Cable Forum - System fans - do they suck or blow?

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Gareth

10-08-2005 13:34

System fans - do they suck or blow?

I'm looking at improving the airflow on my case, and at the same time getting some quiet fans to replace one noisy one I've currently got. Anyone got recommendations on the quietest fans (and where to buy them), and is it more efficient to have all them sucking cold air in, all blowing hot air out, or a mixture of both?

I've currently got one on the side (a Cooler Master thingy... pretty quiet, I think it's about 20-ish dB) plus a noisy bugger at the back, and a spare slot - it's these 2 rear ones I'll be buying. The side fan brings air in, and the rear fan sucks outwards.

Electrolyte01

10-08-2005 13:37

Re: System fans - do they suck or blow?

I've found Zalman's fans to be very quiet even in full speed.

If you want the best airflow, have case fans at the back of the case taking air out, and front/side fans taking air in, that way it's a one direction system.

Bifta

10-08-2005 13:38

Re: System fans - do they suck or blow?

Akasa Ultra Quiet http://www.overclockers.co.uk/acatal...a_Fans_97.html

You won't find a quieter one unless you spend silly money on a panaflo or papst.

Tuftus

10-08-2005 13:47

Re: System fans - do they suck or blow?

Tip for you, dont go for Delta's I had two of them in my old dual p3 setup and it sounded like a jumbo jet on take off!!! :D

Halcyon

10-08-2005 14:19

Re: System fans - do they suck or blow?

Yep, I've used the Akasa quiet fans and find them quite good.
Another thing to bare in mind is getting rounded cables to move those big IDE leads out the way. Make sure there is sufficient space around the case.
If you have several fans, you can put them so that some take cool air in through the front at the bottom and then blow out along the back and top of the case.

maverick

10-08-2005 14:34

Re: System fans - do they suck or blow?

I installed a new graphics card which was causing extra warm air in the case,I bought a standard case fan turned it around and it now sucks the extra warm air out,not had any problems since.

Gottu

10-08-2005 15:49

Re: System fans - do they suck or blow?

I've got 3 80mm fans 2 on the back and 1 on the side all pulling air out of my box and they work just fine...infact one of those fans is all thats left of my original system...hmmm maybe I need to replace it :D

zing_deleted

10-08-2005 15:57

Re: System fans - do they suck or blow?

Ive got the side off my case :LOL:

Stuart

10-08-2005 15:59

Re: System fans - do they suck or blow?

In answer to the question: Well, if they are bad they can suck or blow in more ways than one.. :D

Gottu

10-08-2005 16:01

Re: System fans - do they suck or blow?

Quote:

Originally Posted by zinglebarb

Ive got the side off my case :LOL:

Yup thats great for attracting all the moths flies and spiders m8 :LOL: In fact maybe that will crash your machine so we can have a chance at beating you on sh :D

zing_deleted

10-08-2005 16:03

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Gottu

Yup thats great for attracting all the moths flies and spiders m8 :LOL: In fact maybe that will crash your machine so we can have a chance at beating you on sh :D

I got spares ;)

Web-Junkie

10-08-2005 18:26

Re: System fans - do they suck or blow?

If you can fit 120mm fans it would quiet down the noise somewhat as you can get the same CFM's at a lower RPM!

Also consider some form of dust filter on any fan sucking air inside the case, they can get quite dusty inside if left a long time. Some new cases like the Thermaltake Kandalf case use 120mm and 90mm fans as standard (but no dust filter!), 80mm fans are becoming less desirable.

I've yet to see any firm addressing or producing 'dust free' cases though, anyone know of anything in this area?

gooner4life

10-08-2005 18:36

Re: System fans - do they suck or blow?

For airflow I have my fans at the front of the case sucking cool air in and the ones at the back exhausting hot air out.

Ramrod

10-08-2005 18:42

Re: System fans - do they suck or blow?

1 Attachment(s)

I thought that I recently read somewhere that it's best to just have fans blowing hot air out of the case.......if you have to choose between suck V blow.
__________________

My coolermaster stacker case has foam on the intakes at the front (behind the black sections you can see in the pic)......it does quite a good job of catching the dust.

Tuftus

10-08-2005 19:16

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Ramrod

My coolermaster stacker case has foam on the intakes at the front (behind the black sections you can see in the pic)......it does quite a good job of catching the dust.

How does that effect the airflow /noise though, do the fans have to work harder?

Our servers at work have that mesh like fly screen to keep the creepy crawlies out... I hate it when u have to clean em out... :(

AndrewJ

10-08-2005 22:25

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Tuftus

Tip for you, dont go for Delta's I had two of them in my old dual p3 setup and it sounded like a jumbo jet on take off!!! :D

I once made a case for a laugh with a 2400 athlon xp and 512mb of ram and got 12 delta fans in it.

You could hear it outside.

Gareth

10-08-2005 22:30

Re: System fans - do they suck or blow?

Thanks for the advice... will be steering clear of the delta ones, and getting the ones Bif linked to. Cheers all... greenies on their way to you now.
__________________

Oh, greenies all except one person :D

Quote:

Originally Posted by Stuart C

In answer to the question: Well, if they are bad they can suck or blow in more ways than one.. :D

Ramrod

10-08-2005 22:31

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Tuftus

Minimal noise from the entire box :tu: :) Running at 38/41 degs C atm.
__________________

Quote:

Originally Posted by Saxodriver

I once made a case for a laugh with a 2400 athlon xp and 512mb of ram and got 12 delta fans in it.

You could hear it outside.

....and after a while it hovered outside to join you :D

Gareth

10-08-2005 22:34

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Ramrod

Minimal noise from the entire box :tu: :) Running at 38/41 degs C atm.
__________________

....and after a while it hovered outside to join you :D

Shame it hovered and not hoovered :D

nffc	10-08-2005 22:36

Re: System fans - do they suck or blow?

Hmm, I thought this said Suck or Swallow then... :LOL:

As for the actual topic... hmm... they can do either, it depends on which way the blades are pointing.

My aging Athlon XP 2000+ has the fan on the HS and I have one in the side window, the fan in the PSU and another in the back wall. Reasonably quiet but the speed control is turned right down- just as well as it's right by the bed - and left on! Have a 64-bit jobbo on the way, ordered the parts earlier :erm: I would imagine that cooling would be enough. I don't want to buy more anyway seeing as they look good, nice display of blue flashing lights which I can't turn off...

[My typing's gone silly, so sorry if there are any typos I've missed. It's dark]

Gareth

10-08-2005 22:39

Re: System fans - do they suck or blow?

Quote:

Originally Posted by nffc

Hmm, I thought this said Suck or Swallow then... :LOL:

Easy tiger!

Quote:

Originally Posted by nffc

As for the actual topic... hmm... they can do either, it depends on which way the blades are pointing.

er, yeah... I know how to make 'em suck or blow, but I was wondering if it's more effective one way or the other. :rolleyes: :shrug:

nffc	10-08-2005 22:43

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Gareth

Quote:

Originally Posted by nffc

Hmm, I thought this said Suck or Swallow then... :LOL:

Easy tiger!

Quote:

Originally Posted by nffc

As for the actual topic... hmm... they can do either, it depends on which way the blades are pointing.

er, yeah... I know how to make 'em suck or blow, but I was wondering if it's more effective one way or the other. :rolleyes: :shrug:

I can't see how it would make any difference. It's still the same action isn't it, it's just the way it's oriented affects the way the air moves in relation to the PC case...

patrickp

10-08-2005 23:20

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Bifta

Akasa Ultra Quiet http://www.overclockers.co.uk/acatal...a_Fans_97.html

You won't find a quieter one unless you spend silly money on a panaflo or papst.

LOL! Have you looked at Dorothy Bradbury's site?

Bear in mind that her prices are completely inclusive of VAT and postage, as well. About the only fans I ever buy anywhere else now are those little 40mm Sunon Vapo ones - great for chipsets etc.

Bear in mind, as well, that since quality fans like Panaflo and Sunon last a lot longer than other fans at much better noise/airflow ratios, even higher prices work out more economical in the long run.

Patrick

Monster Jedi

10-08-2005 23:32

Re: System fans - do they suck or blow?

Quote:

Originally Posted by patrickp

Are you a big fan of hers:D :Sprint:

Graham

11-08-2005 00:27

Re: System fans - do they suck or blow?

Quote:

Originally Posted by patrickp

Have you looked at Dorothy Bradbury's site?

Interesting, thanks for that.
__________________

Quote:

Originally Posted by Monster Jedi

Are you a big fan of hers:D :Sprint:

You can run, but you can't hide...! :sniper:

patrickp

11-08-2005 18:33

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Monster Jedi

Are you a big fan of hers:D :Sprint:

I am now. Great source of good quality fans at a decent price - if there' s a specific panaflo fan you want, you sometimes have to wait a bit for it to come round, though. But it's spoilt me for buying all the rubbish fans I used to buy.

She _always_ ships the next working day at the latest, and replies fast to emails if you have any problems or queries, and on the rare (well, one) occasion there is a problem, the replacement is in the post immediately, with a paid return jiffy bag for the return. Look at the feedback on her ebay shop - just over 1000 positives and _no_ negatives.

Patrick

cookie_365

11-08-2005 19:50

Re: System fans - do they suck or blow?

I'll put a vote in for Akasa fans - oh, and if you're putting more than one fan in, try to have as many suckers at the front as blowers at the back, in a manner of speaking ;)

Halcyon

12-08-2005 15:16

Re: System fans - do they suck or blow?

This thread reminds me of one of these mad mods someone did once where they surrounded their whole case with fans. It sounded like a jet engine and had about 50 fans attached to it.

nffc	12-08-2005 17:39

Re: System fans - do they suck or blow?

Quote:

Originally Posted by Halcyon

This thread reminds me of one of these mad mods someone did once where they surrounded their whole case with fans. It sounded like a jet engine and had about 50 fans attached to it.

Mine does with 4.

pop80_uk

14-08-2005 00:40

Re: System fans - do they suck or blow?

Ive got 7 fans.
One on the top of the cas, one at the side, a suck in one at the back, and a blow out one at the back, a PCI slot fan, and one which sits between both harddrives keeping them cool and the CPU fan which is heat controlled. They are quite quiet (cheapo ones from e-buyer) But you can hear them if you see what I mean. They do a great job of cooling the case though! :)

marky

14-08-2005 01:53

Re: System fans - do they suck or blow?

Quote:

Originally Posted by pop80_uk

my god do you live in the tropics:erm:

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