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How many amps can the P8P67 Pro handle on its fan headers? - Page 2

post #11 of 17
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Okay, so that means I need to find 2x fans that are 1.0a each (or less), and run them off CHA_FAN1. Will that control the fans (PWM) based off CPU speed? I thought that was for the CPU FAN header only.
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Junkyard
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NAStradamous
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HTPC01
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CPUMotherboardGraphicsRAM
Intel i5 2320 @ 3.1GHz MSI B75MA-E33 HIS HD7970 3GB @ 1050 / 1700, 1.17v Patriot 2x4GB DDR3-1066 
Hard DriveHard DriveOptical DriveCooling
Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
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NZXT 120mm fans strapped to stock 7970 cooler Windows 10 Pro Dell 3007WFP Dell 2007FP 
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post #13 of 17
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Quote:
Originally Posted by pioneerisloud View Post
Okay, so that means I need to find 2x fans that are 1.0a each (or less), and run them off CHA_FAN1. Will that control the fans (PWM) based off CPU speed? I thought that was for the CPU FAN header only.
Just a heads up, i'm not too familiar on how fans are controlled and whatnot. What i say may be incorrect.

If the CHA_FAN1 header controls my fan which isn't PWM, then it should also control a PWM fan since it has the PWM connection.

My fans are being controlled by AI Suite II which allows you to set the fan speed(in %) based on the current CPU temperature. Just remember that BIOS 1704 and 1805 use a different method of measuring the CPU temp. So when you set the fan speed, use the temperature that AI Suite gives you instead of another program(e.g. Real Temp).
Edited by nawon72 - 8/20/11 at 9:54pm
post #14 of 17
Quote:
Originally Posted by nawon72 View Post


Sorry if this is a noob question, but will the CHA_FAN1 header still support 2.4A if i'm using 3pin fans?
I don't think number of pins affects max amperage. All power should be heading to the fan via one pin.

Also, I don't think you should mix PWM and non-PWM fans from one header if you're controlling the PWM fan via PWM. I could see it doing weird things...
post #15 of 17
Thread Starter 
Here are the possible combination of fans i will be using, and their amperage:

CHA_FAN1
-------------------------------------------
1.426A all fans(not CPU related) + exhaust fan + top vrm fan

1.246A all fans(not CPU related) + exhaust fan

1.123A all fans(not CPU related)


CHA_FAN2
-------------------------------------------
0.989A all fans(CPU related)

0.809A no top vrm fan

0.866A no exhaust fan

0.686A no exhaust fan + no top vrm fan


CPU_FAN
-------------------------------------------
0.18A top vrm fan


Please tell me which combinations would be safe to use.
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