-design.com/app/uploads/2020/10/Meshify-2-manual-v.1.2-2020-05-18.pdf

Well, put it all together and turned it on. had issues with the motherboard no liking DP cables, but that's another story I posted elsewhere.

I have the pump connected to CPU_fan2. In bios, set that connector up as "w_pump", "PWM mode" and "fullspeed.

My cpu seems to be running hot and when I touch the fan, I get no tactile feedback. Bios reports CPU at 163F. CPU is a ryzen 9 7900X. Or is that normal temp for that CPU at idle? Thanks.