Air Flow in PC CPU

[FanFreak]

Hey...
Ive use a daisy chain to link my 5 fans tgt....

chain is powered by molex but then there is a pwn linked in the daisy

Plugged into the mb fan header n tried using aisuite.. not working.

Why is that so

PWM, Fan Headers, Fan Xpert...Confused.

cpu header is pwm control
chasis header is voltage control

 

[devilwahaha]

Your intake fans are af or sp?. Where exactly above your gpu card you place the fan at? Blowing the heatsink or out?

Neither. Not using anything corsair in my system.

Front 120mm is some Thermalright fan thats pretty strong in static pressure, pushes quite a lot of air through my 3 HDD at lowest speed 12v, controlled from mobo.

Back 120mm is Scythe S-Flex SFF21G, not really a strong fan, just using it to move some air in running at minimum speed too.

Top 140mm exhaust is some cheapo Corsair fan my friend gave me, also just to move air out, but at max speed cos the max speed is pretty slow.

This is what people will call a "negative pressure" case but my temps are very well so I dont really care about it. Even with positive pressure my place is so dusty I will still have to do full scale cleaning at least every 3-4 months so no difference.

i think its your mx4... with the stock thermal paste, the fans will ramp up to 56% during intensive gaming which is audible.

your fan on top should blow air in so the the gpu has fresh supply of air

Nope it was pretty well with stock paste too. If I had some other decent cheapo paste I wouldnt want to waste mx4 on this lol.

The reason I placed a 140mm exhaust at the top is because previously when I only had two 120mm intakes front and back and no exhaust, I can literally feel the side panel warming up, which probably means there's positive pressure building up but also extreme heat build up. I see no point in using top fan as intake when it will just accumulate dust like crazy even if I used a filter, which I do not have any 140mm filters.

Besides, the fresh air thing that many people are so hyped up about is really pretty silly to me. Even if I were to change the top 140mm to intake which it is positioned almost directly above the GPU's fan about 3 PCI slots away, where will the hot air end up going from there?

My atx casing no have fresh air in except from the front. Do I need to put 2 120mm fan for airflow in at the basement? Doing that will make the modular wires trapping the airflow though...

If you dont already know, for a case as big as yours, if you will just be using CPU/GPU with maybe 1 or 2 HDD, one intake and one exhaust is plenty already. Anything more is merely luxury and probably can help you reduce your CPU/GPU temps by 1-2 degree, which to me is pretty pointless.

Also something non-related to airflow, I hate putting fans on case floor because I sometimes drop screws when taking the system apart, and having to fish them out of fans is really unnecessary trouble.

I'm going to buy 7 new fans to replace including cpu chassis and power fans.

Which brand should I go for?
Cpu cooler : ??
Rear x1, top x2, basement x1, front x 2 :??

7 is a overkill, but go ahead if you want to

 

[ZawLee]

The temp is still above 80 degrees for cpu and gpu in full load.

 

[devilwahaha]

The temp is still above 80 degrees for cpu and gpu in full load.

GPU above 80 is pretty common. What GPU and CPU are you using? By the way I'm using intel stock cooler on CPU and I idle at 50-47 degree and peak at 67 which is most likely from dota 2.

 

[ZawLee]

I5 4440 haswell

Power color r9 270x devil edition

Using intel stock cooler too.

Dota2 = 80 degrees

 

[DeenzX]

Your ambient temp too hot le ba.. With 7 fans still 80C. Either that or you GPU thermal paste drying out le. Or your GPU fan not feeling the heat.

 

[ZawLee]

That's with basic initial fans.. not 7 fans.

 

[DeenzX]

I want yellow led fans... ... ...

 

[DeenzX]

I just got a Bitfenix Prodigy.. Will post some picture and review by tomorrow! It is a damn good case IMO, except for the plastic handles.

 

[DeenzX]

I was just surfing around the internet on Casings that are built to be compact, and I stumbled upon the Bitfenix Phenom mitx.

Holy crap, this case is nice and stuff, but the one bad thing that caught my attention is this:

Can you spot the mistake?

 

[User-name]

I was just surfing around the internet on Casings that are built to be compact, and I stumbled upon the Bitfenix Phenom mitx.

Holy crap, this case is nice and stuff, but the one bad thing that caught my attention is this:

Can you spot the mistake?

Cannot exhaust the hot air?

 

[DeenzX]

Cannot exhaust the hot air?

The GPU don't have fresh air!
The GPU fans are right smack against the wall of the case, how can bitfenix miss out something so dire like this?!

 

[ZawLee]

Guess the casing is meant for low end gpu card

 

[tony_ong]

i think the first pic is a user self mod..

 

[crystalnox]

The GPU don't have fresh air!
The GPU fans are right smack against the wall of the case, how can bitfenix miss out something so dire like this?!

Just pretend you have a single crossfire middle amd card.

 

[DeenzX]

i think the first pic is a user self mod..

No, you can remove the HDD cages in Bitfenix. To make space for a long GPU like that.

 

[DeenzX]

Just pretend you have a single crossfire middle amd card.

Hahaha, this set up is kinda dumb also.. The lowest card will heat up, then the 2nd lowest draw warm air to 'cool' itself, then the 3rd lowest draw even warmer air to 'cool' itself.. by the time reach the top card, it is sucking in hot air to sauna itself. The top card can be cooled by moving air above though..

 

[tony_ong]

No, you can remove the HDD cages in Bitfenix. To make space for a long GPU like that.

i mean the side fans

ohh... its the gpu fan... hahas i see wrongly just now..

 

[DeenzX]

i mean the side fans

ohh... its the gpu fan... hahas i see wrongly just now..

Yeah, so this casing is greatly flawed because of this, imo. I have the bitfenix, and they have included vent holes for the GPU, and thus my GPU is getting constant supply of fresh air directly from the outside, so my temp is at max 65C during Dota 2.

Even my GTX 580 reaches 76C for a ref card, in my phantom 401, that's why vent holes are important.

 

[EienShouko]

Hahaha, this set up is kinda dumb also.. The lowest card will heat up, then the 2nd lowest draw warm air to 'cool' itself, then the 3rd lowest draw even warmer air to 'cool' itself.. by the time reach the top card, it is sucking in hot air to sauna itself. The top card can be cooled by moving air above though..

Not really that dumb vs aftermarket designs.
That picture has reference blowfans, that expel the hot air through the back.
If they were aftermarket ones which expel them within the case, you'd have even more fun trying to cool them down!