Case cooling

John24 · 4 Feb 2011 at 15:58

I'm looking for as close to silent as possible, how does this sound.

CM-690 - Already got
Fanless psu
NH-D14
DEMCiflex filters on the intakes

Fractal Design 120mm
Rear Exhaust

Fractal Design 140mm
Top Exhaust - Rear possition
Front Intake
Bottom Intake
Side Intake - Bottom possition

Tape Up
Side - Top possition ( D14 will block this off I think )
Other side (80mm)

So 3 intake, 2 exhaust, 4 x 140mm and 1 x 120mm. Should give possitive pressure and sufficient airflow for the psu.

I use onboard graphics so the only PCI card being used is my TV card. Atm it'll be cooling my athlon2 620 and I'll be upgrading to either Phenom x6, SandyBridge or Bulldoser as soon as it's clear where Bulldoser sits.

zebedeee · 4 Feb 2011 at 16:02

never had that case, but i suggest the HAF 922, it's awsome for cooling + wire tidyness and very quiet and lots of room for upgrades/expansions.

The HAF 922 is also only £80 from overclockers, it's cheapest place for the HAF 922

John24 · 4 Feb 2011 at 16:40

John24 said:
CM-690 - Already got

I guess you missed this bit mate.

OLDPHART · 4 Feb 2011 at 17:35

Hi John24, l,v got the FT01 case that works on positive air pressure x2 180mm fans 110cfm, x1 front bottom / x1 top rear. To be honest l dont think the 140mm have enough air pressure. I have just checked and you only have Fractal > Air Flow: 39 CFM, so even with x4 Fractal fans can't see them doing it.

DEVIL W0LF · 4 Feb 2011 at 17:41

Hi guys, sorry OP don't mean to hijack your thread but can i ask a quick question related to case cooling.

On my motherboard i have three case fan connectors and i also have three case fans.
Dose it matter what fan i connect to what fan port on the motherboard ?

My motherboard is a MSI P67A GD65

Thanks

John24 · 4 Feb 2011 at 18:01

OLDPHART, Hi, are you saying those fans don't shift enough air to create possitive pressure?

As I understand it, all fans being equal, as long as you have more intakes than exhaust you have possitive pressure.

In my proposed setup there would be 3x 140 intake and just 1x140 + 1x 120 outake.

Josh P · 4 Feb 2011 at 18:26

John24 said:
In my proposed setup there would be 3x 140 intake and just 1x140 + 1x 120 outake.

Given you're not using an external graphics card, I would've thought you're not going to loose much with 2 filtered intakes, one CPU fan and one exhaust. I can't believe you're going to need anything more than this, given that it's the setup I have (i7@4GHz & GTX580).

FWIW, I'd just get a normal PSU and let it cool itself rather than having lots of fans to cool a passive one!

OLDPHART · 4 Feb 2011 at 18:28

Yes you will have positive air pressure, but it won't be strong enough to work properly to push the hot air out as l say your fans have only 39cfm where my 180 fan has 110cfm. IF l put my hand at the rear of the case l can feel the air coming out the case, are cases are roughly the same length 500mm, know boubt Siverstonetek must have tested which fan to use and the number of fans + cfm to use to give the best option.

zebedeee · 4 Feb 2011 at 19:59

John24 said:
I guess you missed this bit mate.

yh you're right i had missed that bit, thnx

John24 · 4 Feb 2011 at 20:07

zebedeee, no worrys, thanks anyway.

Josh P said:
FWIW, I'd just get a normal PSU and let it cool itself rather than having lots of fans to cool a passive one!

Hehe, that's not really the main reason for all the fans, although I might of made it sound like that, sorry. I thought more quiet fans would be quieter than fewer more noisy fans.

The reason for fanless psu is the fan in my HX650 has become the loudest in my PC, it's already a waranty replacement and while it's still in waranty I'm not sure corsair would replace it for this reason, even if I wanted to spend the £16 to send it to them and risk the replacement being just as noisy. So I'm going to get a fanless one and keep the corsair as a spare. The fanless won't add much heat anyway, it apparently runs pretty cool and there is no fan to turn noisy.

OLDPHART said:
Yes you will have positive air pressure, but it won't be strong enough to work properly to push the hot air out as l say your fans have only 39cfm where my 180 fan has 110cfm. IF l put my hand at the rear of the case l can feel the air coming out the case, are cases are roughly the same length 500mm, know boubt Siverstonetek must have tested which fan to use and the number of fans + cfm to use to give the best option.

Ok thanks, I'll consider higher RPM fans, like Noctua NF-P14, and running them off a controller.

Currently I've got just the stock top 140mm exhaust and rear 120mm exhaust running at 700RPM and they are keeping temps respectable.

In the new setup I could always add another exhaust to the top and intake on the bottom if need be aswell.

What would be good is high CFP fans connected to a fan controller that is capable of turning individual fans completely off. Then I could easily manage noise/heat. I've not come accross such a controller yet though.