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Corsair ML140 Voltage Question

jiyeon
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Hi, so I'm after some new fans, specifically the Corsair ML140 fans for the front of my NZXT S340.

 

However, on the Amazon page, it says this:

Quote

Note: ML fans require a constant 12V in order to lift the bearing for it to spin. Do not use using a fan controller that is voltage regulated and not supplying 12V.

 

I use a fan splitter already for the 2 front fans of my case, so I'd be using that same 1-to-2 fan splitter for my new Corsair ML140 fans. I currently use Corsair SP120 RGB fans at the moment.

 

I was wondering if it's alright if I used the fan splitter to power the Corsair ML140 fans?

mechanical keyboard switches aficionado & hi-fi audio enthusiast

switch reviews  how i lube mx-style keyboard switches

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4pin splitter is fine, 3pin are not (unless you run them full speed all the time)

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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5 minutes ago, seoz said:

It's a 4-pin that slaves into a 3-pin, is that alright for an ML140?

 

5183mS55owL._SL1000_.jpg.8473543fc24cfe054220f1e7e6d5cfc3.jpg

it's fine. That still count as a PWM connector even though it lacks a pin (that's for detecting speed),

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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8 minutes ago, seoz said:

It's a 4-pin that slaves into a 3-pin, is that alright for an ML140?

 

5183mS55owL._SL1000_.jpg.8473543fc24cfe054220f1e7e6d5cfc3.jpg

That splitter is fine, but more importantly, the ML fans require a PWM signal source as well. You'll need to drive them from either a PWM enabled header on the motherboard or a PWM controller.

 

EDIT: As mentioned by @Jurrunio, if the fans ARE plugged into a 3-pin source, you need to make sure they are fed 12V, which will make them stay at full speed, but that also means they'd be rather loud.

CPU: AMD Sempron 2400+ / MOBO: Abit NF7-S2G / GPU: WinFast A180BT 64MB / RAM: Mushkin DDR333 256MBx2 / HDD: Seagate Barracuda 7200RPM 120GB

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16 minutes ago, meenmeen1103 said:

That splitter is fine, but more importantly, the ML fans require a PWM signal source as well. You'll need to drive them from either a PWM enabled header on the motherboard or a PWM controller.

 

EDIT: As mentioned by @Jurrunio, if the fans ARE plugged into a 3-pin source, you need to make sure they are fed 12V, which will make them stay at full speed, but that also means they'd be rather loud.

 

17 minutes ago, Jurrunio said:

it's fine. That still count as a PWM connector even though it lacks a pin (that's for detecting speed),

 

I made a quick pic of how it would work in theory, I'm still concerned that the second fan wouldn't be getting enough power.

 

Untitled.png.b6af7db2e5293bcc48e61b51110c735c.png

mechanical keyboard switches aficionado & hi-fi audio enthusiast

switch reviews  how i lube mx-style keyboard switches

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1 minute ago, seoz said:

 

I made a quick pic of how it would work in theory, I'm still concerned that the second fan wouldn't be getting enough power.

just make sure the sum of current ratings don't exceed 1A

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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5 minutes ago, seoz said:

I made a quick pic of how it would work in theory, I'm still concerned that the second fan wouldn't be getting enough power.

So 4-pin mobo header, perfect. Just make sure in BIOS that the fan header is set to PWM mode when switching fans if it has the option, especially if your SP120s are running at less than full speed currently. The "second" connector on the splitter still supplies the same power, the missing pin is only for RPM reporting. There's an issue with boards receiving two RPM signals on one header so the splitter omits one fan, reports the speed of the "first".

CPU: AMD Sempron 2400+ / MOBO: Abit NF7-S2G / GPU: WinFast A180BT 64MB / RAM: Mushkin DDR333 256MBx2 / HDD: Seagate Barracuda 7200RPM 120GB

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