ASRock Forums : X399 Taichi: Which CPU Fan Header https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 09 May 2026 13:49:25 +0000 Wed, 18 Apr 2018 16:41:18 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=8425 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[X399 Taichi: Which CPU Fan Header : that 4th pin is for pwm signal,...]]> https://forum.asrock.com/forum_posts.asp?TID=8425&PID=49970&title=x399-taichi-which-cpu-fan-header#49970 Author: kerberos_20
Subject: 8425
Posted: 18 Apr 2018 at 4:41pm

that 4th pin is for pwm signal, if ure on 3pin, then u can use only DC mode
]]> Wed, 18 Apr 2018 16:41:18 +0000 https://forum.asrock.com/forum_posts.asp?TID=8425&PID=49970&title=x399-taichi-which-cpu-fan-header#49970 <![CDATA[X399 Taichi: Which CPU Fan Header : I&#039;m using the same header...]]> https://forum.asrock.com/forum_posts.asp?TID=8425&PID=49956&title=x399-taichi-which-cpu-fan-header#49956 Author: scythefwd
Subject: 8425
Posted: 18 Apr 2018 at 8:48am

I'm using the same header for my enermax cooler.. (which I'd recommend over the nzxt , though if your temps are good.. rock on good sir, rock on).


]]> Wed, 18 Apr 2018 08:48:50 +0000 https://forum.asrock.com/forum_posts.asp?TID=8425&PID=49956&title=x399-taichi-which-cpu-fan-header#49956 <![CDATA[X399 Taichi: Which CPU Fan Header : I have the X399 Taichi with an...]]> https://forum.asrock.com/forum_posts.asp?TID=8425&PID=49942&title=x399-taichi-which-cpu-fan-header#49942 Author: mjiggidy
Subject: 8425
Posted: 18 Apr 2018 at 2:49am

I have the X399 Taichi with an NZXT X62 AIO liquid cooler.  The fan connector for the cooler is three pin.

On the motherboard, I have CPU_FAN1 or CPU_OPT_W_PUMP headers (both 4-pin).

Currently, I've connected the fans to the first three pins of the CPU_OPT_W_PUMP header.  Is that the thing to do here?  Since my AIO fans don't use the 4th control pin, is there any advantage in using this header over CPU_FAN1?

In the BIOS, I changed the setting for that header from CPU_OPT to W_PUMP and I heard a speed difference in the fans, but no noticeable difference otherwise.

I feel weird not using that CPU_FAN1 header and I'm second guessing myself.  Does it even matter?

Thanks.
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