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Hi, who knows about fans around here ? - Page 2

post #11 of 22
Thread Starter 
Ok, good to know about you..

So Ehume about Deltas and Sanyo and psyclum, this is a new one to add to the list..


I like Delta's, they say they make kinda loud noise , but they probably have high static pressure. Any ideea if they can be found commercially, or only for industrial oem systems ?
post #12 of 22
You can actually find them through newegg and other PC parts dealers such as ] PerformancePCs ], [ Sidewinder Computers ], etc. I think NewEgg also sells decent Delta's but they go for a high price as it is new. If going for high CFM delta's it may be more cost effective to find them used from ebay or the like depending on the seller.
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post #13 of 22
6ou can call them for replying your question above with the mention buttom like this @
@psyclum @ehume
Edited by PontiacGTX - 1/15/14 at 7:06am
post #14 of 22
Thread Starter 
Quote:
Originally Posted by Chozo4 View Post

You can actually find them through newegg and other PC parts dealers such as ] PerformancePCs ], [ Sidewinder Computers ], etc. I think NewEgg also sells decent Delta's but they go for a high price as it is new. If going for high CFM delta's it may be more cost effective to find them used from ebay or the like depending on the seller.

Ok , any place you can order them in Europe ? Or from America, that doesn't double they're price ?
post #15 of 22
It's okay, no need to worry... I have arrived!

wink.gif
   
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post #16 of 22
Thread Starter 
Oh, ok i bow to you and you knowledge. smile.gif

What is your opinion about Delta fans ?
post #17 of 22
No mention of the high-speed GentleTyphoon GT's. The ones with the easy to get to PWM lead on the PCB. yessir.gif
Edited by Dirtyworks - 1/16/14 at 7:06am
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post #18 of 22
heh i wouldn't call myself an expert on anything, the only thing i look at is if it makes sense from a physics stand point biggrin.gif it's hard to keep focus with all the marketing material and hype surrounding a product but generally speaking if you take a step back and look at it from a pure physics point of view, you often can overlook the hype and get to the meat of the claims.

as far as comparing delta vs sanyo danki... it's like comparing a Mercedes vs BMW biggrin.gif quality wise, they are both very strong OEM of fans and comparison can only be made on a model to model basis. both have EXCELLENT fans and both are "generally" more then overkill for the purpose of consumer grade computer cooling.

things to keep in mind when selecting fans are static pressure, CFM, and dba rating of the fan. many people SAY they don't care about noise and just want the best cooling till they had to live with their choices biggrin.gif the key to selecting the best fan is to balance the amount of airflow needed to achieve the desired result while keeping the decibel at its lowest possible level. generally speaking anything above 2000RPM would be "too loud" for consumer/home use purposes.

alot of people would suggest you get a much stronger fan then you need then dial it down by under-volting it. the problem with that is when it's undervolted, it doesn't perform any better then the weaker/quieter fan in the 1st place biggrin.gif so there is really no reason to buy a $60 fan just to under-volt it to perform like a $12 fan biggrin.gif when evaluating what fans to get, you must 1st realize there are 2 distinctly different focus in fans. the 1st is to optimize static pressure so the fan can overcome airflow resistance caused by air filter/radiator/grill/other objects blocking airflow/etc... for strong static pressure, you generally want fans with alot of fan blade surface area so it's able to push against more air at lower speed. if you look at the scythe GT's


you will notice that their fan blades are curved and elongated to maximize the surface area of the blades themselves.

if you look at the corsair SP fans


you will notice that they blades themselves are much wider then typical fans so there is more surface area pressing against the air and moving it.

both of these designs increase surface area so that more energy of the fan motor is transferred to the air that it's pushing against. (or same energy but at lower RPM)

there are other fans that use a different method all together. they use ALOT more blades (11 blades instead of 7 or 9) to increase the surface area of the fanblades


so the energy transfer from the motor to the air it's pushing is more effective.

other concerns about static pressure generally has to do with angle of attack of the blades themselves (how it's curved) and static fins/grill that focuses the airflow after it's been pushed by the fan blades. here are some examples




as to what is the "best" there really isn't a "best" per se because it comes down to the fan design and manufacturing quality. GENERALLY speaking the scythe GT's are consider the favorites at OCN because they've proven themselves over the years. that's not to say that it's superior to a Delta, just that it's impressed more people on OCN over the years with it's reliable performance balanced with its acceptable acoustic signature.

on the flip side of the fan focus is the CFM optimized fans.(exhaust fans) i rarely pay much attention to these types of fans because pretty much any fan can fill this role as long as it's quiet biggrin.gif they just need to remove enough air from the case so there is no "back pressure" built up that allows for hot spots to develop within the case itself. personally i don't use an exhaust fan on my machine since my case (FT02) is as optimized for alr flow as a case can be anyway biggrin.gif there is no back pressure or hot spot that can develop in that case smile.gif i suppose i CAN put an exhaust fan on it, but IMO its benefit is negligible.

so... when asking advice on what fans to use, you generally want to narrow the scope of the question 1st so we can offer better advice as to what fan may best fit your needs.
post #19 of 22
Thread Starter 
What a good post of information. Thank you.

I have so many questions right now, i will take a look over your post and research some, and be back.
post #20 of 22
psyclum is silver tongued when it come to many things. biggrin.gifthumb.gif
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