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Will my cpu fry...

M

Mr Smiley

Senior member
I say this because I want to switch my hsf fan around but don't wanna fry anything. Do you think this would be alright? The fan is pointing into the hsf instead of blowing out and I don't know if it should be doing this. Im using a hsf that was already installed on my comp. when I bought it. Here is a pic of the comp. Dont pay attention to the wiring, Its not like that any more. You can't really see the sides of the hsf but it has holes across it. Do you think I have the right setup or do you think I should try switching the fan around?
 
If you don't have one of the newer heatsinks that can have the fan going either way chances are you'll cook your processor. What HSF do you have now? If it's the retail one (came with the processor) then do NOT flip it around. You'll want a heatsink with thermalpipes, such as the Thermalright XP-90, XP-120 and such.
 
The fans usually blow in as yours is installed. If things are working fine, I would leave it alone. Some people do turn the fan around to blow out, but it seems that there is really no differnce in cooling' I'd say, it's fine the way it is.
 
Ok, I was thinking since it was blowing the air into the hsf, and since I dont have any exhaust type fans over at the front of the case, alot of hot air would be trapped near the front. That could account for the really high video card temps and it feels like my psu is getting a little hot. I do have a hole on the side of the case near the hsf so I thought if I switched the fan around it would just blow right out of the case. Im thinking about getting a Zalman CNPS7000B-CU but do you think it would fit in that cramped little space there? I have no clue what type of hsf I have installed on it right now. The fan is a 80mm cooler master so it could be a cooler master hsf... not sure. But thanks for the replies.
 
Find out who installed the current heatsink and find out what it is. If it's not one of the heatsinks with the thermalpipes in it, then it will function best with air blowing over it. The heatsinks with the thermalpipes move the heat better and the fans can work either way on those.

As for "It would only fry if u took it off while it was on..." I wouldn't bank on that. Without knowing which heatsink is installed making that kind of statement is just moronic.

I tried my XP-120 with the fan blowing onto it as well as pulling off of it. BEFORE I did that, I read reviews where they did just that. I get lower RPM's on the fan with it pulling off of the heatsink, and maintain the same, if not lower, temps. My case temp is a bit better than with it blowing onto the heatsink, as is the processor temps. I wouldn't DREAM of doing this on a heatsink that didn't have heatpipes or wasn't designed to function that way.
 
priority number 1 if you truly have a hot air stuck in front of case problem: Open up the front via modification and/or add a fan in the front.

Number 2. Flipping the fan only works if a.) you have a decent HS, b.) you have a 120mm exhaust fan - most likely all of the above. Since you only have an 80 as exahust, you really need to be gettting a front 80mm intake. If you had a 120 in the back, then things might be a little different as 120mm fans have more flux - that is, they move similar amounts of air, but over a wider area normal to the fan.
 
Originally posted by: Cawchy87
I popped a kernal of corn on a 150 mhz chip with no heatsink on it.
Click to expand...

ROFL! 😀

Seriously though....
I wouldn't put in an intake fan until you get your wiring under control. It will have little or no effect cause airflow is blocked by all the wires in the middle of your case.

Set aside some time to unplug all your wires and carefully reroute them so you can free up some airflow.
Here's a pic inside mine. pic

After that fresh air intake can improve your cooling.
 
Question:
Which type of fan heat sink is better, "air pushing" or "air pulling"?

Answer:
According to our tests, the induction type(air pulling) showed better results the the expulsion type(air pushing). This is because we used an intake cover to draw air through the lower part of the heat sink for more heat dissipation from the lower part of the fins. However, if some other heat source is located near the heat sink, heated air would come into the heat sink and affect the thermal performance, so the choice must be made depending on the environment.


pulled off alpha's heatsink website.. i generally push in because ambient air near the sidepanel is typically cooler than air pulled off the mobo.

Do some tests and get back to us 🙂

(just power your system off before you switch one way or the other 😛)
 
I wouldn't reverse the fan unless the heatsink is known to work as well, if not better, that way. Otherwise you will risk your chip. Processors are more expensive than new heatsinks, even the XP-120 is less than a new processor...
 
Sorry I took so long to post. Well... Im still not sure if its safe to turn the fan around. Im not sure if your being sarcastic or not(sorry im alittle slow 😉). Anyway, ill shoot the maker an email and ask them what type of hsf it is. Also, That picture isn't recent. That was a picture When I installed my 6800gt. I replaced the back 80mm fan and stuck a nice antec 92mm and stuck the 80 in that front fan cage thing. And the wires look alot better. Anyway, If I find out any info or if I can find the cable to hook up my digital camera to my comp I will post some more stuff.
 
I don't think your cpu will fry at all without paste. I tried several scenarios on mine. apply paste then scrap them offf; leave lots of paste on; leave a thin layers of paste on. The temps are all about the same. the best (within 2 degrees) is the last one, leaving a thin layer on. My cpu heatsink is mirro-finish; hence, the small temp difference.

I also found that fan speed makes greate temp difference. Increasing my outtake fan from 900 rpm to 1900 rpm, my athlon 64 300+ cpu and nforce4 mb temps dropped about 4 degrees each to now 34/36 idel and 43/39 load(prime95).

As for your blowing and sucking options, don't be lazy, just try both. Why would it not be safe? Your hesistance to try and persistence in others' opinion only won't set your mind to ease at all.













 
Really it won't hurt anything to try, but the only heatsinks I have ever seen do better sucking instead of blowing were Swiftec and Alpha. (without a duct, that is)

As long as you don't remove the fan you will be ok.
 
I've been too busy between work and other things to get into it. Tomorrow evening might be a good time to get into it. Especially since I have tv recording on that system tonight, and tomorrow I need to replace the WD drives for some Seagates. I might be able to do some of the work outside the case, since I still have the packaging from the XP-120. With the cutout in it, I could just mold around that. Of course, when I have the case open replacing the drives, I'll be able to make notes on how it needs to go.

I'll post up pictures with the results, when I have something to post.

A
 
Akira 34 wrote:

I'll post up pictures with the results, when I have something to post.
Click to expand...

________________________

Don't let me "pressure you". But I'm eager to see how the design sucking air off the motherboard and into a duct works. I am optimistic. You turn the biggest source of duct-leaks into the sole intake source, and I think it makes sense.

I should probably zip it up until you post your pictures and / or results.

 
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