What happens when you split two fans with different rpms

[SimplyCurious]

^^^

Let's say we have a fan hub/ splitter that has one fan with a max rpm of 1200 and another with a max of 3000, they are connected to a pwm fan 1 is not pwm, while fan 2 is. What would happen?

If we have 5 of fan 2 and 3 of fan 1 in a single hub (though splitters) and connected to a single pwm slot, what would happen?

 

[JackNaylorPE]

A mess.

Would need to know the Mobo with information of how you set it up in the BIOS, what is controlling it (i.e. Asus FanXpert) and how many amps each fan is.

For 1, with 8 fans on a single header, you'd probably blow the header.

Read this:

http://www.swiftech.com/pwmcontrollers.aspx


Here's what you need to do:

Fan No. 2 (5 @ PWM):

MoBo PWM Header => Swiftech Hub=> (5) fans
Connect the Power cable to your PSU.
http://www.swiftech.com/8-WayPWMsplitter.aspx
http://www.sidewindercomputers.com/sw8waypwmsps.html

Fan No 1 (3 @ DCV) ... at 3,000 rpm, these likely draw a bit of current. This one draws 0.6 amps so using this for 3 fans will blow ya 1 amp header

http://www.frozencpu.com/products/21912/fan-378/Scythe_Ultra_Kaze_120mm_x_38mm_Fan_-_3000RPM_DFS123812H-3000.html

If you have 3 CHA headers on MoBo, best thing to do would be to connect 1 fan to 1 header. Alternately, you'll need a fan controller that can provide at least a watt per channel and manually adjust

 

[SimplyCurious]

A mess.

Would need to know the Mobo with information of how you set it up in the BIOS, what is controlling it (i.e. Asus FanXpert) and how many amps each fan is.

For 1, with 8 fans on a single header, you'd probably blow the header.

Read this:

http://www.swiftech.com/pwmcontrollers.aspx


Here's what you need to do:

Fan No. 2 (5 @ PWM):

MoBo PWM Header => Swiftech Hub=> (5) fans
Connect the Power cable to your PSU.
http://www.swiftech.com/8-WayPWMsplitter.aspx
http://www.sidewindercomputers.com/sw8waypwmsps.html

Fan No 1 (3 @ DCV) ... at 3,000 rpm, these likely draw a bit of current. This one draws 0.6 amps so using this for 3 fans will blow ya 1 amp header

http://www.frozencpu.com/products/21912/fan-378/Scythe_Ultra_Kaze_120mm_x_38mm_Fan_-_3000RPM_DFS123812H-3000.html

If you have 3 CHA headers on MoBo, best thing to do would be to connect 1 fan to 1 header. Alternately, you'll need a fan controller that can provide at least a watt per channel and manually adjust

I use a Asus z97, with 4 cha slots and 1 cpu and cpu opt. I will split the two fan 2s into the cpu and the rest to the fan hub (phanteks luxe fan hub ) or to chasis slots

Btw, Fan 2 is the noctua 140 ppc and 1 is the couger dual x blue

 

[JackNaylorPE]

I have no experience with 3,000 rpm fans.... a limit fan speeds to 850 rpm max.... at 1200 rpm I donbt wanna be in the same room with them. I use the Phanteks 1200 rpm Sp140s (DCV) , they outperform all of Noctuas 1500 rpm fans

Are these all case fans ? Or 2 Cooler fans and 3 case fans.

The Phanteks hub will not work with PWM fans, only 3 pin DCV, you'll need the Swiftech unit.

CHA_1=> 1st 3,000 rpm Fan
CHA_2=> 2nd 3,000 rpm Fan
CHA_3=> 1st 3,000 rpm Fan

Make sure to tell the BIOS that these will be running as DCV

CPU=> 1 PWM Fan
CPU_OPT=> Swiftech PWM Hub =>4 PWM Fans

 

[SimplyCurious]

I have no experience with 3,000 rpm fans.... a limit fan speeds to 850 rpm max.... at 1200 rpm I donbt wanna be in the same room with them. I use the Phanteks 1200 rpm Sp140s (DCV) , they outperform all of Noctuas 1500 rpm fans

Are these all case fans ? Or 2 Cooler fans and 3 case fans.

The Phanteks hub will not work with PWM fans, only 3 pin DCV, you'll need the Swiftech unit.

CHA_1=> 1st 3,000 rpm Fan
CHA_2=> 2nd 3,000 rpm Fan
CHA_3=> 1st 3,000 rpm Fan

Make sure to tell the BIOS that these will be running as DCV

CPU=> 1 PWM Fan
CPU_OPT=> Swiftech PWM Hub =>4 PWM Fans

2 Cooler Fans (2 Noctua 140 3000s)

Rest is 3 Cougers and 3 Noctuas

 

[JackNaylorPE]

what happened to 5 of fan 2 and 3 of fan 1 ? .

Try it this way

(2) NF-A14 iPPC - 3,000 rpm / PWM / 12v / 0.55 amps
(3) Cougar something - 1200 rpm / DCV / 12v / ?? amps
(3) Noctua something - 1200 rpm / DCV / 12v / ?? amps

 

[SimplyCurious]

what happened to 5 of fan 2 and 3 of fan 1 ? .

Try it this way

(2) NF-A14 iPPC - 3,000 rpm / PWM / 12v / 0.55 amps
(3) Cougar something - 1200 rpm / DCV / 12v / ?? amps
(3) Noctua something - 1200 rpm / DCV / 12v / ?? amps

Couldn't I just split my two heatsink fans into one cpu fan (1/6) , split two of the cougers into a cha slot (2/6) , plug in the three noctuas directly into pwm slots (5/6) and connect the last couger directly? (6/6)

Or should I just slap all the cougers on the phanteks 3 pin fan hub and connect it to a 4 slot (1/6) and then directly plug in the rest (4/6)

 

[SimplyCurious]

Oops , the noctua something's are the same as the heatsink fans, cougers are dual x blue LEDs

 

[SimplyCurious]

Noob question but what is DCV again?

 

[SimplyCurious]

Did some research, said that one fan header can do 1.3 amps

 

[SimplyCurious]

Would the header blow if I used the swifttech hub with the 5 noctuas in the cpu opt or cpu fan header

 

[SimplyCurious]

I have no experience with 3,000 rpm fans.... a limit fan speeds to 850 rpm max.... at 1200 rpm I donbt wanna be in the same room with them. I use the Phanteks 1200 rpm Sp140s (DCV) , they outperform all of Noctuas 1500 rpm fans

Are these all case fans ? Or 2 Cooler fans and 3 case fans.

The Phanteks hub will not work with PWM fans, only 3 pin DCV, you'll need the Swiftech unit.

CHA_1=> 1st 3,000 rpm Fan
CHA_2=> 2nd 3,000 rpm Fan
CHA_3=> 1st 3,000 rpm Fan

Make sure to tell the BIOS that these will be running as DCV

CPU=> 1 PWM Fan
CPU_OPT=> Swiftech PWM Hub =>4 PWM Fans

So I plug one pwm cooler fan directly into the cpu and the hub in the opt and put the rest of them in the hub What do I do with the 3 pins?

 

[JackNaylorPE]

DCV = DV Voltage

With this information I could make suggestions

(2) NF-A14 iPPC - 3,000 rpm / PWM / 12v / 0.55 amps used as CPU Cooler fans
(3) Cougar something - 1200 rpm / DCV / 12v / ?? amps used as Front Intake Fans
(3) Noctua something - 1200 rpm / DCV / 12v / ?? amps used as Rear / Top Exhaust Fans

Those are all "guesses"

Asus High end boards (i.e. M7F) are rated at 1 amp..... Rampage used to be listed as 2 amps but no more.

Swiftech makes a nice splitter cable for PWM for your cooler fans .... Two issues:

1. A header can withstand an instantaneous load resulting from what is called "inrush current" when the fan is first started. The faster the rpm, the more inrush there is. I size my fan groupings as follows:

1200 rpm fans = 5/6 of rated header load
1800 rpm fans = 4/6 of rated header load
2400 rpm fans = 3/6 of header load

2. It uses both ports

 

[SimplyCurious]

DCV = DV Voltage

With this information I could make suggestions

(2) NF-A14 iPPC - 3,000 rpm / PWM / 12v / 0.55 amps used as CPU Cooler fans
(3) Cougar something - 1200 rpm / DCV / 12v / ?? amps used as Front Intake Fans
(3) Noctua something - 1200 rpm / DCV / 12v / ?? amps used as Rear / Top Exhaust Fans

Those are all "guesses"

Asus High end boards (i.e. M7F) are rated at 1 amp..... Rampage used to be listed as 2 amps but no more.

Swiftech makes a nice splitter cable for PWM for your cooler fans .... Two issues:

1. A header can withstand an instantaneous load resulting from what is called "inrush current" when the fan is first started. The faster the rpm, the more inrush there is. I size my fan groupings as follows:

1200 rpm fans = 5/6 of rated header load
1800 rpm fans = 4/6 of rated header load
2400 rpm fans = 3/6 of header load

2. It uses both ports

What fans would I plug into the swifttech hub?

The other 3 noctuas are the same as the cpu cooler fans

The cougers are just regular led cougers

So I put all the pwm fans to the hub and the 3 pin to the other motherboard ports

 

[SimplyCurious]

Please explain where I plug (fan/ fan hub) in, sorry, first time dealing with splitters and hubs

 

[SimplyCurious]

DCV = DV Voltage

With this information I could make suggestions

(2) NF-A14 iPPC - 3,000 rpm / PWM / 12v / 0.55 amps used as CPU Cooler fans
(3) Cougar something - 1200 rpm / DCV / 12v / ?? amps used as Front Intake Fans
(3) Noctua something - 1200 rpm / DCV / 12v / ?? amps used as Rear / Top Exhaust Fans

Those are all "guesses"

Asus High end boards (i.e. M7F) are rated at 1 amp..... Rampage used to be listed as 2 amps but no more.

Swiftech makes a nice splitter cable for PWM for your cooler fans .... Two issues:

1. A header can withstand an instantaneous load resulting from what is called "inrush current" when the fan is first started. The faster the rpm, the more inrush there is. I size my fan groupings as follows:

1200 rpm fans = 5/6 of rated header load
1800 rpm fans = 4/6 of rated header load
2400 rpm fans = 3/6 of header load

2. It uses both ports

I just decided to spam these fans ...

http://m.newegg.com/Product?itemNumber=N82E16835709024
All over my case, they are 3 pin and are .14 Amps each, can I hook them all up to the fan hub in the back of the enthoo pro?