PC Case cooling fans

[PAUL R]

Hi Guys and Guyesses,

Could anybodytell me, Do PC case cooling fans force air into a PC case or extract air from the PC case?

I have a mother board monitoring system that tells me the zone temperatures ,and each has a limited threshold before it alarms.


It appears that the temperatures are always near there mid point range 55to60 degrees.
Is this normal?

i.e. green go's up to 50 degrees, yellow go's up to 70 degrees,and red thereafter.(The threshold is 70 degrees).This is the Processer zone.


The other two areas, 1 and 2, run at about 10 degrees lower,45to50 degrees,(the threshold here is 60 degrees)these are zone areas in the case.
Is this normal?



At the moment they are all forcing air into the case,exept one which is a extractor fan which is situated in the back of the case (like a plug and play grapics card/dial up modem).(the one fan at the side of the case sounds as though it is surging),

Or should i reverse the fans?

There is plenty of space around the case for air to travel(exterior), and there are the natural vents that are built into the case,But i think that the PC is running too hot, As i was talking to a man in PC world and he said case temperatures are around 26 degrees.

Any advice would be welcomed

 

[guydewdney]

case temps of 26?? CASE yes, motherboard, no - more like the 50 degree range.

fans - best system is a set of in's and an equal amount or slightly less of out's.. The reason for this is that you want the Ins to have a filter on them, ands the case to be at a slight positive pressure to keep dust out (given it a hoover recently?? seriously)

so - say two In fans, with filters, one out fan (no filter needed) - the excess air goes out the vent holes.

Mount the In fans at the bottom, the out at the top if you can

Keep HDDs as far apart as reasonably possible - they build up a lot of heat - soem people have dedicated fans on these - but only really necessray if you have 3 / 4 / 5 HDDs..


Just my 2p

 

[PAUL R]

case temps of 26?? CASE yes, motherboard, no - more like the 50 degree range.

fans - best system is a set of in's and an equal amount or slightly less of out's.. The reason for this is that you want the Ins to have a filter on them, ands the case to be at a slight positive pressure to keep dust out (given it a hoover recently?? seriously)

so - say two In fans, with filters, one out fan (no filter needed) - the excess air goes out the vent holes.

Mount the In fans at the bottom, the out at the top if you can

Keep HDDs as far apart as reasonably possible - they build up a lot of heat - soem people have dedicated fans on these - but only really necessray if you have 3 / 4 / 5 HDDs..


Just my 2p

Thank you kind Sir,

So in that case (no pun intended), i will work on a 2 to 1 ratio with the fan set up.
The motherboard seems to be at the correct temperature then, It is only the motherboard that has sensor temperature take offs .
No actual case temperature,unless i fit one to the case .

 

[Spinal]

I agree, equal in and out fans. In fans really really really need filters! The amount of bunnies they create otherwise is freaky (uf comes to mind...) Try mounting your out-take fans at the top (hot air rises) and try to channel the cpu fan air out of the case. The 3 most heating components are CPU, HD and GPU(especially on the newer ones). Some might argue that ram can create alot of heat, but I've never seen my RD reach over 50ish... (overall case temp 20-30, processor running at no more than 40... we like it COLD!)

Speaking of which, my alarm temp is set at 40, and shutdown at 50.... today my mobo has been going insane, the first time I heard the siren I though, busted...

Forgot to say, if you want cold and silent, you might consider something a bit more fluid... Water cooling solutions can do a lovely job

 

[PAUL R]

I agree, equal in and out fans. In fans really really really need filters! The amount of bunnies they create otherwise is freaky (uf comes to mind...) Try mounting your out-take fans at the top (hot air rises) and try to channel the cpu fan air out of the case. The 3 most heating components are CPU, HD and GPU(especially on the newer ones). Some might argue that ram can create alot of heat, but I've never seen my RD reach over 50ish... (overall case temp 20-30, processor running at no more than 40... we like it COLD!)

Speaking of which, my alarm temp is set at 40, and shutdown at 50.... today my mobo has been going insane, the first time I heard the siren I though, busted...

Forgot to say, if you want cold and silent, you might consider something a bit more fluid... Water cooling solutions can do a lovely job

Cheers Spinal,
I had forgoten about fluid cooling,I will try the 2to1 ratio first and see how i get on.


Thanks

 

[marcos]

I always find that the AMD chips seem to run hotter and are a real pain in the ass if cooling isn't sufficient. My freind has a mini air conditioning system just for his PC's
As said above the cooler the better but watch the noise levels with all those bloody fans.

 

[mercmanuk]

intake fans at the bottom extract fans at the top in an ideal setup

 

[Messa]

Just remember that a tight fitting case cools more efficiently than one with holes. I know of people who run their power PC's with the side off to keep temp down, this is nonsense as PC's need airflow to cool.

Messa