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討論區規矩與守則
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The recommended fan speed will depend on the system configuration. Clearly turbo will give you better performance but it will be louder.
CPU Coolers that mount Fan facing Motherboard, yes push air towards Motherboard so it cools RAM and VRMs as well.
No stock CPU cooler "pulls" they "blow"
When a fan creates a vacuum, I'm pretty sure it's pulling the air... lol
Well then, this set up is wrong.
The most important thing is to set up your case so that the airflow works efficiently, there's no good clearing the heat from the CPU if it just sits and swirls round the cooler instead of being effectively exhausted away from the case.
To do this the most effective way, you want negative pressure, so more air is pulled out than enters, this has the downside that dust will be pulled in from every crack, but it will run a couple of degrees cooler than positive, which has more intakes than exhaust, this also has the benefit of trying to push air out of every crack so there will be less dust in the case, but will run a couple of degrees warmer as air will tend to circulate more.
Both situations are based on intakes having decent dust filters in place.
That way cold air intake from front fans provides cool air to CPU fan and graphics cards and everything flows from front to back and top where hot air naturally gathers inside tower case.
Hence front and bottom slots for intake, back and top slots for exhaust.
thats simply not true these small cpu fans do not create enough of a vacuum effect to pull enough air away from a hot heatsink you would need much much more vacuum. thats why they sell them blowing on cpu at all times. THIS IS FOR CPU FAN ONLY. in addition, the cpu fan in most cases also provides airflow to the vrm section of the motherboard.
you can and should exhaust it out of the case but cpu heatsink needs POSITIVE air pressure
But given that a fan has to pull pretty much the same amount of air as it pushes, it won't make much of a difference to the heatsink, impact on secondary components is another matter.
Also having fans blow towards the ram will cause vortex's in the typical case lowering overall cooling efficiency.
of course if you have a tower cooler with 2 fans one has to push and one blows (pulls) otherwise youd have 2 fans blowing into each other. and thats just boosting the vacuum by blowing into a "pulling" fan which works
the op stated "pulling or pushing air towards the cpu" and its been stated either is fine (which is not true).. had the op stated towards the back or front of the case indicating a tower cooler i wouldnt even have commented but in this case mis-information could lead to hardware failure and not just simply the perfect airflow setup with a tower cooler
well it pretty much is as all the air you push has also be pulled in the first place and that pushed air only can come from the front. if the entire front is covered be the fan (as with most cpu coolers) the air that is pushed has to come from the heatsink.
????
Again, the vacuum statement, this is exactly why it doesn't work properly as you might expect.
When you try it, it will seem to work at first, until the CPU and VRMs are under heavy loads, it will get much hotter compared to blowing the air towards the Motherboard, otherwise the VRM is never receiving any airflow what so ever when you pull air away from the CPUs direction.
But yea if you are using any tower type cooler, best is push air (if only single fan) towards the rear exhaust fan area, that exhaust fan will help in it's own way to pull hot air out the case overall.
I wouldn't rely on a single exhaust fan though, having them fill the top of the case to exhaust hot air out of the case helps as well.