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XP-90 Suck or Blow?

B

blinky2004

Member
Hi guys,

Got my XP-90 and Vantec Stealth 92mm fan for my AMD64 3000+ Winnie and Asus A8N-SLI.

I know thermalright say it doesn't make much difference whether the fan is set to blow air down onto the processor + heatsink or set to Suck up air but I was wondering what users found was best.
 
Blowing onto the CPU is always preferable, except in cases where there is 1/2" or less clearance above the fan. If in doubt, try both.
 
try both. For me, fan oriented out of the board works better for some reason. For most cases fan oriented into the board works better.
 
if you were hot and sweaty, would you prefer a fan to blow directly onto you, or would you rather stand behind it and have it suck the air off of you.
 
Originally posted by: nick1985
if you were hot and sweaty, would you prefer a fan to blow directly onto you, or would you rather stand behind it and have it suck the air off of you.
Click to expand...

Couldn't have put it better myself.
 
Originally posted by: nick1985
if you were hot and sweaty, would you prefer a fan to blow directly onto you, or would you rather stand behind it and have it suck the air off of you.
Click to expand...

😀
 
there ARE other reasons to having a computer and internet. Use them to "relieve" yourselves and come back with some serious answers 🙂 btw, my hs fan blows outward.
 
As far as I can decipher, if you have fans blowing on a heatsink, the heat will disapate more effieciently, as the airflow carries away the heat. Just look at air-cooled engines. Same thing. :thumbsup:
 
Originally posted by: MisterChief
As far as I can decipher, if you have fans blowing on a heatsink, the heat will disapate more effieciently, as the airflow carries away the heat. Just look at air-cooled engines. Same thing. :thumbsup:
Click to expand...

that is not always the case. Heat sinks are meant to get rid of heat very quickly. Any direction of airflow is good. Certain obstructions in your case cause one airflow direction to be more beneficial than the other.


The human body example does not apply since the cooling effect is caused by the evaporation of sweat, and this evaporation is accelerated by airflow. I pray to god that your cpu is not sweating, otherwise, you have a fried system.
 
Originally posted by: blinky2004
Originally posted by: MrControversial
Swallow.
Click to expand...

Not spit....
Click to expand...


LMAO. Yeah I would say try the fan each way and see what works best for your temps. I know for the XP-90 it is recommended to have the fan blowing on the heatsink(but never spitting)😉
 
Elevated turbulence increases convective heat transfer. Air is more turbulent in the exhaust of a fan than the intake. Therefore, blow.
 
ideally, this is what you do:

o \ /o/
\ \ / /
\ * /

o=case fan
/ and \=air guides
*=HSF and CPU

you have the HSF blow on the CPU and have the Case fans as exhaust
 
ideally, this is what you do:

o \ /o/
\ \ / /
\ * /

o=case fan
/ and \=air guides
*=HSF and CPU

you have the HSF blow on the CPU and have the Case fans as exhaust. Of course, you'd have top have more than two case fans for this to be feasible
 
Installed the Thermaright XP-90 last night. The difference is amazing, with my factory P4 fan, I was getting up over 60C running half-life about an hour, now cant get over 45C!!!! Highly recommended and easy to install. Using it with panaflow 92 high speed fan.
 
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