Antec 900 questions

[Navid]

I would not want any intake on the bottom of my case for the following 2 reasons.

1- It is so close to the floor (carpet or not) where all the dust falls because of gravity.
2- To allow the same amount of air flow as P180 provides (with a 1" space under its PSU), the 690 case must be located up from the floor or desk or whatever it is on by 1".


Now, you may say that even 1/4" space is enough for air.
But, comparatively speaking, I can place my P182 right on the floor and still have 1" of space under my PSU. I would not be able to do that with 690.


In that respect, P182 seems more flexible to me.

 

[felang]

So I've been looking for a fan controller for my nine hundred so that I don't have to use the switches on the included fans. The included fans all connect directly to Molex, and most controllers have 3 pin inputs for case fans. Is there any kind of adapter that will convert the molex to 3 pin type connector?

I'm leaning towards the Zalman MCF2 (includes power draw monitoring which is very useful IMO) if it makes any difference.

MCF2

Also, will a Tuniq Tower fit when a fan is installed in the side panel?

 

[Navid]

Originally posted by: felang
Is there any kind of adapter that will convert the molex to 3 pin type connector?

This is one option.
http://www.svc.com/4to3ad.html

 

[felang]

Originally posted by: Navid

Originally posted by: felang
Is there any kind of adapter that will convert the molex to 3 pin type connector?

This is one option.
http://www.svc.com/4to3ad.html

That seems like just what I was looking for...will this kind of adapter still allow rpm monitoring ?

 

[Navid]

Originally posted by: felang

Originally posted by: Navid

Originally posted by: felang
Is there any kind of adapter that will convert the molex to 3 pin type connector?

This is one option.
http://www.svc.com/4to3ad.html

That seems like just what I was looking for...will this kind of adapter still allow rpm monitoring ?

No, it will not.
And a fan that only has a Molex connector, does not have an RPM wire anyway.

 

[felang]

Originally posted by: Navid

Originally posted by: felang

Originally posted by: Navid

Originally posted by: felang
Is there any kind of adapter that will convert the molex to 3 pin type connector?

This is one option.
http://www.svc.com/4to3ad.html

That seems like just what I was looking for...will this kind of adapter still allow rpm monitoring ?

No, it will not.
And a fan that only has a Molex connector, does not have an RPM wire anyway.

Yeah that is sort of what I thought, I do have a couple of Aerocool Turbines that I had in my previous rig, I guess I could swap out a couple of those. They are just way to noisy, but the fan controller should fix that.

Anyway, would this cable be any good? I don't know if this would work the other way around if that makes any sense... I'm pretty sure it won't but just wanted to make sure anyway.

http://www.svc.com/3pinto4pinad1.html

I thought maybe I could power a couple of the antec fans off the mobo and use that second wire to monitor the rpm via the controller, I know it sort of defeats the purpose of having the controller but I usually never change the front intake fans from the low setting anyway and this way at least the lcd would at least show a number and not 0 I guess.

Thank you very much for the help.

 

[Navid]

A fan needs 2 wires to spin; one positive and one negative.
The fan either provides RPM information or not.
If it does, it must have a third wire.

A Molex connector has 4 wires. The 4 are 12V, Ground, Ground and 5V.
The 4 wires are all dedicated to supply voltages and ground. None of the 4 Molex connector wires is dedicated to fan RPM.
That is why, as I said, if you have a fan that only has a Molex connector, you cannot get RPM information from it.

There are some fans that are powered through a Molex connector but have a secondary connector for RPM. But, the Tri-cool fans are not like that.

Let's say a fan has the RPM information. Many such fans use a 3-pin connector. One of the three wires in that case is dedicated to RPM.
Let's say you want to power the fan through a Molex connector.
In that case, you can use the adapter you are showing.
The 3-pin connector at the top (3 wires) gets connected to the fan. The 3-pin connector with only 1 wire (yellow) gets connected to the part that monitors the RPM (could be motherboard). The Molex connector gets connected to power (PSU).