Antec True Power 430W=42c to 48c CPU temp?

Demonicon

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Oct 30, 2001
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I recently went from an Enlight 300W(1 fan) to a Antec 430W(2 fans) PSU, case temps went up and my CPU temps went from 42c to 48c. :eek;

Is this extra heat simply from the bigger PSU or because the big ole fan from the PSU is blowing DIRECTLY onto my Alpha Pal 8045 heatsink? I noticed my case exhaust fan is barely pushing out any air. Is the airflow from the PSU fan and the HSF creating some sort of vacuum not allowing air to escape correctly through the case exhaust fan?

If anyone has any ideas on resolving this i'd appreciate it.
 

gdawson6

Senior member
Jan 9, 2002
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well im guessing the alpha and psu and trying to both suck air away from eachother which wouldnt work very well. Try mounting your alpha as blowing even though it wasnt designed for it, or create an duct leading for the pal to a back case fan blowing out.
 

ShinSa

Senior member
Jan 23, 2002
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The truepower is quiet because the fans are rotating slower than other PSUs. This makes them very quiet but makes it perform very poorly in terms of cooling.

The two stacked fans are not as efficient as two seperate fans. The performance are only as good as that of a a single fan. The extra intake is there to provide less resistance to the exaust fan and doesnt pull out more air from the case.

What is the CFM on your truepower??
If you want try replacing the fans with a higher RPM fans. That should solve your problem.
 

DeeTees

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Jan 3, 2002
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If the power supply is blowing onto your cpu you have a problem. Both fans in the true power supply should be blowing air out of the case as should both rear fans.

Did you connect the fan sensor from the power supply to the motherboard?

Have you connected the case fans to one of the fan only leads from the power supply.

I have an Antec 660b case with a true-power 330W and the case runs cool and the CPU temperature runs about 104F under load, with the case fans running very slow.

Both the power supply and the rear fans should be drawing air from the front inlet of the case. If you have insufficient cooling, try placing one of the rear fans in the front fan bracket blowing air into the case.

Remember low cool air in from the front of the case, hot air out from the top at the rear of the case.

 

Underclocked

Platinum Member
Oct 9, 1999
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And, don't overlook that you have gone up by at least 130watts capability on your psu. PSUs themselves can be and are pretty big heat loads so some increase wouldn't be surprising. If you have the case fans connected to the "fan only" connectors, try relocating them to a standard 4 pin molex. Big PSUs are nice for heavy loads but are overkill for many systems. I fail to see why a quality supply between 275-350 watts couldn't provide all the power MOST of our systems would ever require.

My dog's bigger'n yours.
 

Demonicon

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Oct 30, 2001
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<< And, don't overlook that you have gone up by at least 130watts capability on your psu. PSUs themselves can be and are pretty big heat loads so some increase wouldn't be surprising. If you have the case fans connected to the "fan only" connectors, try relocating them to a standard 4 pin molex. Big PSUs are nice for heavy loads but are overkill for many systems. I fail to see why a quality supply between 275-350 watts couldn't provide all the power MOST of our systems would ever require.

My dog's bigger'n yours.
>>



Well, since I bought a new case for my new system (still need CPU and mobo) I thought a nice beefy PSU would be a good match and i've heard tons of great things about the Antec. I certainly did not get a 430W PSU to make anyone feel they NEEDED one over a 300W. Also, overkill and high performance systems go hand in hand, even though I don't think a 430W PSU is "overkill" by any means.
 

mechBgon

Super Moderator<br>Elite Member
Oct 31, 1999
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As has been pointed out, the power supply fans should both be escorting air out the back of the case. All the fans I've seen blow air out of the side with the motor label visible, so you should be able to see the label on the fan at the rear, but not the label on the bottom fan near the CPU.

If you can see both of the PSU fans' labels, or neither of the labels, then the two fans are pushing or pulling against eachother, which would mean the PSU was put together with one of the fans oriented backwards.

As for the wattage issue, I would rather buy a bit more PSU and not work it so hard. It's like buying a Suburban to tow a heavy boat on a trailer... sure, you could opt for the standard transmission and engine, to save the expense of the towing package and the beefier engine, and it may work at first, but it's going to work harder and will probably wear out sooner, all other factors being equal. Then again, at the rate the computer enthusiasts upgrade their systems, maybe it's not much of an issue. :confused: YMMV, I guess. ;)
 

Demonicon

Senior member
Oct 30, 2001
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BTW, thanks for the ideas guys, I did double check and the fan is NOT blowing on my heatsink like i said earlier it was just draft.

Anyway I think it's just an air flow issue as my system temps are high at 30c.
 

mee987

Senior member
Jan 23, 2002
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to sum up what everyone has said, the fan on the back of the psu should be blowing out and the one on the bottom should be blowing in. if this is not the case, open up the psu and flip the fans that need it.
 

Underclocked

Platinum Member
Oct 9, 1999
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Demonicon, sorry I meant in no way to offend you but I think we pc nutz tend to get caught up in the bigger, faster, more is better, mentality and sometimes shoot ourselves in the foot in the process. I went the super wattage power supply route and have now backed down to something more fitting in my system.
Instead of pointing out the obvious I should have offered some suggestion to help. Sorry about that.
 

AntecCSR

Senior member
Jan 18, 2000
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If you have fans connected to the fan only connectors try switching them to regular molex connectors and see if that helps.

AntecCSR
 

Demonicon

Senior member
Oct 30, 2001
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<< Demonicon, sorry I meant in no way to offend you but I think we pc nutz tend to get caught up in the bigger, faster, more is better, mentality and sometimes shoot ourselves in the foot in the process. I went the super wattage power supply route and have now backed down to something more fitting in my system.
Instead of pointing out the obvious I should have offered some suggestion to help. Sorry about that.
>>



I wasn't offended at all :), only reason I even responded is because I know you're right in most cases. One thing I know for sure is i'm not gonna be wishing I got a bigger PSU any time soon. :D
 

xbassman

Golden Member
Feb 25, 2001
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<< If you have fans connected to the fan only connectors try switching them to regular molex connectors and see if that helps.

AntecCSR
>>


This will definately cause the problem you describe.

I just changed from an Enhance 300W to the Antec True430 and my processor temps went down 3C.

I also tried the fan only connections and my case fans operated at a much lower rpm.
Switched to a regular molex and no problems here.

BTW- This is one helluva PS!
I had read posts about a low 5v line and like the posts said my initial line was 4.76v.
After one day they went to 4.97 and have not varied from that! (Asus A7V266-E)

:)
 

satori

Senior member
Nov 2, 1999
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A bunch of guys at the amdmb.com forums were also complaining about something similiar. They, like me, noticed that some Panaflo L1A's would sort of start-stop-start-stop when initially running off the FAN-only lines. Anyways, I ran Prime95 for about 30 minutes to heat up my system. I went from 30/43 to 31/50 (case/CPU). I used my multimeter to measure the FAN-only connection output and it was reading between 5.25 and 5.5 (I can't remember the exact value). So, as xbassman suggested, hooking up your exhaust/intake fans to the regular 12-volt lines should solve your problems...

BTW, I can't imagine what type of output my Panaflo L1A's are giving out, when set at 5.5 volts. Assuming a halving of CFM, that would only be 12 CFM. :)