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Mother Board Fan Header vs PSU Molex

post #1 of 7
Thread Starter 
Due to Folding with my system when not gaming I run my fans at full speed all the time.
4 fans are connected to the mother board fan headers and 2 are connected to the power supply via molex (due to no more fan headers)
Would it better on my mother board to connect all the fans directly to the psu and does it cause any problems to the board?

Edit: all fans are Noctua.
Edited by jlhawn - 10/1/16 at 2:01pm
Old X58
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i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
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Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
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Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
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EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
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Old X58
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CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
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Custom sleeved psu cables 
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post #2 of 7
It doesn't matter. The PSU has to power then no matter where they are.
My System
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CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

It doesn't matter. The PSU has to power then no matter where they are.

Great, Thank you.
I wasn't sure if pulling power through the mother boards circuit could cause more heat
to the board or shorten it's life, although I have had it this way since 2010.
Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
  hide details  
Reply
Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
  hide details  
Reply
post #4 of 7
Quote:
Originally Posted by jlhawn View Post

Quote:
Originally Posted by billbartuska View Post

It doesn't matter. The PSU has to power then no matter where they are.

Great, Thank you.
I wasn't sure if pulling power through the mother boards circuit could cause more heat
to the board or shorten it's life.
Well actually the board will run hotter and won't last as long.
Maybe 0.001°c hotter and only last 29 years and 11 months instead of 30 years!

When I build an overclocker I use the best PSU I can afford (Gold, 1000 watts?) to power only the motherboard and run everything else off of another PSU. I want stable power for the CPU.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
post #5 of 7
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

Well actually the board will run hotter and won't last as long.
Maybe 0.001°c hotter and only last 29 years and 11 months instead of 30 years!

When I build an overclocker I use the best PSU I can afford (Gold, 1000 watts?) to power only the motherboard and run everything else off of another PSU. I want stable power for the CPU.


Well then the board should out live me. biggrin.gif
Thanks again for your help. smile.gif
Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
  hide details  
Reply
Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
  hide details  
Reply
post #6 of 7
Quote:
Originally Posted by billbartuska View Post

Well actually the board will run hotter and won't last as long.
Maybe 0.001°c hotter and only last 29 years and 11 months instead of 30 years!

When I build an overclocker I use the best PSU I can afford (Gold, 1000 watts?) to power only the motherboard and run everything else off of another PSU. I want stable power for the CPU.


Having a Gold rating has absolutely nothing to do with the actual quality of a power supply. That fallacy has bee beaten to death. Running two power supplies just because you are overclocking is absurd.
post #7 of 7
Quote:
Originally Posted by chrisjames61 View Post

Quote:
Originally Posted by billbartuska View Post

Well actually the board will run hotter and won't last as long.
Maybe 0.001°c hotter and only last 29 years and 11 months instead of 30 years!

When I build an overclocker I use the best PSU I can afford (Gold, 1000 watts?) to power only the motherboard and run everything else off of another PSU. I want stable power for the CPU.


Having a Gold rating has absolutely nothing to do with the actual quality of a power supply. That fallacy has bee beaten to death. Running two power supplies just because you are overclocking is absurd.
That, I'll agree with. I actually read test reports and pay particular attention to current ripple. Generally the more powerful and expensive (gold rated? ) the PSU is the better it will test. As for dual PSUs being absurd, why do you think that to be the case?
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
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