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Fan Header Question

Avenger411
Level 10

‎04-29-2015 02:10 PM - last edited on ‎03-06-2024 03:07 AM by Community Admin

Hey

Can the CPU_OPT be used as a normal fan connector ? I'm looking to putting more fans and this one would be ultra handy. I don't like having to resort to add-on cards for fan connections etc.

thanks

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift
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6 REPLIES 6

Deon017
Level 8

‎04-29-2015 02:44 PM

Yes- I use mine as just that - you can run your fans directly from your PSU, but then you don't have control of them
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Avenger411
Level 10
In response to Deon017

‎04-29-2015 02:51 PM

Deon017 wrote:
Yes- I use mine as just that - you can run your fans directly from your PSU, but then you don't have control of them


Hey

"run fans directly from psu" care to explain ? i don't see how i can plug a 3pin fan header into my psu --____--. You got my curiosity spiked.

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift
0 Kudos

Chino
Level 15

‎04-29-2015 03:41 PM

Some heatsinks come with two fans. So apart from having the CPU_FAN header, ASUS also gives you the CPU_OPT fan to connect the extra one. That is also why the settings for CPU_FAN is mirrored off to the CPU_OPT header.

To connect your fans directly to the PSU, you'd need a 3 pin fan to molex adapter.
48762
Overclocking The Core i7-7700K With DIP5 |Overclocking the Strix GTX 1080 | OC Panel & OC Panel II Guide | Overclocking i7-6700K to 4.6GHz | R5E 128GB DDR4 Setup | Liquid Cooling GTX 980 Ti Poseidon | R5E M.2 FAQ
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Avenger411
Level 10

‎04-29-2015 04:15 PM

Hey

Okay i see. Since i'm using a h100i, my cpu fan's setting is "full speed in q-fan control" so whenever i will plug a fan in the cpu_opt, it will be full speed straight away. Which i want actually so i don't mind. Although, could i use a different settings on the cpu_opt regadless of the mirroring ?

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift
0 Kudos

Chino
Level 15

‎04-29-2015 04:20 PM

Nope. The CPU_OPT header will always use the same setting you've chosen for the CPU_FAN header.
Overclocking The Core i7-7700K With DIP5 |Overclocking the Strix GTX 1080 | OC Panel & OC Panel II Guide | Overclocking i7-6700K to 4.6GHz | R5E 128GB DDR4 Setup | Liquid Cooling GTX 980 Ti Poseidon | R5E M.2 FAQ
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Avenger411
Level 10
In response to Chino

‎04-29-2015 05:55 PM

Chino wrote:
Nope. The CPU_OPT header will always use the same setting you've chosen for the CPU_FAN header.


Hey

very well thank you chino and deon, ill just run the think full speed 😄

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift
0 Kudos