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Cooling for your computer (noob needs help plz)
ill be building my first puter soon, im getting a intel processor, and i need to know if it will come with its own fan? the tower im getting comes with fans, i guess my question is hehe, do i need to get a seperate cooling for my processor? and also will the three fans that come with the tower be enough for all the other stuff? thnks
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It depends on what your processor is sold as. All Retail boxes for processors come with a cooler. However, if its an OEM then it won't come with its own cooling.
3 fans probably won't be enough to cool your whole case. Most cases now come with multiple vents. The most important airflow is front to back. Having a fans in the front providing intake and creates an unblocked air flow to Hard Drive, Processor, and Video card is good cooling. Also rear fans providing outtake.
3 case fans not enough? Only if your going to be overclocking, which you probably shouldnt if this is your 1st build. your 3 case fans will be fine as long as they are going the right direction: front to back, any fans on top should act as an intake btw. your CPU should come with a heatsink and fan as long as its a retail 'boxed' CPU, a white box or OEM CPU will not. The stock fan is just fine, again, if your not overclocking. Be advised that if you break the seal between the CPU and heatsink after using it, it will become less efficient if not cleaned and re-greased.
"Good? Bad? I'm the guy with the gun."
3 fans are enough for your build, your not going to be overclocking since your not educated on that yet if this is your first build.
The best 3 fan setup to remove heat and keep any case cooled is what I call the 3 fan pyramid effect. One fan in front that pulls air in, and a fan on the top which pulls air out. The back fan should be a 120mm if not 80 is fine, but the back fan is pushing air out.
The above was tested by me years ago when P4's ran so hot and hardware got hotter then todays tech. I did this setup and researched it on my own by trial and error for a PC hardware site. The reason this setup works so well is that it creates a cyclone effect inside the case and pulls air back and up evenly. It works on the principle of pressure. Take a hose for instance and apply your thumb at the end of the hose and what happens to it? The pressure increases and the water moves out faster.
Now with the same setup if you balance the rpm's of the fans in this setup it creates this same effect, by pulling and pushing air against itself to create a faster air moving stream.
But please note this about my setup, your results will vary depending on how clean your wiring is and case design, however; this should work in any setup no matter what. The setup is dependent on air flow per fan and rpm speeds. You will need to test this with measuring your inside case temps with varying rpms and cfm's. But below is a small guide that is useful. I run an open clean air setup on all my desktop designs now days except HTPC. So even though I wrote this info years ago I am not able to give a 100% correct cfm to rpm data sheet you can use. I had this info someplace for years and misplaced it.
Most people unknowingly will add many fans in a case going all sorts directions, aka pushing air in or out. With varying ranges of rpm's on those fans also. People think by just having so many extra fans will help, but really it is defeating the purpose of air movement if the setup is wrong. You can have 3 fans pulling air in a case but have 2 small fans push air out or 1 big 120mm push air out will overheat a case. The reason is the air movement coming in is greater then going out.
One other bit of info I have witnessed when I did these experiments was that having fans work harder against each other will cause the PSU (power supply unit) to flucuate when hooked up to a measuring devices (expensive). Testing had shown the PSU's had varying degrees of stress when fans pushed harder or worked against one another. Most often the stress was caused from the fans having to work harder, thus pulling more power from the PSU and increasing stress on it's components. So fans had in fact shown that a PSU can cause more spikes in ripple and draw when they are working harder against each other. When I say working harder against each other the fans are pushing more air out then what is being brought in by the other fans or vice versa.
To clearify a bit if you would take a fan and stress it by holding paper on it's fins you create a power draw and the power unit will stress to maintain an accurate power flow to the fan. Causing ripple tollerance changes on the way and uneven voltage changes.
It is all about balance. The last thing I will say is look at your fans rated air flow. Try and make it so the number total going out is slightly more by around 5-8%. So if you got a total inflow of 70 cfm you will want the total cfm of your output fans at least doing 74 cfm, ideal is 76 cfm of outflow in this example.
Good luck.
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This is reversed. Hot air rises, you want the fans at the top to be exhaust.
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