is it possible to increase rpm?

keepaf1 · 18-November-05, 06:59 PM

not sure if this has been asked before so here goes

is there any way to increase the rpm of a 120mm fan currently at 1200rpm ?
it doesnt matter if it has its life shortened.
the reason i ask is that it looks good in my rig but i need more cfm

lAnonymousl · 18-November-05, 07:30 PM

Sure you can overvolt them, but you'd need a power supply with variable voltage adjustment over 12V. Easier to buy a new fan....they are among the cheapest parts on a PC.

keepaf1 · 18-November-05, 07:34 PM

Quote:

Originally Posted by lAnonymousl


	Sure you can overvolt them, but you'd need a power supply with variable voltage adjustment over 12V. Easier to buy a new fan....they are among the cheapest parts on a PC.

thanks man.just didnt want to get any more fans as i am in deeep ****e over how much i have already spent modding my rig

Splitter · 18-November-05, 07:41 PM

He's right though. For the cost of a 12 piece chicken dinner, you could be the proud owner of a brand spanking new variable speed fan.

keepaf1 · 18-November-05, 08:00 PM

Quote:

Originally Posted by Splitter


	He's right though. For the cost of a 12 piece chicken dinner, you could be the proud owner of a brand spanking new variable speed fan.

bugger! i am crazy about chicken.
oh well - if it has to be it has to be.
thanks guys

PurpleDiamond · 19-November-05, 12:14 PM

As mentioned above, you can try to overvolt it. Check if your fan can handle 17V. connect the + to the 5V rail and the - to the -12V. DON'T do this while your fan is in your case and DON'T do it while anything else is plugged in. Test it on a spare PSU if possible.
You have to be willing to accept the fact that it may fry your fan.

Wordbiker · 19-November-05, 01:27 PM

There's a very funny (but working) guide on doing just this at Afrotech. Make sure and check out the rest of the site for some good laughs...although they are not good and wholesome mods for the squeamish.

goodman123 · 21-November-05, 06:59 PM

Quote:

Originally Posted by Wordbiker


	There's a very funny (but working) guide on doing just this at Afrotech. Make sure and check out the rest of the site for some good laughs...although they are not good and wholesome mods for the squeamish.

Great link
humm i wonder if i get a 80 mm fan ouside the case & try to juice it with 24 volt ...it meant just raise into the air & fly ...there goes a flying saucer

Nerdz · 21-November-05, 07:26 PM

ive done that before, it was loud but gave a pretty good CFM, then it started burning...

oh well before that My finger got chopped off (or in a million bits..)

keepaf1 · 22-November-05, 02:21 AM

Quote:

Originally Posted by Wordbiker


	There's a very funny (but working) guide on doing just this at Afrotech. Make sure and check out the rest of the site for some good laughs...although they are not good and wholesome mods for the squeamish.

read the site (pretty cool) and will give it a go.i have a spare couple of old fans and psu.never know-could end up with a flying OR frying pc

18-November-05, 06:59 PM		#1 (permalink)
keepaf1 Apex Tech Fanatic	is it possible to increase rpm? not sure if this has been asked before so here goes is there any way to increase the rpm of a 120mm fan currently at 1200rpm ? it doesnt matter if it has its life shortened. the reason i ask is that it looks good in my rig but i need more cfm

19-November-05, 12:14 PM		#6 (permalink)
PurpleDiamond Apex Tech Maniac Supreme	As mentioned above, you can try to overvolt it. Check if your fan can handle 17V. connect the + to the 5V rail and the - to the -12V. DON'T do this while your fan is in your case and DON'T do it while anything else is plugged in. Test it on a spare PSU if possible. You have to be willing to accept the fact that it may fry your fan. Last edited by PurpleDiamond; 19-November-05 at 12:21 PM..

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18-November-05, 07:30 PM		#2 (permalink)
lAnonymousl The Who? Hoe	Sure you can overvolt them, but you'd need a power supply with variable voltage adjustment over 12V. Easier to buy a new fan....they are among the cheapest parts on a PC.

18-November-05, 07:41 PM		#4 (permalink)
Splitter Foe's Hoe	He's right though. For the cost of a 12 piece chicken dinner, you could be the proud owner of a brand spanking new variable speed fan.

19-November-05, 01:27 PM		#7 (permalink)
Wordbiker Apex Tech God	There's a very funny (but working) guide on doing just this at Afrotech. Make sure and check out the rest of the site for some good laughs...although they are not good and wholesome mods for the squeamish.

21-November-05, 07:26 PM		#9 (permalink)
Nerdz Sir Knight of Spamalot	ive done that before, it was loud but gave a pretty good CFM, then it started burning... oh well before that My finger got chopped off (or in a million bits..)