Orochi Compatibility List

[Oli]

Info: This is not a PWM fan. The "4-pin adapter" resembles to the old style 4-pin molex connector as found on IDE hard drives and optical drives not the 4-pin PWM CPU fan connector on your mainboard. Just to make this clear.

The S-Flex fan itself only has a 3-pin connector (+/- plus yellow speed signal line) and doesn't support PWM operation. The Slipstream delivered with Mugen 2 does support PWM (4-pin fan connector).

[scyth]

Now I dont think I understood u... I dont know what exactly means "PWM" but if u can connect a 3-pin fan(via an adapter) on the mobo's 4-pin port, u ll receive the benefis of mobo's power saving programs like cool&quiet, right?

What is "slipstream"?
The s-flex fan that u suggested me is different than the one I mentioned?

[Oli]

Two possible connectors for CPU fan on the mainboard:

3-pin or 4-pin. Only 4-pin supports PWM regulation. 3-pin only supports voltage regulation for controlling fan speed.

PWM is the newer kind of speed regulation enabling the board to increase or decrease the rpm depending on the CPU load/temp.

You mentioned a S-Flex fan which has a 4-pin adapter. But this adapter is not for converting the S-Flex' standard 3-pin connector to a 4-pin PWM connector - no, it is just to convert the 3-pin connector to a standard 4-pin molex plug as it is supplied by your PSU. So this adapter simply is for plugging the fan directly to the power supply instead of using the CPU fan header on your mainboard.

And yes, the fan I linked to is different - it is a PWM controlled fan (4-pin board connector) just as the one delivered with Mugen 2 (Slipstrwam is another fan series; an with Mugen 2 a Slipstream PWM version is included covering a wide spectrum of possible fan speed regulated by the mainboard).

So basically if you use the S-Flex YOU mentioned and connect it directly to the PSU it will always run at full speed. The same if your board doesn't support voltage regulation on the CPU fan header.

If you have a 4-pin CPU fan header (= for PWM) you should stick with a fan with 4-pin header (they all have PWM in the model name as for Scythe fans). This will make it possible for your system to adjust fan speeds to the actual needs of airflow.

I'd say: stick with the Slipstream PWM from the Mugen 2 package - you can exchange the fan whenever you like or if you are not satisfied with the fan's noise or cooling performance. This will make things much easier. Otherwise it would be necessary to explain all possible combination of 3- and 4-pin fans/headers an so on. Which can be quiet difficult.

[scyth]

I know that there r two possible connectors on mobo, 3 or 4 pins.
Point is what happens with the 3/4 pin fans.

If I understood u, you tell me that an adapter 3 to 4 pins does nothing, and what I need is a fan with a standard 4 pin cable, right?
Only in this way I can enjoy the benefits of PWM, and this happens with the stock fan of mugen2 or with the s-flex g u mentioned.

Whats slipstream?

[Oli]

Slipstream is the series of fans the one delivered with Mugen 2 is part of. And yes you need a fan with stock 4-pin connector (= PWM).

Scythe EU GmbH : Slip Stream 120 (this page shows the retail versions - PWM version is only available in package with Scythe coolers at the moment)

The Kama PWM I mentioned and the stock fan of Mugen 2 are PWM fans. The S-Flex is 3-pin (non-PWM). You'd have to regulate the S-Flex' speed with other tools (fan controller).

[scyth]

So,

slipstream = 4 pin fan = PWM ?

I wonder whats the adapter's use about, since it connects on the mobo anyway.

What is this link about? Scythe fans with 4 pin for case installation? My mobo has only one 4 pins port.

The s-flex g u mentioned is 3 or 4 pins?

[Shinigami]

Hi scyth ^^

The link shows the Slip Stream series, the one that was released. Mugen 2 has a special Slip Stream fan, which has the standard 4-pin PWM Connector, so it is not an adapter and can be controlled by the Motherboard. The 3-pin to 4-pin adapter is just a gimmick, you can use it to connect the fan directly to the PSU and have it working independently at full speed. So you can't use the adapter for conencting to the Motherbaord.

CoolnQuiet has nothing todpo with PWM, it is just a way to control the fanspeed over the bios regardless of the voltage. There was some big fuzz/confusion among the manufacturers of mobos because some did voltage regulation and some not, so it gets sort of solved that way. But anyway, you can use the normal Mugen 2 fan, it is fine for the beginning, and after you are sure that youa re not satisfied, just buy something else =)

Oli: thanks for the help meanwhile =)

[pimp]

Orochi rev. B is compatible with the Gigabyte GA-MA790X-UD4P (AM2+) board using the new scythe backplate instead of the one from the board.

[scyth]

Originally Posted by Shinigami

The link shows the Slip Stream series, the one that was released. Mugen 2 has a special Slip Stream fan, which has the standard 4-pin PWM Connector, so it is not an adapter and can be controlled by the Motherboard. The 3-pin to 4-pin adapter is just a gimmick, you can use it to connect the fan directly to the PSU and have it working independently at full speed. So you can't use the adapter for conencting to the Motherbaord.

CoolnQuiet has nothing to do with PWM, it is just a way to control the fanspeed over the bios regardless of the voltage. There was some big fuzz/confusion among the manufacturers of mobos because some did voltage regulation and some not, so it gets sort of solved that way. But anyway, you can use the normal Mugen 2 fan, it is fine for the beginning, and after you are sure that youa re not satisfied, just buy something else =)

Dear Shinigami,

So, cool&quiet is for volts downfall and pwm is for cpu_fan downfall, right?
Is there any problem with both of them ON?

I bought and installed the Scythe Mugen 2 and it's excellent. With the fan, I have only 20oC idle, so I'm thinking about remove it.
(what is the minimum rpm? So far I saw 1050rpm, is there any way to go lower?)

If I remove it I ll need case fans for the summer.
I m thinking about the scythe s-flex s-fdb 120mm(I posted its image in the previous page) for the exhaust position, it it good?
Which one do u suggest me for the HD's position?

[Shinigami]

Hi,

@pimp: Danke, habe das Board gelistet

scyth: You can check the eact details on the AMD page, but you should use both ideally. PWM is only for fan controlling, Cool&Quiet is basically for CPU itself, to down the clock and voltage as far as I know it.

Mugen 2 is not made for fanless use, so you have to see the full laod temperatures, idle temperature is mostly unimportant. what matters is the laod temperature. And if you use an S-FLEX D with 800rpm it is good. BUT if you plan to use the PWM, the Mugen 2 fan can do 0(+200 rpm). Which is more flexible. Just use it and try to sue speedfan software to see which rpm is best.