Want to get a PSU because the current one is producing too much heat

I

inclemental

New Member
I've an Antec Sonata II case comes with the Smart Power 2.0 PSU...
Its a soild PSU for normal use.
However, I've found it causing too much heat because one of the fans doesn't run until certain temp is reached...
since the PSU is located right above the CPU, my CPU's temp record is 43+C @idel, 49C @60% load, and 61C @90% load. Meanwhile the MB is 41C to 46C

Just wondering does the PSU really affect that much?
My other computer only recording 25C @idel and 48C @80% and MB is 36C to 41C

If i ever goin' to get a new one, which one will be better in term of quality and temp?

i saw a server PSU which have decent spec. 39A @12v, however, it only has 50000hrs <25C. Do i ever need a server PSU for my desktop?
 
39 A is serious overkill for a desktop. You should only need at most around 26 A. Try and find something a little more mainstream.
 
my antec smart powr 500watt psu is very quiet and doesn't heat up the cpu..My cpu is about 28Cidle and 32C load. it could be that your case has bad ventilation.
 
your case needs more air intake and more air exaust

its not the intended job of the psu to cool your computer environment, they do get "coeirced" into that role as the air from with the case is the only source for incoming air, but thats a very abusive situation you have going there for you PSU.

I always build units with atleast 240mm's of air flow 3 fans of 80mm each or 2 fans @ 120mm each one fan 120mm and two @ 80mm etc

computer life span is all about internal temperature >>>>> when the case temp hits 52C the PSU will auto shutdown not to mention high heat increases your de-rating curve big time regarding PSU output!
 
reason why i would think of the PSU is that its the only heat source i would find from the case.

Features:
Flow-through dual 80mm fans (one intake and one exhaust)
Unique Dual Fans Technology: exhaust fan starts to spin when the power supply reaches certain temperatures to ensure proper airflow, the second fan spins on power up
Industrial grade protection prevents damage resulting from short circuits, power overloads, excessive current, low voltages and excessive voltages
Increased 12V output capability for system components that consume more power from 12V rail
Click to expand...

also this unique feature stores tremountous heat at the front end of the PSU
 
Add a 120mm intake fan, that should help a bit, cause I have no trouble with my PSU when it comes to heat at all, and mines a 500watt smart power.
 
maybe i will try that first to see any improvment...u sure intake will do a better job than exhaust directly from the PSU??
i can get a funnel to do that...
 
Regardless of what you system is >>>>> it needs air flow and hot air exaust!


I have seen hordes of fellas remove their motherboards and dremel out larger holes to accomodate larger 120mm holes / or buy a case with two 120mm fans ?????


and you are correct but in a round about way. A PSU that has two fans >>>> intake and exaust is of course wayyyy better than; say one with only one exaust fan and passive grills intake air (intake air comes from within the case)

But there is no PSU out there that likes hot air. There is no PSU made that states "use this one because we can handle hot air easily"

I dont say this provokingly. I only trying to share some info of how desperately you need more air flow.

Now another situtation that may well apply is your PSU maybe to small and inefficient to handle your rig.

This concept is the same as why dont they put 4 cylinder engines in full sized pick-=up trucks; becasue they must work tooo hard then they get too hot, then they blow up. Same is true with a marginal sized PSU, it will work too hard to deliver the needed voltage the system requires, then it will put out too much heat, too much heat severely stresses ALL computer parts.

My self persoonally I love for PSU's like enermax that have psu fan spped control then I set my to full full rpm all the time, I dont care about noise (even though there is very little noise from the noisetaker series) I want the coolest system I can get from air cooling / PERIOD

by ramping up the PSU cooling fans to full throttle all the time my units stay far cooler than most.

best regards

joe
 
That's exactly why I asked for his rig a few times already. Though unless he has some crazy SLI setup, I'd doubt his SP 450wat psu would struggle to keep up. Also, the Antec Sonata II case has one 120mm intake and one 120mm exhaust (i'm pretty sure of that). If he puts both of those fans at full, it won't really matter if the PSU fan is full throttled or not, as the 80mm fans on the PSU are no match for the 120mm the case can accomidate.


EDIT: Or it could be that he has a really hot prescott or something like that..
 
PD 940 stock
ZALMAN CNPS-7700 Alcu
P5LD2
1gb 667mhz
250gb sata2
x550 256mb
120mm intake
120mm exhaust

its just a normal pc for my gf...nothing speical...
this setup was in my antec p180 case with normal temp...however, after i transplanted it to the sonata case, the temp just get much higher than in the p180. i have both 120mm intake and exhaust running. so the airflow should be ok around the case. however, as i mentioned before, the exhaust fan will be only activated when certin temp is reached. otherwise, only intake fan (1430rpm) running constantly. hot air just trapping inside the PSU.
 
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