©ASUSTEK COMPUTER INC. ALL RIGHTS RESERVED.

snaps11 · ‎04-14-2015

Just installed a Thermaltake Water 3.0 Ultimate. I have the 3 fans plugged in with the supplied 3>1 cable into the CPU_OPT port and the pump plugged into the CPU fan port. For some reason the RPM does not register properly in AI Suite 3. CPU fan registers as 1875 RPM and CPU_OPT registers as 1012 RPM. I cannot adjust fan curves at all. If I select Full Speed I can hear the fans ramp up but the rpm listed does not change at all. Any thoughts?
--------------------------------------------------------------------------------------------------------------------------------------------------------------------

Update: I have the fan RPM registering properly as I am no longer using the B fan control ports. However I do have a new problem. The 3 fans I have plugged into the cpu fan port do not adjust to my profile on boot. I have them set for 600 rpm, on boot they run at 1000. The only way to get them to fit my profile is if I switch to full power then reload my custom profile. What would be the best fix for this? Thanks for the responses!

Praz · ‎04-14-2015

Hello

CPU_OPT is controlled by the settings of CPU_FAN.

Chino · ‎04-14-2015

Switch them around. Put the fans on the CPU_FAN header and the pump on the CPU_OPT header or CHA_FAN header.

frickinoob · ‎04-14-2015

whoa, you want your pump variable? Be careful. Usually use an adapter to hook the pump into always on power, use the fan ports for variable airflow.
If you want the pump variable, use a separate port other than cpu or cpu_opt.
I use an adapter to give constant power to my pump, and a lead for rpm to an available port to monitor rpm.

kkn · ‎04-14-2015

multi fans on 1 port will never give you the right rpm.

Deon017 · ‎04-14-2015

kkn wrote:
multi fans on 1 port will never give you the right rpm.

I agree with this and with frickinoob - don't need to control your pump, just connect it directly to power - just the fans if you want

skypine27 · ‎04-15-2015

I use an AIO too, though not your model. I agree with others here, never let the pump RPM be variable. However, on a lot of AIOs, they aren't variable. The pump "plug" is often a 3 pin plug for RPM monitoring only, not RPM control. I don't even bother to plug in my 3 pin for the pump, as I don't care to monitor what RPM its running at (it runs max RPM 24/7)

*CPU: Intel 10980XE @ 5.0 ghz (by Core usage) w/ EK monoblock
*Mobo: Asus Rampage VIE
*RAM: 64GB DDR4 3000 G.Skill TridentZ
*Graphics: Gigabite 3090 Waterforce
*Monitor: Dell Alienware AW3418DW @ 120hz
*Storage OS: Samsung SM970 Pro (2TB) Windows 10
*Storage Games Internal: 4TB 850 EVO RAID0
*Storage Extermal: 48TB Raid0 (External USB 3.1 Box)
*Case/PSU: Thermaltake V71 TG/RGB + 3 Rads (120mm, 360mm, 420mm) + Corsair AX1200i PSU

GoNz0- · ‎04-15-2015

I use PWM fans and pumps, a 3 into 1 should not feed the tach signal to the other fans to allow one to be monitored, if it feeds a tach signal to the other 2 then those wires need removing. as for pumps, they need to be PWM as well to take full advantage of the fan headers. Asus do not allow good control over DC voltage, infact shockingly poor as it starts at 60% for some reason.

I run 3 pwm fans off the cpu header and the pump off the cpu_opt with no issues at all due to them being pwm.

I run the same off the GTX980 Strix using a 5 pin to 2x pwm cable as well.

not monitoring a pump RPM signal is silly imo as a failure should be easily spotted.

Also not all of us want a pump running flat out, my PC is virtually silent at idle, the pump running flat out is quite loud in a quiet room.

The latest modded R5E BIOS can be found at win-raid by clicking this sig

snaps11 · ‎04-18-2015

Bump, see original post.

Fan Speed - Watercooling