how much watts u think i need

snibs · 06-14-2008, 05:33 PM

hey guys im thinking of doing some mods to my computer case i come across a site that sells side pannels and i see a panel with 2 120size fans on it and i was thinking about cuting me a hole ontop of my case for anouther 120 and i was wondering with 3 120 fans how much watts would it use on my psu

MrChooks · 06-14-2008, 08:53 PM

According to the Antec site - their 120mm fans (at full speen / power 1720 rpm) draw 0.201amps on a 12 v DC supply - so that would be about 2.4watts.

So 3 would draw about 7.5 watts - assume the fans on the web site are a bit on the "C&N" side - allow 10-15 watts for all 3 running

dai · 06-15-2008, 01:18 AM

you would have to be grossly underpowered before the fans would cause a power problem

06-14-2008, 05:33 PM	#1 (permalink)
snibs Registered User Join Date: Jun 2008 Posts: 9 OS: windows xp	how much watts u think i need hey guys im thinking of doing some mods to my computer case i come across a site that sells side pannels and i see a panel with 2 120size fans on it and i was thinking about cuting me a hole ontop of my case for anouther 120 and i was wondering with 3 120 fans how much watts would it use on my psu

06-14-2008, 08:53 PM	#2 (permalink)
MrChooks Registered User Join Date: Apr 2008 Location: Sydney, Australia Posts: 251 OS: Windows XP Home SP 3 My System	Re: how much watts u think i need According to the Antec site - their 120mm fans (at full speen / power 1720 rpm) draw 0.201amps on a 12 v DC supply - so that would be about 2.4watts. So 3 would draw about 7.5 watts - assume the fans on the web site are a bit on the "C&N" side - allow 10-15 watts for all 3 running

06-15-2008, 01:18 AM	#3 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 41,845 OS: vista 32x ultimate retail	Re: how much watts u think i need you would have to be grossly underpowered before the fans would cause a power problem __________________