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Just a Quick Question

post #1 of 8
Thread Starter 
I have an antec CP-850, I need to reverse the air flow to accommodate the way that I have my radiators setup. They are all large low flow exhaust radiators, and I need another intake near the bottom of the case, and this is perfect.

The fan wire is too short to reverse the airflow, would simply cutting and capping the wire have effect any effect on my PSU? This would be the easiest way, I could replace the fan without opening my power supply.
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CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
Case
Anetc DF-85 
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Another System
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CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
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Anetc DF-85 
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post #2 of 8
Quote:
Originally Posted by freakman300 View Post
I have an antec CP-850, I need to reverse the air flow to accommodate the way that I have my radiators setup. They are all large low flow exhaust radiators, and I need another intake near the bottom of the case, and this is perfect.

The fan wire is too short to reverse the airflow, would simply cutting and capping the wire have effect any effect on my PSU? This would be the easiest way, I could replace the fan without opening my power supply.
why dont you just flip the fan over.....
you lose a LOT of power from fans by reversing them
post #3 of 8
Thread Starter 
Like I said before the cable is too short, yes I know that it won't cool as effectively, but in this situation having another exhaust fan is out of the question I have 5 120mm exhaust fans, and 2 140mm exhaust fans, it would be better if that weak low flow fan wasn't fighting against them. If the cable was 1cm longer i could flip it but this way I can just use a more powerful fan and provide my psu with more than enough cooling power.

The reason why I have so many exhaust fans is because of my water cooling radiators, its better to have them all flowing in the same way (either all exhaust or all intake), that way Im not recycling warm air from one radiator to another thus diminishing their cooling capacity.
Edited by freakman300 - 7/28/11 at 12:17pm
Another System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
Case
Anetc DF-85 
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Another System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
Case
Anetc DF-85 
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post #4 of 8
I'd just cut the wires and solder in a few cm extra wire so it reaches when you flip. No reason not to use the perfectly fine original fan with whatever fan control mechanism is being used.

It's a 0.52A rated fan (12VDC, 93CFM, 2800 RPM), so I wouldn't think it's so weak. You're just not putting enough on a load on the power supply for it too spin up that much. If temperatures are higher because of the reverse airflow, then the power supply can just get it to spin higher. It should take care of itself.
Edited by mikeaj - 7/28/11 at 12:34pm
post #5 of 8
Thread Starter 
Quote:
Originally Posted by mikeaj View Post
I'd just cut the wires and solder in a few cm extra wire so it reaches when you flip. No reason not to use the perfectly fine original fan with whatever fan control mechanism is being used.

It's a 0.52A rated fan (12VDC, 93CFM, 2800 RPM), so I wouldn't think it's so weak. You're just not putting enough on a load on the power supply for it too spin up that much. If temperatures are higher because of the reverse airflow, then the power supply can just get it to spin higher. It should take care of itself.
Wow I had no Idea it was that powerful, I guess I didn't think it needed that much airflow considering Its never audible even under full load.

But thanks I guess I'm just going to have to open up the casing and pull the cable out, hopefully their's some that is tucked away(I suck at soldering). but this will be easy enough, and its been unplugged for a well over 24 hours.
Another System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
Case
Anetc DF-85 
  hide details  
Reply
Another System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Ivy Bridge 3770K @ 4.6ghz ASrock Extreme4 z77 2x Sapphire ATI 5870 2GB (Watercooled) G-skill Ripjaws X 2x8GB 2133mhz cl9 
Hard DriveCoolingMonitorPower
4x WD Black 1TB RAID 10 (2TB total) a 240mm, a 280mm and a 420mm radiator, 655 pump... Acer 27in LED LCD Antec CPL-850, CPX form factor 
Case
Anetc DF-85 
  hide details  
Reply
post #6 of 8
Quote:
Originally Posted by mikeaj View Post
I'd just cut the wires and solder in a few cm extra wire so it reaches when you flip. No reason not to use the perfectly fine original fan with whatever fan control mechanism is being used.

It's a 0.52A rated fan (12VDC, 93CFM, 2800 RPM), so I wouldn't think it's so weak. You're just not putting enough on a load on the power supply for it too spin up that much. If temperatures are higher because of the reverse airflow, then the power supply can just get it to spin higher. It should take care of itself.
how do you check to see if your PSU is powering your fans enough?
i have some pretty nice fans in my system and i feel like they aren't spinning as fast as they should.

and i definately agree with ya to just add some wire. you wouldn't have to solder if you had some splicers from like radio shack or something (its just a peice of metal with rubber around it that allows you to crimp two ends of a wire together.)
post #7 of 8
Quote:
Originally Posted by Hazzeedayz View Post
how do you check to see if your PSU is powering your fans enough?
i have some pretty nice fans in my system and i feel like they aren't spinning as fast as they should.
He means the fan in the PSU, which is automatically controlled by load/temperature. Any remotely capable PSU will easily provide enough power for an average set of case fans.
post #8 of 8
Quote:
Originally Posted by t-ramp View Post
He means the fan in the PSU, which is automatically controlled by load/temperature. Any remotely capable PSU will easily provide enough power for an average set of case fans.
yea i figured as much, ima need to upgrade fans soon then :/
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