help! changed around case fans and temps went up 14 degrees f

[setfree]

I have an Amd duron 850 in a custom case. I was looking to get better cooling so I moved some fans around. I have 2 80mm crystal led fans on the side at about mid pci level as intake. I also have a 250watt power supply that I wanted to mod a little. I took another 80mm crystal led fan and replaced the ps fan with it. I then took the fan from the power supply and mounted it to the top of the psu. (its on the bottem when in the case.) So now I have an 80mm fan mounted to my psu, and my thinking was that since it is at a 90 degree angle to my hsf, it would take the air from the hsf, blow it through the psu, and out the back. Maybe I was wrong in thinking this. I have relativley cool air coming out my psu but my temps went from about 120f with the stock ps fan, and two side intake fans, to 138f with the two side intake fans and two fans in the psu. Anybody have any ideas on why my temps are rising.

[mrjohnsonjr]

it would seem to me that you dont have enough exhaust fans...

you need more exhaust than intake...

just my opinion

[Alienware_Dude]

True. My setup is two Sunon 80mm exhaust fans, one Sunon 80mm intake fan(I had to drill some holes in my front bezel to allow the intake fan to do it's job. You shouldn't have to do that, mine is a cheapo case), and an Enermax PSU. With that, and my Thermaltake Volcano 7, I get load temps of 43C after 2 1/2 hours of 100% CPU usage, and case temps of 71F, max, with an AMD Athlon XP 1700+.

[TwoRails]

Hi setfree,

before adding more fans, I'd fix the problem first, and get back to the temps you had. I've often put the fan in backward due to distractions and such, so the first thing I'd do is double check as one of the psu fans could be going backward.

Also, look up the specs for all the fans. You may have pulled a fan with 35 CFM air flow and installed one with a lower rating. What are the fan ratings?

Unless you just have to have the fancy fan on the psu, try putting the original back in for a test to make sure something else didn't happen.

HTH

TwoRails

[setfree]

i took the second fan off my psu and it seems that its pushing air both ways, so im thinking that it was blowing the air from the hsf back onto the heatsink. I took it off and now just have one psu, and I switched one of my side intake fans and my temps are now 118f. As for the exhaust I had a rear exhaust fan and it only dropped my temp about 2 degrees. I might hook it up again in the near future.

[Floppyman]

If you're not overclocking, one intake fan mounted in the bottom front of the case blowing air in, and one fan mounted at the rear of the case blowing air out should be plenty of cooling.

I agree move everything back to the original state and then see if you get your original temps back. Then(if you want to keep experimenting) try to move one of the fans to the back of the case (about cpu level) and set it to blow air out of the case. That way you'll have both your Powersupply fan and that other fan, blowing air out.

Hope this helps and let us know what you can come up with.