Question Phanteks Enthoo 719 fan hub and fans arrangement ?

[Eamonn100]

My Phanteks Enthoo 719 has a fan hub.

https://imgur.com/a/AKwfuCP

View: https://imgur.com/a/AKwfuCP


I would like to use it up first before using up the fan slots on the Motherboard. (If that is good practice).

Outtake Fans.
Basically, I will have 3... 140mm fans on the top of the PC... and 1... 140mm fan on the back close to the CPU fan.


Intake Fans.
I will have 3... 140mm fans on the front face, with 1... 120mm fan and 2... 140mm fans on the bottom of the case.

On this hub, how many fans can actually go through it. Is it safe and proper practice to use splitters from each plug slot for each sets of fans.

Ie... One hub slot for the top 3 fans. One hub slot for the front 3 fans. One hub slop for the bottom 3 and one for the 1 fan at the back? What would folks sugest?

 

[Lutfij]

https://phanteks.com/assets/manuals/Enthoo-719.pdf
Page 15, the fan hub can accept both 3 pin and 4pin fans but the hub will take 4x 4pin PWM fans and 3x3pin DC fans. You can use this splitter;
https://www.phanteks.com/Fan-Splitters.html
to expand on the number of fans hooked to the hub and you shouldn't exceed 4A on the hub in total, not per header.

 

[Paperdoc]

I agree fully with Lutfij above. ASSUMING that you are using only 4-pin fans, use only the four 4-pin output headers for your fans. (Use the 3-pin headers only for 3-pin fans.) I recommend that you configure the mobo SYS_FAN or CHA_FAN header you use to feed this Hub board to use the newer PWM Mode, and not the older Voltage or DC Mode, and not any Automatic Mode option.

You have not specified exactly which fans you are using, so we cannot check their exact power specs. However, it is RARE for any such fan to consume over 0.25 A current, so even 10 fans in total will not exceed the 4.0 A limit of the Hub. Likewise, although the manual does NOT give this spec, it is common that the headers on the Hub EACH have a limit of 1.0 A, and three fans per header is still no problem.

Question: you have not said anything about your CPU cooler system. IF you are using a liquid-cooled system with a rad and fans, are those fans included in this total of ten? This is important because any fans involved in cooling the CPU chip should NOT be connected to this Hub. Such fans need to be controlled by a mobo fan header that uses a temperature sensor inside the CPU chip, and that is NOT any SYS_FAN or CHA_FAN header. Such fans need a different power and control connection.

 

[Eamonn100]

I agree fully with Lutfij above. ASSUMING that you are using only 4-pin fans, use only the four 4-pin output headers for your fans. (Use the 3-pin headers only for 3-pin fans.) I recommend that you configure the mobo SYS_FAN or CHA_FAN header you use to feed this Hub board to use the newer PWM Mode, and not the older Voltage or DC Mode, and not any Automatic Mode option.

You have not specified exactly which fans you are using, so we cannot check their exact power specs. However, it is RARE for any such fan to consume over 0.25 A current, so even 10 fans in total will not exceed the 4.0 A limit of the Hub. Likewise, although the manual does NOT give this spec, it is common that the headers on the Hub EACH have a limit of 1.0 A, and three fans per header is still no problem.

Question: you have not said anything about your CPU cooler system. IF you are using a liquid-cooled system with a rad and fans, are those fans included in this total of ten? This is important because any fans involved in cooling the CPU chip should NOT be connected to this Hub. Such fans need to be controlled by a mobo fan header that uses a temperature sensor inside the CPU chip, and that is NOT any SYS_FAN or CHA_FAN header. Such fans need a different power and control connection.

Apologies... theses are my fans... Noctua industrialPPC NF-F12 iPPC-2000/3000 PWM IP67 120/140mm Fan

and my cooler... Noctua NH-D15 Chromax Black CPU Cooler + NA-HC4 Chromax Black

 

[Eamonn100]

In the attached image, is the single white header different to the black ones?

 

[Paperdoc]

Thanks for the details, because the fans you plan are NOT "typical" - they are high-performance fans with higher max current consumptions than the common types. From their web pages, the max current use of each model is:
Noctua industrialPPC NF-F12 iPPC-2000 PWM 0.10 A
Noctua industrialPPC NF-F12 iPPC-3000 PWM 0.30 A
Noctua industrialPPC NF-F14 iPPC-2000 PWM 0.18 A
Noctua industrialPPC NF-F14 iPPC-3000 PWM 0.55 A

Noctua NH-D15 Chromax Black with 2x Noctua NF-A15 HS-PWM chromax.black fans: 0.13 A per fan = 0.26 A for the pair

NA-HC4 Chromax Black are just covers for the fans.

Now there are TWO parts of this where YOU need to do some calculations.

FIRST separate your fans according to WHERE they are used. The CPU cooler and its two fans MUST be connected to the CPU_FAN header of your mobo. That is the only header that will use the correct temperature sensor inside the CPU chip to guide it AND provide careful monitoring of the speed signal of ONE of those fans to detect possible fan FAILURE. So these two fans should NOT be connected to that general fan Hub board. Now the CPU_FAN header can supply power to all fans connected up to 1.0 A max current. You can see above that the two can consume up to 0.26 A, so no problem there.

NEXT address the CASE Ventilation fans. You have listed four possible models - not clear whether you plan to use all four types. The NUMBER of each type is not specified. As I said earlier, there are two limits you need to apply when connecting several of those fans to the Hub. For EACH output port of the Hub you cannot exceed 1.0 A max current for two or three fans connected to that header by a Splitter. Then also, for the TOTAL load on the entire Hub you cannot exceed 4.0 A max current. So you need to arrange all the case vent fans with Splitters on the four Hub output ports to adhere to those limits.

All fans generate a speed signal consisting of a series of pulses sent back to the host header for counting to display speed. But any header can deal with the speed signal sent back by only ONE fan. So all Hubs or Splitters will send to their host header the speed of ONE fan and ignore all the rest - you will never "see" those other speeds anywhere. This does NOT impact the ability to control theose fan speeds - in fact, that speed is NOT used in speed control. Control is based solely on a measured TEMPERATURE. But the header DOES use the speed signal to watch for NO speed signal indicating FAILURE. However, it can do that for ONLY the ONE signal it gets, so all other fans on a Hub or Splitter cannot be monitored for failure. YOU should look at all your fans from time to time to ensure they all still are working. On that Hub board, the only WHITE port is the one that WILL send one fans' speed signal back to the host header.

Oh, a final note. Noctua normally includes with most of their fans one or two "Low Noise Adapter" or "LNA" devices. These are small units that can be inserted into the fan cable connection to a mobo header or Hub port. The are useful ONLY when you are powering fans from some fixed-Voltage source (like a Molex power output from the PSU) and need a way to slow the fans down to less than max speed. Do NOT use these at all when you are powering AND controlling fans from a mobo header. They give you no advantage and have the real effect of limiting the maximum cooling you can achieve at high workloads.

 

[Eamonn100]

Thanks for the details, because the fans you plan are NOT "typical" - they are high-performance fans with higher max current consumptions than the common types. From their web pages, the max current use of each model is:
Noctua industrialPPC NF-F12 iPPC-2000 PWM 0.10 A
Noctua industrialPPC NF-F12 iPPC-3000 PWM 0.30 A
Noctua industrialPPC NF-F14 iPPC-2000 PWM 0.18 A
Noctua industrialPPC NF-F14 iPPC-3000 PWM 0.55 A

Noctua NH-D15 Chromax Black with 2x Noctua NF-A15 HS-PWM chromax.black fans: 0.13 A per fan = 0.26 A for the pair

NA-HC4 Chromax Black are just covers for the fans.

Now there are TWO parts of this where YOU need to do some calculations.

FIRST separate your fans according to WHERE they are used. The CPU cooler and its two fans MUST be connected to the CPU_FAN header of your mobo. That is the only header that will use the correct temperature sensor inside the CPU chip to guide it AND provide careful monitoring of the speed signal of ONE of those fans to detect possible fan FAILURE. So these two fans should NOT be connected to that general fan Hub board. Now the CPU_FAN header can supply power to all fans connected up to 1.0 A max current. You can see above that the two can consume up to 0.26 A, so no problem there.

NEXT address the CASE Ventilation fans. You have listed four possible models - not clear whether you plan to use all four types. The NUMBER of each type is not specified. As I said earlier, there are two limits you need to apply when connecting several of those fans to the Hub. For EACH output port of the Hub you cannot exceed 1.0 A max current for two or three fans connected to that header by a Splitter. Then also, for the TOTAL load on the entire Hub you cannot exceed 4.0 A max current. So you need to arrange all the case vent fans with Splitters on the four Hub output ports to adhere to those limits.

All fans generate a speed signal consisting of a series of pulses sent back to the host header for counting to display speed. But any header can deal with the speed signal sent back by only ONE fan. So all Hubs or Splitters will send to their host header the speed of ONE fan and ignore all the rest - you will never "see" those other speeds anywhere. This does NOT impact the ability to control theose fan speeds - in fact, that speed is NOT used in speed control. Control is based solely on a measured TEMPERATURE. But the header DOES use the speed signal to watch for NO speed signal indicating FAILURE. However, it can do that for ONLY the ONE signal it gets, so all other fans on a Hub or Splitter cannot be monitored for failure. YOU should look at all your fans from time to time to ensure they all still are working. On that Hub board, the only WHITE port is the one that WILL send one fans' speed signal back to the host header.

Oh, a final note. Noctua normally includes with most of their fans one or two "Low Noise Adapter" or "LNA" devices. These are small units that can be inserted into the fan cable connection to a mobo header or Hub port. The are useful ONLY when you are powering fans from some fixed-Voltage source (like a Molex power output from the PSU) and need a way to slow the fans down to less than max speed. Do NOT use these at all when you are powering AND controlling fans from a mobo header. They give you no advantage and have the real effect of limiting the maximum cooling you can achieve at high workloads.

Excellent stuff, thank you. I'm off to the races now.

Can the white socket on the hub be used like the rest?

 

[Eamonn100]

Also, on one hub socket, I will be mixing a Noctua industrialPPC NF-F14 iPPC-2000 and a Noctua industrialPPC NF-F14 iPPC-3000. Is this ok, in reference to both having different maximum rpm and ampage?

 

[Paperdoc]

Actually, the white Port #1 on that Hub board MUST be used for at least one fan. That is because it is the only one that sends its fan's speed back to the host mobo header. IF you leave that output empty, the mobo will report NO fan or a FAILED fan on that header.

Connecting those two different fans to one output port is just fine. The each will operate at different speeds and current consumptions, but that does NOT harm anything. They will receive and use identical power supply VOLTAGE from port Pin #2, and of PWM signal from port Pin #4, and both fans will be perfectly "happy" with that.