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PSU running too hot?

B

Budzman

[H]ard|Gawd
Joined
Jul 9, 2001
Messages
1,035
I have a Antec Truepower 2.0 550w psu (TP2-550EPS12V).

Now it operates at 49-51c idle, under load it goes upto 55-63c.

I have 2 7800's, 3 hard drives, 1 DVD drive, 4 case fans and a water pump hooked up to this.

The fan on the back of the psu only runs at 950 rpm and 1050 when it gets to 56c+ or higher. This doesn't seem right to me. That rear exhaust fan should be running alot faster than that no? I mean thats why the freaking thing is running so hot.

I contacted Antec and their tech support said that their is noway that I am able to check the temperature of the PSU and closed my support ticket even though there is a temp probe that plugs into my motherboard allowing to view the temp through the bios or with the motherboard monitoring software that came with my motherboard. I just laughed at that cuz they don't even know their own product.

Anyways with the psu running that hot I get the feeling that it's not gonna be lasting me too long. Any other users of the psu have this same issue?
 
56C is way too hot for any power supply.

When I tested the ePower Fanless Lion, I had the CompuNurse stuck right on a MOSFET heatsink inside the PSU and that thing never got over 50C inside.

How are the ambient temps of the case? The PSU getting hot isn't a side effect of being the exhaust solution for your chassis, is it?
 
I understand that the power supply is probably running too hot, but there is no motherboard sensor that is going to give you an actual, accurate reading of the temps inside your psu. That is probably what the Antec guy was talking about.
 
Killaapp said:
I understand that the power supply is probably running too hot, but there is no motherboard sensor that is going to give you an actual, accurate reading of the temps inside your psu. That is probably what the Antec guy was talking about.
Click to expand...
Ditto -- Antec PSUs will only come with a 3-pin RPM monitor for the rear 80mm fan, but no temperature reading. I know that my TruePower 430W would hit 1700rpm under full load in the summers. It'll boot up and barely register 1400rpm on a cold winter morning.
 
Budzman said:
....even though there is a temp probe that plugs into my motherboard allowing to view the temp through the bios or with the motherboard monitoring software that came with my motherboard.
Click to expand...

Ok. I want to make sure I understand this. What I was thinking based on what you typed is that there is an interface on your motherboard that allows you to plug in a thermistor. You took this thermistor and stuck it inside your power supply to get a temperature reading, right?

Otherwise, there IS no way for you to get a temp reading for your PSU from your motherboard's monitor software.

When a PSU has a thermistor, that thermistor gets an ambient temperature reading from your PC so it knows how fast to spin it's fans because more often than not your power supply's fans are part of your chassis's total cooling solution.

When a PSU has a single wire on a three-pin header, that's just to monitor the power supply's fan RPM.

I just want to make sure we get all of this out of the way before we go further. You know. Make sure everyone is on the same page. ;)

I just laughed at that cuz they don't even know their own product.
Click to expand...

I don't understand. Since when did Antec make DFI boards? It's like I had a friend of mine get yelled at by a customer because the ATX and 2x2 power connectors were too close together on the motherboard so the power supply connectors wouldn't fit properly. Umm... He didn't sell him the motherboard. Just the power supply. Know what I mean?
 
Man! Are you overclocking anything? Cripes, with a dual core and two 7800's maybe you're getting over 550 W.
 
Anyways the point of my post is the heat coming from my psu.

If I put my hand on the back of where the fan is, it is pretty much just as hot as my video cards under load. That just doesn't seem normal.

So with the stuff thats in my box is a 550w psu not enough? Is there a way to manually control the fans in the psu?
 
Budzman said:
Anyways the point of my post is the heat coming from my psu.

If I put my hand on the back of where the fan is, it is pretty much just as hot as my video cards under load. That just doesn't seem normal.

So with the stuff thats in my box is a 550w psu not enough? Is there a way to manually control the fans in the psu?
Click to expand...

It should be enough, but if it's putting out that much heat, maybe there's just plain something wrong with it.
 
My Enermax noisetaker has a manual fan adjuster. I also have an Enermax case which has a control knob for the case fans as well. I think the combination is kind of sweet. It allows me control during these warm summer days.

\EDIT: I know this sounds kind of drastic, but if you need a temporary solution, maybe take off the side panel and use a 12 inch regular house fan to cool your system. Sounds wicked but one guy on the Atari forums did it and posted pictures of it.
 
It seems to me that you need additional case cooling.
Antec's work best if there is some positive pressure in the case,
so we want more CFM's blowing in, than blowing out.

A top blow-hole even without a fan is almost always an improvement.

GL ;)
 
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