Whats more quiet. 2-3 reg fans or 5 'quiet' ones?

Tonto · 03-12-03, 10:15 PM

Building a new system and wondering how fan noise adds up.

Found a good deal on some Vantec Stealth fans so was wondering if getting five of these (replace the generic ones) would be quieter than two (standard) or three (if needed) regular ones.

Total airflow numbers work out pretty close but thinking that the more spread out five fans would be better at cooling and noise doesn't 'add' up like numbers so might be more quiet.

I'll wait until I get the system up and see how the temps are, but just toying with the idea now.

Thanks
T.

stool · 03-12-03, 10:32 PM

Welcome to the forums.

Do a search and you'll get some good information. There have been several posts about cumulative fan noise. Consider this. Larger fans(120mm or 92mm) almost always are somewhat quieter than smaller fans like 80mm. You want to try to strike a good balance between airflow and noise.

Tomac · 03-13-03, 01:39 PM

I discovered that with my case running 2x92mm & 3x80mm Stealth fans is definitely quieter than running 3x80mm regular fans. Also, even when I added 2x92mm regular fans I don't seen any improved cooling over the lower cfm airflow of the Stealth fans due to negative case pressure. YMMV, HTH...
Tomac

Tonto · 03-13-03, 07:20 PM

Thanks for the info. I think I'll give it a try as my old PC is a real whiner and for the games I play quiet is much better.

T.

CrashOveride · 03-13-03, 07:54 PM

bacuse of the way Dbs are added up it is quiter to have more quiter fans in most cases... when you have like 3 30Db fans it ends up being just over 30Db like 33Db or something (not an exact number or anything but it dosnt double or anything)

I.M.O.G. · 03-13-03, 08:05 PM

I thought I read a rule of thumb that said if you have a fan of 30 dB's then each additional fan is plus 3 dB's... but this isn't like doing the math, and it ISN'T truly accurate either, but it gives you a very rough idea of how much louder it is.

Tonto · 03-13-03, 08:29 PM

Found this link mentioned in a post while searching around before
http://ao.tripod.com/decibel.html

The second fan adds 3db's but then it flattens out (logarithmic) for extra fans.

The fans are on order

T.

I.M.O.G. · 03-13-03, 08:41 PM

Thanks tonto.

Wasn't "tonto" the name of someone's horse? Like an indian chief or zorro or SOMEBODY?

Tonto · 03-13-03, 08:50 PM

Hehe, close but no cigar.

The Lone Ranger.

Silver was the horse (Hi Yo Silver, away!)
Tonto was his Indian companion (the rangers.. not the horse).

CrashOveride · 03-13-03, 08:58 PM

lmao!!!

tonto was the name of whats his name's sidekick- i forget but he siad "HiHo silver! away" and he was a cowboy... tonto was indian... i wonder if its any conicidence that tonto means stupid in spanish (or is it tanto?) i mean the show is kinda old... maybe they were making hte indian guy look stupid

OH! i remember its the Lone Ranger's side kick- hey isnt that odd hes the Lone ranger with a sidekick.. wtf?

Tomac · 03-13-03, 10:54 PM

Off-topic (givin' away my age here):
What was the name of Tonto's horse?
Where did the Lone Ranger get the material to make his mask?
Why is he called The Lone Ranger?

And for 50 Bonus Points (I will send $5 to the first person who can answer this correctly): Remember the TV series "The Man from U.N.C.L.E."? U.N.C.L.E.'s nemesis organization was called T.H.R.U.S.H., what does the THRUSH acronym mean?

Tomac

CrashOveride · 03-13-03, 11:10 PM

man i used to love that show! my dad (werido acutaly) recorder like almost all the episodes... but i dont know the aswer to any of those

ill guess though

1 damn iti cant think no guess
2 from an indian chief- tonto's tribe (i know he was offerd a marriage right?)?
3 because he lost his first partner- no he um... i dont knwo

lolz so much for gussing

Tomac · 03-13-03, 11:18 PM

Nice try but no cigar (or peace pipe or wampum or whatever).
Next victim, er, I mean "contestent"?
Tomac
PS- I will give the answers myself if no one can provide them within a reasonable amount of time...

CrashOveride · 03-13-03, 11:32 PM

can you PM me them? dot worry i wont give them to any one

im actually curiouse i loved that show... and the old school batman in grey tights you know? i used to have that batcar but it was hotwheels! it was so cool...

Tonto · 03-15-03, 03:56 PM

Silver was the horses name.

No idea about the others though.

Curious about the T.H.R.U.S.H. thing so did a search and hit this....so who needs UNCLE (did find the real answer too but I cheated)

http://www.thrushcream.com/

T.

Tomac · 03-15-03, 04:22 PM

Yech! That's rude, crude and socially unacceptable!

What's the THRUSH answer and where did you find it? (PM me).
Thx!...
Tom

sirtoby · 03-15-03, 05:03 PM

This is a post I made earlier in a similar thread, hope it clears it up for you..

This will have a mathematical approach ..

dB works on a logarythmic scale, so this means that for instance

0 dB = 10^0
10 dB = 10^1
20 dB = 10^2
50 dB = 10^5

so as you can see, 20 dB is 10^2=10*10=100 , so 20 dB is 100 times more intense than 0 dB which is 10^0=1 and 10 times more intense than 10 dB, 10^1=10

So in this case if the first one is 25 dB , 10^2.5 and the other one is 10^2.8

10^2.5 = 316
10^2.8 = 630

630/316 = ~2

So as you can see, it is 2 times more intense.

Now, if you apply this to a case where you want to know how noise adds up.

For instance, if it'd be three fans, 25 dB each it would be

10^2.5 * 3 = 10^x

x = 2.97 => 29.7 dB

modenaf1 · 03-15-03, 05:07 PM

5 probably moves more air and is quieter

03-12-03, 10:15 PM	Thread Starter #1
Tonto Registered Join Date: Mar 2003	Whats more quiet. 2-3 reg fans or 5 'quiet' ones? Building a new system and wondering how fan noise adds up. Found a good deal on some Vantec Stealth fans so was wondering if getting five of these (replace the generic ones) would be quieter than two (standard) or three (if needed) regular ones. Total airflow numbers work out pretty close but thinking that the more spread out five fans would be better at cooling and noise doesn't 'add' up like numbers so might be more quiet. I'll wait until I get the system up and see how the temps are, but just toying with the idea now. Thanks T.
	QUOTE Thanks

03-12-03, 10:32 PM	#2
stool Senior Member Join Date: Dec 2000 Location: Albany, NY	Welcome to the forums. Do a search and you'll get some good information. There have been several posts about cumulative fan noise. Consider this. Larger fans(120mm or 92mm) almost always are somewhat quieter than smaller fans like 80mm. You want to try to strike a good balance between airflow and noise. __________________ My Heatware
	QUOTE Thanks

03-13-03, 01:39 PM	#3
Tomac Registered Join Date: Mar 2003 Location: Caldwell, Idaho	I discovered that with my case running 2x92mm & 3x80mm Stealth fans is definitely quieter than running 3x80mm regular fans. Also, even when I added 2x92mm regular fans I don't seen any improved cooling over the lower cfm airflow of the Stealth fans due to negative case pressure. YMMV, HTH... Tomac
	QUOTE Thanks

03-13-03, 07:20 PM	Thread Starter #4
Tonto Registered Join Date: Mar 2003	Thanks for the info. I think I'll give it a try as my old PC is a real whiner and for the games I play quiet is much better. T.
	QUOTE Thanks

03-13-03, 07:54 PM	#5
CrashOveride Member Join Date: Jun 2002 Location: Beijing, China	bacuse of the way Dbs are added up it is quiter to have more quiter fans in most cases... when you have like 3 30Db fans it ends up being just over 30Db like 33Db or something (not an exact number or anything but it dosnt double or anything) __________________ .................................................. ......................Just too busy with life ...........................................Team.32.Mentor........................................RED.BELT.Ubercloxx0r ..............................You.should.always.keep.an.open.mind.help.can.be.found.in.the.most.unlikly.places. .....AIUHB0252@2300mhz.SP-97~Abit.NF7-S~512.RAM@fast.timings~9700Pro.w/.copper.HSF.~.2.monitors .................................................. ..Windows XP because I have conditions ....Fold.for.[OC]FoldingNinjas!!!....You .would.be.amazed.at.what.a.group.of.intelegent.peo ple.can.overlook ...............................................All.blanket.statments.are.false\|Nothing.is.absoloute. ............................Don't.Let.ThermalTake.Your.Money~\|~Are.You.Into.Th at.Hacky.Stuff? AKA:supaiku .................................................. ........Can.you.find.the.ninja.in.my.avatar?!?!
	QUOTE Thanks

Whats more quiet. 2-3 reg fans or 5 'quiet' ones?

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03-13-03, 08:05 PM	#6
I.M.O.G. Homeless Leader Join Date: Nov 2002 Location: Rootstown, OH	I thought I read a rule of thumb that said if you have a fan of 30 dB's then each additional fan is plus 3 dB's... but this isn't like doing the math, and it ISN'T truly accurate either, but it gives you a very rough idea of how much louder it is. __________________ The OC Forums Way We are a team. We are a community. We are a fellowship made strong by mutual respect and shared dedication to the task of enriching all who come here. The OC Forums Thank You Thread Put your computer to work for our OC Forum Teams! Try out our POST TEMPLATES, they save you time answering common questions! I spend half my money on CPUs, GPUs, and Liquid Nitrogen. The other half I waste.
	QUOTE Thanks

03-13-03, 08:29 PM	Thread Starter #7
Tonto Registered Join Date: Mar 2003	Found this link mentioned in a post while searching around before http://ao.tripod.com/decibel.html The second fan adds 3db's but then it flattens out (logarithmic) for extra fans. The fans are on order T.
	QUOTE Thanks

03-13-03, 08:41 PM	#8
I.M.O.G. Homeless Leader Join Date: Nov 2002 Location: Rootstown, OH	Thanks tonto. Wasn't "tonto" the name of someone's horse? Like an indian chief or zorro or SOMEBODY? __________________ The OC Forums Way We are a team. We are a community. We are a fellowship made strong by mutual respect and shared dedication to the task of enriching all who come here. The OC Forums Thank You Thread Put your computer to work for our OC Forum Teams! Try out our POST TEMPLATES, they save you time answering common questions! I spend half my money on CPUs, GPUs, and Liquid Nitrogen. The other half I waste.
	QUOTE Thanks

03-13-03, 08:50 PM	Thread Starter #9
Tonto Registered Join Date: Mar 2003	Hehe, close but no cigar. The Lone Ranger. Silver was the horse (Hi Yo Silver, away!) Tonto was his Indian companion (the rangers.. not the horse).
	QUOTE Thanks

03-13-03, 08:58 PM	#10
CrashOveride Member Join Date: Jun 2002 Location: Beijing, China	lmao!!! tonto was the name of whats his name's sidekick- i forget but he siad "HiHo silver! away" and he was a cowboy... tonto was indian... i wonder if its any conicidence that tonto means stupid in spanish (or is it tanto?) i mean the show is kinda old... maybe they were making hte indian guy look stupid OH! i remember its the Lone Ranger's side kick- hey isnt that odd hes the Lone ranger with a sidekick.. wtf? __________________ .................................................. ......................Just too busy with life ...........................................Team.32.Mentor........................................RED.BELT.Ubercloxx0r ..............................You.should.always.keep.an.open.mind.help.can.be.found.in.the.most.unlikly.places. .....AIUHB0252@2300mhz.SP-97~Abit.NF7-S~512.RAM@fast.timings~9700Pro.w/.copper.HSF.~.2.monitors .................................................. ..Windows XP because I have conditions ....Fold.for.[OC]FoldingNinjas!!!....You .would.be.amazed.at.what.a.group.of.intelegent.peo ple.can.overlook ...............................................All.blanket.statments.are.false\|Nothing.is.absoloute. ............................Don't.Let.ThermalTake.Your.Money~\|~Are.You.Into.Th at.Hacky.Stuff? AKA:supaiku .................................................. ........Can.you.find.the.ninja.in.my.avatar?!?!
	QUOTE Thanks

03-13-03, 10:54 PM	#11
Tomac Registered Join Date: Mar 2003 Location: Caldwell, Idaho	Off-topic Quiz (Chance to Win Cash!) Off-topic (givin' away my age here): What was the name of Tonto's horse? Where did the Lone Ranger get the material to make his mask? Why is he called The Lone Ranger? And for 50 Bonus Points (I will send $5 to the first person who can answer this correctly): Remember the TV series "The Man from U.N.C.L.E."? U.N.C.L.E.'s nemesis organization was called T.H.R.U.S.H., what does the THRUSH acronym mean? Tomac
	QUOTE Thanks

03-13-03, 11:10 PM	#12
CrashOveride Member Join Date: Jun 2002 Location: Beijing, China	man i used to love that show! my dad (werido acutaly) recorder like almost all the episodes... but i dont know the aswer to any of those ill guess though 1 damn iti cant think no guess 2 from an indian chief- tonto's tribe (i know he was offerd a marriage right?)? 3 because he lost his first partner- no he um... i dont knwo lolz so much for gussing __________________ .................................................. ......................Just too busy with life ...........................................Team.32.Mentor........................................RED.BELT.Ubercloxx0r ..............................You.should.always.keep.an.open.mind.help.can.be.found.in.the.most.unlikly.places. .....AIUHB0252@2300mhz.SP-97~Abit.NF7-S~512.RAM@fast.timings~9700Pro.w/.copper.HSF.~.2.monitors .................................................. ..Windows XP because I have conditions ....Fold.for.[OC]FoldingNinjas!!!....You .would.be.amazed.at.what.a.group.of.intelegent.peo ple.can.overlook ...............................................All.blanket.statments.are.false\|Nothing.is.absoloute. ............................Don't.Let.ThermalTake.Your.Money~\|~Are.You.Into.Th at.Hacky.Stuff? AKA:supaiku .................................................. ........Can.you.find.the.ninja.in.my.avatar?!?!
	QUOTE Thanks

03-13-03, 11:18 PM	#13
Tomac Registered Join Date: Mar 2003 Location: Caldwell, Idaho	Nice try but no cigar (or peace pipe or wampum or whatever). Next victim, er, I mean "contestent"? Tomac PS- I will give the answers myself if no one can provide them within a reasonable amount of time...
	QUOTE Thanks

03-13-03, 11:32 PM	#14
CrashOveride Member Join Date: Jun 2002 Location: Beijing, China	can you PM me them? dot worry i wont give them to any one im actually curiouse i loved that show... and the old school batman in grey tights you know? i used to have that batcar but it was hotwheels! it was so cool... __________________ .................................................. ......................Just too busy with life ...........................................Team.32.Mentor........................................RED.BELT.Ubercloxx0r ..............................You.should.always.keep.an.open.mind.help.can.be.found.in.the.most.unlikly.places. .....AIUHB0252@2300mhz.SP-97~Abit.NF7-S~512.RAM@fast.timings~9700Pro.w/.copper.HSF.~.2.monitors .................................................. ..Windows XP because I have conditions ....Fold.for.[OC]FoldingNinjas!!!....You .would.be.amazed.at.what.a.group.of.intelegent.peo ple.can.overlook ...............................................All.blanket.statments.are.false\|Nothing.is.absoloute. ............................Don't.Let.ThermalTake.Your.Money~\|~Are.You.Into.Th at.Hacky.Stuff? AKA:supaiku .................................................. ........Can.you.find.the.ninja.in.my.avatar?!?!
	QUOTE Thanks

03-15-03, 03:56 PM	Thread Starter #15
Tonto Registered Join Date: Mar 2003	Silver was the horses name. No idea about the others though. Curious about the T.H.R.U.S.H. thing so did a search and hit this....so who needs UNCLE (did find the real answer too but I cheated) http://www.thrushcream.com/ T.
	QUOTE Thanks

03-15-03, 04:22 PM	#16
Tomac Registered Join Date: Mar 2003 Location: Caldwell, Idaho	Yech! That's rude, crude and socially unacceptable! What's the THRUSH answer and where did you find it? (PM me). Thx!... Tom
	QUOTE Thanks

03-15-03, 05:03 PM	#17
sirtoby Member Join Date: Jan 2002 Location: Finland	This is a post I made earlier in a similar thread, hope it clears it up for you.. This will have a mathematical approach .. dB works on a logarythmic scale, so this means that for instance 0 dB = 10^0 10 dB = 10^1 20 dB = 10^2 50 dB = 10^5 so as you can see, 20 dB is 10^2=1010=100 , so 20 dB is 100 times more intense than 0 dB which is 10^0=1 and 10 times more intense than 10 dB, 10^1=10 So in this case if the first one is 25 dB , 10^2.5 and the other one is 10^2.8 10^2.5 = 316 10^2.8 = 630 630/316 = ~2 So as you can see, it is 2 times more intense. Now, if you apply this to a case where you want to know how noise adds up. For instance, if it'd be three fans, 25 dB each it would be 10^2.5 3 = 10^x x = 2.97 => 29.7 dB
	QUOTE Thanks

03-15-03, 05:07 PM	#18
modenaf1 Member Join Date: Mar 2003 Location: the terran system	5 probably moves more air and is quieter
	QUOTE Thanks

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