hsf which way should the fan blow away from or towards the cpu

[bdyeager]

thanx

 

[sandmanwake]

The heat sink and fan I got that came together has the fan blowing towards the cpu. Makes sense, since you can't suck too much air from the direction of the heat sink.

 

[Boonesmi]

it depends on the heatsink design, but for the most part they work better if they blow toward the hsf

but not all of them, the alpha 8045 is designed to have the fan pull air away from the hsf



if you go to the homepage of whoever makes your hsf it will probably say which direction they recommend

 

[bdyeager]

i do in fact have the alpha pal 8045 and on the way is a 68 cfm delta fan for it
it is in fact suppose to blow away from the hs
1700+
8kha+
sb live platinum
g4 mx440
a95f viewsonic
pf790 viewsonic
hp 882 printer
hp 4470c scanner
creative inspire 5.1 5300
logitech cordless keyboard
logitech cordless optical usb mouse
alpha pal8045
wd fire wire card with sony camcorder
linksys ethernet card
ibm 60gb 7200 rpm
pioneer 16x dvd
plextor 16 10 40 rw
usrobotics hardware voice/fax modem
4 port entrega usb hub
4 port linksys router
motorola surfboard cable modem
500 watt comp usa psu
fuji digital camera usb
512mb crucial ram pc2100
windows xp home

 

[bdyeager]

and an ati tv wonder card

 

[Buz2b]

<< and an ati tv wonder card >>

Towards the GPU.

 

[bdyeager]

gforce 4 mx440 im running two monitors off it
the tv tuner card is seperate

 

[Deadlifter]

Well,

I've got a little first hand experience since I screwed up when I installed my new SK6 and had the fan sucking from the heatsink.

After I flipped it around I got a 4-5 degree C drop in temps!

 

[Shaorinor]

Heatsink with fins - fan blow toward the heatsink.
Heatsink with pins/heat shroud - fan sucks air away from the pins.

 

[Boonesmi]

not always

the zalman5000 series has fins, but they are designed to have the air sucked away 🙂


and as a side note i used to have a zalman5000 and if the fan was set to blow air toward the fins the temps would go up 4 or 5 degrees

 

[chuta]

Ok..well I looked on the thermalright website and could not find any info on direction of fan for the AX-7. Mine right now is blowing away from HS and I am getting 48 C non OCed (1800xp). So I guess I can flip it and see if it lowers...but anyone have any insight before I do so? Thanks.

 

[kursplat]

with a shroud it should pull- without it should blow on the heat sink.

 

[CoDerEd]

I used to have Volcano 7 on my Athlon XP, I tried both way and no difference on temps.
In fact when it suck the air from the Heatsink, the mobo was cleaner, no dust.
I guessed when the fan blowing towards the cpu it also bring dust and spread it
all over the mobo.