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Powering four pin cpu heatsink fan

JacTech17
By JacTech17
in Cooling
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hi, I have an older motherboard that only supports 3 pin fans, what can i get to power the 4 pin fan for a CPU heatsink?

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use the 3pin then? You can still control the fan speed. It doesnt work with magnetic levitation bearing fans though. If the fan has LEDs, then the brightness will also change based on fan speed (cool feature imo)

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: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside 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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how to power a 4 pin fan through the power supply

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You need a molex to 3 pin fan converter. Which are very common types. Also make sure you get something that is grounded properly or else it might cause a fire hazard as there were some molex to SATA and fan converters catching fire. 

 Image result for 3 pin fan adapter

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On 6/15/2018 at 11:09 PM, Jurrunio said:

use the 3pin then? You can still control the fan speed. It doesnt work with magnetic levitation bearing fans though.

Maglev fans like Corsair's ML's need pwm to properly function but can still be controlled with dc. They'll wear out more quickly and not be as quiet though. 

On 6/15/2018 at 11:35 PM, Rainbow Dash said:

You need a molex to 3 pin fan converter. 

2pin is fine too. The 3rd pin is for rpm and is a dummy pin on those molex adapters. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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1 minute ago, WoodenMarker said:

Maglev fans like Corsair's ML's need pwm to properly function but can still be controlled with dc. They'll wear out more quickly and not be as quiet though. 

2pin is fine too. The 3rd pin is for rpm and is a dummy pin on those molex adapters. 

You're correct. Forgot there isn't a 3rd pin and I own like 20 of these things.

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