Computer Case Fans

# Thread: Computer Case Fans

1. ## Computer Case Fans

Where can I get some cheap and quiet case fans?

Is 26dBA quiet?
http://www.anitec.ca/?mode=product_detail&pid=389

20dBA Fan.
http://www.atic.ca/index.php?page=LongDesc&sku=04740

Is that 6dBA discrepancy noticeable when you're sleeping at night?

2. you leave your computer running when you sleep at night?

3. princess auto has computer fans, that are cheap!

4. i'd go with the vantec.. the sunons are pretty cheap and 26db gets annoying.

If you can find them, try getting some panaflo fans.. they're really good and quiet. However, I think they're pretty expensive.

5. Yeah, I leave my computer running at night. I leave it on few times a week to download movies and do virus scans.

How loud is 20dBA and 26dBA? If it is not possible to describe it or something, can you give me some analogies? Also, what's a 3pin fan and a 4pin fan?

6. The dB scale is logarithmic, and so an increase in 3 dB is a doubling of relative loudness. The relative power of each in watts is 20 dB=100W and 26 dB=400W. If you're refering to dBSPL, which you probably are, the equation is dBspl=20log(p1/p0) where p1 and p0 are the sound pressure in dynes per square metre.
In terms of real-world scenarios, the threshold of hearing is typically 0db. An anaechoic chamber is somewhere around 8-10dB, rustling leaves are around 10-12, and a quiet recording studio is around 20 db. A quiet whisper measured from 5 ft is around 25-28 db, so depending on how light a sleeper you are, could be quiet enough. As far as computer fans go, even 26dB is pretty quiet, although I've found that a lot of the times its not the fans, but the sounds of the whirring hard-drives that keeps me awake.
A 3-pin fan (I think) has a positive, negative, and ground wire, where a 4-pin has 2 positive, and 2 negative. Why you need 2 of each, I'm not sure...
Anyway, hope that helped.

If you're running XP, you can change the power settings so that the HDD's will shut off after a certain period. This is helpful, as HD's have a certain number of hours of life. Or you can spend a bit more money and have fans that will only run when the internal temp reaches a threshold, and shuts off when it cools down.

7. if it bothers you that much then dont have a case fan.......I dont have one and My computer hasnt been shut down for months..........guess it depends on if it heats up or not, my processor fan is all I need....I built this one last spring and it sees no down time at all.

8. Stick it in a Coleman cooler, the type you plug in to keep cool. No fans and it's as quiet as a mouse. Looks pretty cool , pardon the pun ( and no I didn't mean me) sitting in the middle of your living room.

9. Spend the extra bucks and get a multi-fan controller that fits into a slot on
the front of the computer.

Then you can tune down the fans to whatever combination of noice and
airflow you want.

10. People turn their computers off???

11. what's a computer?

12. http://www3.telus.net/superstar/cputmep.jpg

That is the temp of my computer when I'm just browsing the internet and listening to music. I don't have any case fans. I have a cpu, power supply, and video card fan.

Do you guys think I should get those fans? Or my system should be fine? I don't want the heat inside my computer to shorten the lifespan of my computer.

13. i found asus probe to be totally inaccurate on my a7n8x motherboard. i use motherboard monitor 5 instead.

50C is pretty hot for idle, or close to idle as internet browsing is. it isn't so hot you have to worry about it, but just for reference i have a xp 1700+ oc'd to 1900MHz (increase of 500 MHz) and my max temperature under stresstesting is 46C, and I don't have all that great cooling, 2 fans and a decent heatsink.

14. The easiest and cheapest way to get quiet case fans is to buy normal fans and run them at 5V instead of 12V (swap the red and yellow wires on the power connector). If you're concerned about reduced air flow, just install more fans. They will last longer too.

15. Originally Posted by kungpow
http://www3.telus.net/superstar/cputmep.jpg

That is the temp of my computer when I'm just browsing the internet and listening to music. I don't have any case fans. I have a cpu, power supply, and video card fan.

Do you guys think I should get those fans? Or my system should be fine? I don't want the heat inside my computer to shorten the lifespan of my computer.
that depends if you have an Intel CPU or an AMD CPU.

AMD's run much hotter than the intel's

Either way you're fine until your computer starts shutting down randomly due to heat.

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