Decrease my PC temperatures?

[imrevned]

Hello, I just got a Corsair HX750 750W PSU, it has been great so far (extremely quiet); when it detects my PC over 50 degrees celcius, it will go to 100% fan speed and it is extremely loud. I want to try to decrease my PC temperatures so my PC doesn't go into the 60's under load (the graphics card is in the 60's, my CPU is in the 50's).

I am using the NZXT Tempest 410 computer case, it has 2 fans (one in front and one in back), I can install up to 3 more fans (2 of them being 140mm while the rest are 120mm), and I am planning on buying 3 fans for all the slots.

My question is, do you think buying 3 fans for my computer case will decrease my PC temperature so my power supply does not go 100% fan speed and get very loud while playing games/under load. If so, what would be the best choices for fans? I would like to spend around $10 a fan at max and is quiet, but I can always spend more if really necessary.

-EDIT-

Specs:
GPU: Sapphire Radeon HD 7950 3GB (overclocked)
CPU: Phenom II X4 960T 3.7GHz (overclocked)
HDD: 500GB 7200RPM 64MB Cache
RAM: 2x4GB (8GB) G.SKILL Sniper 1333
Monitor: BenQ RL2450HT

When it is not under load my GPU is 30-40 degrees celsius, same as my CPU.

 

[chugot9218]

Post your specs, your PSU fan should rarely run at 100%, I never hear my corsair PSU over any of the other components.

 

[13thmonkey]

its not when it detects your PC temp over 50C, its when it detects its own temps over 50C.

Specs please, inc case, fans and ambient temp.

 

[papablista]

I agree with monkey it sounds like somthing is putting a big load on you PSU and heating it up.

 

[imrevned]

Post your specs, your PSU fan should rarely run at 100%, I never hear my corsair PSU over any of the other components.

Hmm.. mine gets very loud, I can't tell you the exact fan speed, but I read somewhere that that is what the HX750 does (go to 100% fan speed when it detects temperatures of 50 degrees Celsius and above, I am not sure if that is true, but it sure sounds like it).

 

[papablista]

50's and 60's under load are pretty normal temps, if you buy and install 3 more fans your going to have 3 more fans worth of noise I suggest you find out why your PSU is spinning up the fan first are you sure the PSU didn't ship with a bad fan is it a smooth loud noise or rough

 

[imrevned]

50's and 60's under load are pretty normal temps, if you buy and install 3 more fans your going to have 3 more fans worth of noise I suggest you find out why your PSU is spinning up the fan first are you sure the PSU didn't ship with a bad fan is it a smooth loud noise or rough

When it is not spinning really fast it is very smooth, when it is going very fast it's a little rough. Also, the fan's placement is on the bottom of my case, so all the air is being pushed beneath the case against my wooden desk.

 

[13thmonkey]

the fan is sucking not blowing, as it is against the desk it is throttled and therefore not providing air for cooling the PSU itself.

Any chance of actually doing what I asked and providing some actual information to help you with?

 

[papablista]

set your case up on some books and run it that PSU has a PWM (power width modulation) sensor in it( like your bios that detects your cpu's cooling needs ) if the flow isnt steady and is restricted it will try and compensate for it, eg: run faster, I'll look at your case specs and get back to you.

 

[papablista]

get some tower feet EG: rubber pads and stick to the bottom of your case 1/2 inch should do stick them right to the ones already on the case "jack it up"

 

[13thmonkey]

or turn the psu the other way up

 

[imrevned]

get some tower feet EG: rubber pads and stick to the bottom of your case 1/2 inch should do stick them right to the ones already on the case "jack it up"

There are already feet that are 1/2 inch.

 

[imrevned]

or turn the psu the other way up

I could try that, but I don't know if I could screw in in correctly since the screw placement is not symmetrical.

 

[papablista]

did you set it up on books to see if that was the problem 9dont let the book cover the grill), and make sure the grill under the fan (in your case isn't clogged up) if the books work jack it up another 1/2 inch, I looked that case up, even one of the reviews added taller feet to the case they had the same problem,

 

[imrevned]

did you set it up on books to see if that was the problem 9dont let the book cover the grill), and make sure the grill under the fan (in your case isn't clogged up) if the books work jack it up another 1/2 inch, I looked that case up, even one of the reviews added taller feet to the case they had the same problem,

Alright, I have the books set up beneath it, I will get back to you in a little bit to tell you if there is a difference.

 

[imrevned]

did you set it up on books to see if that was the problem 9dont let the book cover the grill), and make sure the grill under the fan (in your case isn't clogged up) if the books work jack it up another 1/2 inch, I looked that case up, even one of the reviews added taller feet to the case they had the same problem,

Okay, after playing some games and having my components reach the same temperatures as before, I can verify that raising the tower has helped. It is not as loud and rough (it is about 1 inch or 1.5 inches higher).

 

[papablista]

on the back of the case where the hot air exits is the grill clean and unrestricted and is the air hot or just warm, I hope you solved it, you can always cut 4 small blocks and use some two sided tape and stick them to the feet on the case you can also find little padded stick on feet at most retail outletS under $2 USD,

 

[imrevned]

on the back of the case where the hot air exits is the grill clean and unrestricted and is the air hot or just warm, I hope you solved it, you can always cut 4 small blocks and use some two sided tape and stick them to the feet on the case you can also find little padded stick on feet at most retail outletS under $2 USD,

The air isn't hot at all, not in the back or beneath the computer tower. Raising the computer pretty much solved the problem, thank you

 

[papablista]

Cool, Enjoy& Happy New Year

 

[imrevned]

Best answer selected by imrevned.

 

[imrevned]

Yeah, it is back. The fan is going crazy >.<