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post #11 of 23
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post #12 of 23
Quote:
Originally Posted by Prisonbreak94 View Post
So you're saying I should get rid of the exhaust at the back completely? Can you explain the reasoning behind this? And other than that, you're saying have an intake from the bottom (as in the photos I posted), 2 from the front (top and bottom) and one on the side, with 2 exhausts on top, is that right? So 4 intake, and 2 exhaust?
Intake
2xFront (1 optional)
1xTop(front)
1xBottom(optional)
1xSide Panel

Exhaust
1xRear
GPU
PSU



Edited by spaceballsrules - 6/6/11 at 6:23pm
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post #13 of 23
Thread Starter 
Quote:
Originally Posted by spaceballsrules View Post
Intake
2xFront (1 optional)
1xTop(front)
1xBottom(optional)
1xSide Panel

Exhaust
1xRear
GPU
PSU

Just wondering, why so many intake fans and only one rear exhaust? Why is the top fan an intake? Wouldn't it be better as an exhaust?
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post #14 of 23
You don't need all those intake fans. Note that I marked 2 of the intakes optional. You just need more intake than exhaust, and account for all fans, which includes GPU and PSU.
Going from a setup very similar to what you currently have, to having my proposed airflow, I dropped 4*C on ALL temps. It just works, and it has been proven here on OCN by numerous members. Tried and true.
You have to experiment with airflow. It's the only way to find out if one method works better than another. Just remember that air goes wherever you tell it to go. The whole chimney effect (top exhaust) works only in a passive system i.e. no fans. As soon as a single fan is added, that theory goes out the window.
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post #15 of 23
Quote:
Originally Posted by Prisonbreak94 View Post
Any idea where I can find this feature? I'm guessing BIOS, but I never came across it earlier, is there any chance I don't have this feature?


Thanks
Here, this is from your motherboard manual :
post #16 of 23
Thread Starter 
Quote:
Originally Posted by spaceballsrules View Post
You don't need all those intake fans. Note that I marked 2 of the intakes optional. You just need more intake than exhaust, and account for all fans, which includes GPU and PSU.
Going from a setup very similar to what you currently have, to having my proposed airflow, I dropped 4*C on ALL temps. It just works, and it has been proven here on OCN by numerous members. Tried and true.
You have to experiment with airflow. It's the only way to find out if one method works better than another. Just remember that air goes wherever you tell it to go. The whole chimney effect (top exhaust) works only in a passive system i.e. no fans. As soon as a single fan is added, that theory goes out the window.
Alright, I'll keep that in mind and have a go at you're setup today, I'll let you know what happens.

Quote:
Originally Posted by nickt1862
Here, this is from your motherboard manual :
Thank you Nickt, I had a look and it seems as though it is already on
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post #17 of 23
Thread Starter 
Quote:
Originally Posted by spaceballsrules View Post
Intake
2xFront (1 optional)
1xTop(front)
1xBottom(optional)
1xSide Panel

Exhaust
1xRear
GPU
PSU

Spaceballs, I added my two new fans today (there was a delay with the delivery). I tried two things:

First,

Intake

2x front
1x side
1x bottom

Exhaust

1x top
1x rear

Second, I tried the setup you recommended. I actually got better temps when the top was exhaust rather than intake as you suggested. Now, I moved my computer into my frontroom (which happens to be much cooler than my room as there is an AC in here and no AC in my room). The temps are around 39-40C for the CPU and 38-39C for the mobo and 37C for the GPU on idle in the frontroom, which is approximately 24C.

In my room, the temperature is more like 29C. Do you think 45C for the CPU, 40C for the mobo and about 42C for the GPU are the best temps I can get in a room thats approximately 29C? Would you consider these normal temps? Thanks.
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post #18 of 23
In my experience, as ambient temp rises, the computer is cooled less efficiently. That is, your PC temps will rise higher than the rise in ambient temp.

In your case, at 24*C, your CPU runs 14*C over ambient(40*C). If you put the rig in an environment that is 29*C, the CPU will probably run higher than 14*C over ambient, something like 18*C over ambient(29+18=47*C). The hotter it gets, the harder it is for the coolers to keep up.

Make sure you run some stress tests to see what your load temps are. Idle temps don't really tell you much.
Your max temps are somewhere around 62* for the CPU, 65* for the mobo, and ~90* for the GPU. Somebody correct if I'm wrong. Most people are happy if the components are running 10-20* under max.

I am glad that you tried out different fan schemes and found the best for you. Trying different configurations is the only way to know for sure.
Edited by spaceballsrules - 6/8/11 at 11:40am
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post #19 of 23
Quote:
Originally Posted by spaceballsrules View Post
Intake
2xFront (1 optional)
1xTop(front)
1xBottom(optional)
1xSide Panel

Exhaust
1xRear
GPU
PSU

i had a setup similar to this in my CM690II with negative results.

everything was intake, including the side door fans, and the exaust was in the rear and PSU.
my temps were HORRID! my CPU overheated causing EXTREMELY annoying BSODs. socket temps were in the high 50C's-low 60C's load and idled at about 52C!
also my already hot XFX card got even hotter and got to the 90C's. do not want.
i was too afraid to fold because my ambient case temp was soooo hot. everything would overheat!
my fan controller started beeping because it got to 120F+ in my case! my motherboard is already a toasty board, and all that extra heat just cant be healthy :/
then i put the two top radiator fans as exhaust and what a difference!
XFX card is at the 80C's now, and CPU loads at around 53C and idles at 42C


from my experiences, having the rad fans as exhaust REALLY helps.
trust me. you dont want to go against physics! heat rises, so help it along by adding exhaust fans at the top.
    
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post #20 of 23
Thread Starter 
Quote:
Originally Posted by spaceballsrules View Post
In my experience, as ambient temp rises, the computer is cooled less efficiently. That is, your PC temps will rise higher than the rise in ambient temp.

In your case, at 24*C, your CPU runs 14*C over ambient(40*C). If you put the rig in an environment that is 29*C, the CPU will probably run higher than 14*C over ambient, something like 18*C over ambient(29+18=47*C). The hotter it gets, the harder it is for the coolers to keep up.

Make sure you run some stress tests to see what your load temps are. Idle temps don't really tell you much.
Your max temps are somewhere around 62* for the CPU, 65* for the mobo, and ~90* for the GPU. Somebody correct if I'm wrong. Most people are happy if the components are running 10-20* under max.

I am glad that you tried out different fan schemes and found the best for you. Trying different configurations is the only way to know for sure.
You've actually got that bang on with the 47C, I moved back into my room and I'm idling around 46-47C. I put on Prime95 for a few minutes and the temp got to 61 after about 1 or 2 minutes. After seeing 61C, and haearing you say max temp for my cpu is 62C, i hit stop (not sure if im supposed to push it further and see what happens??). My GPU runs at about 70C when im gaming, I don't think thats actually that bad, I just think my temps overall should be lower, especially the CPU. But I have ofc overclocked it to 3.8GHz so that also affects it.. But do you think thats normal that the CPU went up to 61C that quickly when running prime95?

Quote:
Originally Posted by Enfluenza
from my experiences, having the rad fans as exhaust REALLY helps.
trust me. you dont want to go against physics! heat rises, so help it along by adding exhaust fans at the top.
I have 6 fans right now 2x front (top and bottom stock) as intake, 1 bottom intake, 1 side panel intake, 1 rear exhaust and 1 top exhaust in my case. I have one of the stock fans sitting outside. Do you think it will make a noteworthy difference if I also add this as an exhaust on the top rad?
Edited by Prisonbreak94 - 6/8/11 at 12:04pm
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