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Advise on fixing/optimizing airflow (NZXT Tempest)

post #1 of 25
Thread Starter 
Hey guys,

I need some advice on how to get optimal airflow in my NZXT Tempest case, and I was hoping someone on here knows the answer!

The reason why I am asking this, is because I'm having bad temps (not severely, but could definitly be better)

Here's a (bad) picture with my current fan setup.
mycase.png

The red arrows are the direction and location of case fans.
The blue arrows are 'hardware-related fans'
Also, there's a sidefan blowing on top of the graphics card.

The main problem is the GPU. I have the PoV GTX570 with dual fans.
When overclocked to 820/1640/2000 at 1,013v (which should be considered a rather mild OC, no?) temps rise to 82C in Crysis 2.
Someone in the GTX570 overclock thread has exactly the same card as me, but his temps are like 15C lower.
Room temps should be about 18C btw.

I personally suspect it has something to do with the PSU. Although I am not sure.
Also, the front-bottom intake fan blows through a box with 4 HDD's, so that air is already warmed up...

What would be the best way to solve this (and further optimize airflow)?
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post #2 of 25
Err... Flip the PSU, Don't you have a fan filter down there?

EDIT: No you don't...
Edited by pepejovi - 11/7/11 at 3:02am
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post #3 of 25
Thread Starter 
Quote:
Originally Posted by pepejovi;15602358 
Err... Flip the PSU, Don't you have a fan filter down there?

EDIT: No you don't...

Wouldn't that cause a problem? Because then the PSU would have like 2cm space left to suck air from.
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post #4 of 25
Do you have a hole for the PSU to intake air from in the bottom of the case? My HAF912 plus has a fan hole there along with some 1-2cm feet on the case, and my PSU hasn't blown up yet =)
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post #5 of 25
Thread Starter 
Sadly enough, no I don't. If that were the case, flipping the PSU would not have been a problem tongue.gif

EDIT: Although I can flip the fan inside the PSU, but I'm not sure if that's a good idea..
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post #6 of 25
Do you have the tools to mod an opening to the bottom? It really is useful, and if your case doesn't have feet, you should get it some.
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post #7 of 25
1) GTX570 with 820/1640/2000 at 1.013v is, indeed, a mild overclocking. Its load temp of 82C is quite high, especially when the ambient temp is a lowly 18C. So, something is not quite right.

2) While your PSU's intake fan is competing with the GTX570's two fans for fresh air, I reckon this is not the main culprit.

3) Rather, I suspect the card's fans are not receiving the fresh air needed. Instead, they are receiving much of the warmed up air (due to the 4 harddisks) as well as its own hot exhaust (being recirculated back). See the red arrows in pic 1 below.

2 suggestions:-

a) POV GTX570:- I reckon its hot air is exhausted mainly through the front and partly via the rear (due to the heatsink fin orientation). Therefore, I propose to make a shroud (with hard cardboard paper or strong plastic) to channel the card's front hot exhaust upward. See pic 2 for the idea. This should minimize its own exhaust being recycled back into the 2 fans.

b) HDDs: Move the 4 HDDs to the upper box so that the warmed air will be carried to the upper half of the case (ie away from the GPU).

Note:-As the hot air is being directed to the upper half of the case, the temp of the CPU might rise. Monitor that and see if it is acceptable to you. If not, then a complete overhaul of the case's airflow is needed (vs this partial solution).
post #8 of 25
you can try this.
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post #9 of 25
Thread Starter 
Thanks for all of your answers so far! biggrin.gif
There indeed is not something right, I removed the side with the fan, and temps dropped from ~82C to ~70C (playing Crysis 2).
Quote:
Originally Posted by pepejovi;15602778 
Do you have the tools to mod an opening to the bottom? It really is useful, and if your case doesn't have feet, you should get it some.

I don't really have the tools required, and I don't want to mod my case unless it's really necessary. I'm a little afraid of ruining my case xD
Quote:
Originally Posted by windfire;15603147 
1) GTX570 with 820/1640/2000 at 1.013v is, indeed, a mild overclocking. Its load temp of 82C is quite high, especially when the ambient temp is a lowly 18C. So, something is not quite right.

2) While your PSU's intake fan is competing with the GTX570's two fans for fresh air, I reckon this is not the main culprit.

3) Rather, I suspect the card's fans are not receiving the fresh air needed. Instead, they are receiving much of the warmed up air (due to the 4 harddisks) as well as its own hot exhaust (being recirculated back). See the red arrows in pic 1 below.

2 suggestions:-

a) POV GTX570:- I reckon its hot air is exhausted mainly through the front and partly via the rear (due to the heatsink fin orientation). Therefore, I propose to make a shroud (with hard cardboard paper or strong plastic) to channel the card's front hot exhaust upward. See pic 2 for the idea. This should minimize its own exhaust being recycled back into the 2 fans.

b) HDDs: Move the 4 HDDs to the upper box so that the warmed air will be carried to the upper half of the case (ie away from the GPU).

Note:-As the hot air is being directed to the upper half of the case, the temp of the CPU might rise. Monitor that and see if it is acceptable to you. If not, then a complete overhaul of the case's airflow is needed (vs this partial solution).

Thanks for confirming. I guess you hit the nail on the head tongue.gif
Suggestion B is the easiest to try, so I'll start with that.
If I would try suggestion A, and the CPU would get too hot, would it help if I turned the top fan on front?

If I flipped the fan inside PSU, would this cause any trouble for the PSU itself?
If it's possible, this would stop the PSU and GPU competing for fresh air.
Quote:
Originally Posted by rdr09;15603194 
you can try this.

I am sorry, but I'm having trouble understanding why removing one of the fans on top would help? Could you explain further?
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Warscythe
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post #10 of 25
same case as you. i got my heatsink set up in a push pull configuration and bought some good fans for intake and my rear exhaust. how long have you had the case fans?
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