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post #2751 of 20731
It should be ok to run the cpu block/pump off the cpu header.

The fans should be hooked up to PWM 4 pin connector though
Quote:
Originally Posted by Avonosac View Post

You are voltage regulating those fans. This is a bad idea, you will burn them out. It is better for you to sell those fans, and get some regular voltage controlled fans and run them off of the fan controller.

My older EVGA FTW3 x58 mobo has PWM
Quote:
Originally Posted by Thrasher1016 View Post




Ok, someone else gets to officially answer this, but it's got to have one..... Has someone actually heard of a modern 1156 / 1155 / 2011 board without that capability?

I'm not cracking wise, it's a legitimate question, and if not, would this fella not just plug it in like suggested into the primary CPU header and run as directed?

[If it is there and labelled badly, or something equally stupid, is what I mean...]



Thanks - T
post #2752 of 20731
Quote:
Originally Posted by Thrasher1016 View Post




Ok, someone else gets to officially answer this, but it's got to have one..... Has someone actually heard of a modern 1156 / 1155 / 2011 board without that capability?

I'm not cracking wise, it's a legitimate question, and if not, would this fella not just plug it in like suggested into the primary CPU header and run as directed?

[If it is there and labelled badly, or something equally stupid, is what I mean...]



Thanks - T

my 790x AM2+ board has PWM, it just needs to be forced so i would assume halfway decent motherboards of the same vintage and newer support PWM.

I suggest people who are unsure to check BIOS settings to confirm.
Quote:
Originally Posted by bvsbutthd101 View Post

It should be ok to run the cpu block/pump off the cpu header.

it should be OK, but i think until its known, run everything h220 related from the splitter including the pump to be on the safe side. My first pump seemed to run ok from the CPU header and then failed for reasons unknown (not debris, being PWM modulated). I didnt want to take chances so the new one is splitter powered. This will prevent accidental voltage changes to the pump.
Edited by ez12a - 5/15/13 at 12:06pm
 
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post #2753 of 20731
Quote:
Originally Posted by ez12a View Post

my 790x AM2+ board has PWM, it just needs to be forced so i would assume halfway decent motherboards of the same vintage and newer support PWM.

I suggest people who are unsure to check BIOS settings to confirm.

See, that's my thing; I'm no software guy (I like hardware, hence this building hobby), but always checking BIOS before assuming things is a good way to start....
And with all the UEFI BIOSes (BIOSi?) these days, it's got to be easier than ever!!!




Thanks - T
post #2754 of 20731
Thread Starter 
My recommendation is to always always always hook the pump into the red socket on the splitter, the splitter to the CPU fan header, and the molex to your power supply. This way, regardless of if the header is PWM or not, your pump will receive the full 12v undetoured. If the header is voltage, the pump won't change from 100%. But if the header is PWM, you can adjust it accordingly. This way you cannot damage the pump from undervolting. It may be undesireable to hear your pump at 3000 rpm if pwm is not supported, but I guarantee it is even less desireable to kill your pump by forgoing the splitter.
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post #2755 of 20731
I ordered 2 helix 120mm non PWM fans yesterday. I think I'm gonna return them and order the PWM versions. I wasn't using the PWM splitter until I was told it's bad to use PWM fans on a fan controller.



In my bios under "PC Health Status", it gives me the option to use PWM power or DC power.
Quote:
Originally Posted by Thrasher1016 View Post



See, that's my thing; I'm no software guy (I like hardware, hence this building hobby), but always checking BIOS before assuming things is a good way to start....
And with all the UEFI BIOSes (BIOSi?) these days, it's got to be easier than ever!!!




Thanks - T

Edited by bvsbutthd101 - 5/15/13 at 12:25pm
post #2756 of 20731
Quote:
Originally Posted by bvsbutthd101 View Post



In my bios under "Power management setup", it gives me the option to use PWM power or DC power.

good to know. What was it set to by default? DC power would mean voltage control, and could factor into maybe a few failures in the thread.
 
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post #2757 of 20731
Quote:
Originally Posted by ez12a View Post

good to know. What was it set to by default? DC power would mean voltage control, and could factor into maybe a few failures in the thread.

I'm pretty sure PWM was set by default.

EDIT: I got that wrong. It's not power management setup, it's under PC Health Status then Smartfan Function
Edited by bvsbutthd101 - 5/15/13 at 12:26pm
post #2758 of 20731
Quote:
Originally Posted by Phelan View Post

My recommendation is to always always always hook the pump into the red socket on the splitter, the splitter to the CPU fan header, and the molex to your power supply. This way, regardless of if the header is PWM or not, your pump will receive the full 12v undetoured. If the header is voltage, the pump won't change from 100%. But if the header is PWM, you can adjust it accordingly. This way you cannot damage the pump from undervolting. It may be undesireable to hear your pump at 3000 rpm if pwm is not supported, but I guarantee it is even less desireable to kill your pump by forgoing the splitter.

Phelan is exactly right. To prevent any issues it's best to use the splitter the way it was designed. Having it connected to the CPU fan header and then connecting the pump to Channel 1 on the splitter is the best way to ensure that the pump is getting the voltage that it requires.
post #2759 of 20731
Not sure others have been following, but Stren just posted up some GPU flow rate sensitivity data on a Titan roundup.

What catches my attention is the very good performance at lower flow rates. I measured the h220 maxing out in flow rate at about 0.6GPM so running two GPU block in parallel could mean the gpu loops would only see 0.3 GPM. I wondered if that is enough.

This seems to indicate yes for actual thermal performance especially with the aquacomputers block:

sXNiFTU.png
    
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post #2760 of 20731
Got my replacement kit yesterday. Installed using the corsair standoffs + thumbscrews made the install go much much easier.

http://imgur.com/L3Am29g
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