Is Molex used for fans?
Actually I’ve seen and had Molex connected fans that have a 1-pin monitor relay that connects to the motherboard. Basically this reports the fan speed to the motherboard. Sometimes these fans run at higher speeds, and sometimes they do not. Also, I’ve had a couple 200mm Molex fans.
Is it better to connect fans to motherboard or PSU?
Will connecting a case fan to a mobo instead of PSU lower the temperature? No, it makes no difference what so ever. The fan gets the power it needs from either the header on the board or a molex connection on the psu.
What connector do case fans use?
Most cooling fans will connect to a PC with a standard connector of some sort. Modern systems will typically use 3-pin or 4-pin dedicated fan headers, though standard MOLEX 4-pin peripheral connectors are also used. From left to right: A 3-pin connector, a 4-pin connector and a MOLEX connector.
Can I connect Molex fan to motherboard?
Molex connectors don’t power anything on the motherboard. In fact, they don’t connect to the motherboard at all (unless there’s some extremely fancy motherboard that I’m not aware of). All molex is for is to connect other PC components like case fans to the power supply. It doesn’t interact with the motherboard at all.
Can you control fan speed through Molex?
basically it takes molex power in and the switches are just potentiometers that will reduce the voltage to lower the speed. Just be warned the power to spin up the motor will normally be around 30/40% speed so you don’t get full 0-100% control. note it will also dim the led is it has light aswell.
What PC parts use Molex?
Uses. Certain Molex connectors are used for providing power to the motherboard, fans, floppy disk drive, CD/DVD drive, video card, some older hard drive models, and more. Compatible connectors are available from many manufacturers, not just Molex and AMP. In 20/24-pin configurations, the Mini-Fit Jr.
Should I let motherboard control fans?
Therefore, for use in a PC, we would strongly recommend using 4-pin PWM fans and controlling them via PWM through the motherboard’s BIOS or UEFI whenever possible.
How should case fans be installed?
Generally, you want the case fans in front of the case drawing in air while the fans at the rear blow air out. If your case has vents at the top, they should be placed as exhaust fans because hot air will rise. Side-mounted fans should be used for intake, though they often don’t have air filters.
What do 3-pin case fan connectors do?
Pins: The leads in a 3-pin connector are designated for power, signal, and ground. In a four-pin variant, the fourth lead is a control lead; in a fan application, it would control the speed of the fan. These connectors are often available in low halogen or halogen-free versions, especially in those used in appliances.
Can 3-pin fans plug into 4 pin?
A 3-pin case fan can easily be connected to a 4-pin connector on the motherboard. The fourth pin is simply left blank in this configuration. In most cases, it will then run unregulated at a fixed speed. Some newer boards offer the possibility to adjust the fan speed by voltage.
Is molex obsolete?
There is almost no new hardware left that uses 4-pin Molex power connectors. In my opinion it should’ve been gone 5-6 years ago (at least from the consumer market for new PSUs) and replaced with extra 6 or 8-pin 12V connector with molex adapters.
Can fans be powered from molex?
Most likely a Molex connector; an alternate way to power your fans in case you do not have enough fan headers on your motherboard. Your PSU most likely has Molex connectors. If you plug your fans via Molex they won’t be able to have fan speed control; they will just be at full blast all the time.
How many watts can Molex handle?
The 6pin connector can provide up to 75watts. The 8pin connector can provide up to 150watts.
Why does my fan have a Molex connector?
the molex connectors are to connect the fans directly to the PSU. The female part of the Fan-Molex-Connector to the male connector of the PSU. The male part of the fan is just so you don’t lose a connector by using the fan and can connect to any other molex female connector in your setup to supply power.
Can Molex fans be connected to the motherboard?
If your case fans have either, you are ok. If your fans have molex connectors (white/black with 4 rounded holes) only then you want a different controller or you will need some molex to 3 or 4 pin adapters. Some fans will have both molex and 3 pin connections so you can do either.
Can I use Molex to power GPU?
It can be done with a 2 to 1 dual molex to pci-e power plug converter but basically if the power supply does not have built on pci-e power leads etc it is not high enough quality or power rating to run a gpu card.
Is Molex 12V or 5V?
The yellow is the +12V and the red is the +5V.
Where do I connect case fans?
The first thing you need to do is to connect your case fans to the power supply and the motherboard. Most case fans have either a 3-pin or a 4-pin connector, which can be plugged into the fan headers on the motherboard. The fan headers are usually labeled as CPU_FAN, SYS_FAN, CHA_FAN, or something similar.
Does BIOS control case fans?
BIOS fan control is a feature that allows you to adjust the speed and behavior of your CPU and case fans, depending on the temperature and load of your system. You can access the BIOS fan control settings by entering the BIOS setup menu when you turn on your PC, usually by pressing a key like F2, F10, or Delete.
What port do case fans plug into?
A motherboard fan connector is a small three or four-pin connector located on the motherboard. The fan will have one set of cables (bundled together) that will connect into the connector on the motherboard. The motherboard fan connector is a Molex KK connector.
Can you link case fans?
Absolutely, it’s extremely common to do so actually. In terms of controlling the speed of the fans, if they’re attached to separate fan headers, they’ll have independent speed control, if you connect them to the same wire, they’ll share speed control.
How long do case fans last?
Most fans are designed for about 30,000-50,000 hours of continuous use – or 3.5-6 years. However, this does not mean that all fans will last the same amount of time. A case fan, for example, will likely last for 5-6 years where as a laptop fan may last closer to 10 years.
Where are Molex connectors used?
Applications of the Molex connector Besides its widespread use in desktop computers and servers, the Molex connector is also used in some automotive applications. For example, it can be used in automotive wiring to connect accessories such as additional fans, lighting or audio systems.
What is Molex known for?
Molex LLC is a manufacturer of electronic, electrical, and fiber optic connectivity systems.
Can I use Molex to power GPU?
It can be done with a 2 to 1 dual molex to pci-e power plug converter but basically if the power supply does not have built on pci-e power leads etc it is not high enough quality or power rating to run a gpu card.
Can I add more case fans to my Motherboard?
Do case fans have a Molex adapter?
Does a motherboard have a case fan header?
Where to plug in case fans?
What are Case Fans and Why are They Important?
Case fans are those little fans you see inside your computer case, right? They’re responsible for keeping everything cool. That’s a big deal, because overheating can lead to all kinds of problems, like crashes, data loss, and even hardware damage.
Imagine your computer like a giant oven. Without fans, the components inside would get really hot, just like food in an oven. The fans act like little air conditioners, sucking in cool air and blowing it over the components to keep them from getting too toasty.
Molex Connectors: The Power Source
So, how do these case fans get their power? That’s where molex connectors come in.
Think of a molex connector like a power outlet. You have a power supply unit (PSU) inside your computer that provides power to all of its components, including the fans. The PSU has a bunch of these molex connectors on it, and they have several pins for different power configurations.
Case Fans, Molex, and Motherboards: The Connections
Now, here’s where things get a little more technical. You have a few different ways to connect your case fans:
1. Directly to the Motherboard: Some motherboards have dedicated headers for case fans. This is typically the best way to connect your fans, as the motherboard can control fan speeds based on system temperatures. The motherboard usually comes with a few fan headers that are four-pin or three-pin connectors. But some motherboards come with fan headers that are two-pin connectors. The more pins, the more control over the fan speeds.
2. Using a Molex Connector: If your motherboard doesn’t have enough fan headers, or if you just prefer to run your fans independently, you can connect them to a molex connector on your PSU. This doesn’t allow you to control the fan speed, but it does provide a reliable power source.
3. Using a Fan Controller: There are also dedicated fan controllers that connect to your motherboard and provide multiple molex connectors. This allows you to manage the speeds of multiple fans independently, without having to use all of your motherboard’s fan headers.
What are Some of the Benefits of Each Connection Method?
Let’s break down the benefits of each method:
1. Motherboard Fan Headers:
* Pros:
* You get better fan speed control.
* The motherboard can manage fan speeds based on system temperatures.
* Some motherboard fan headers even come with fan speed monitoring, so you can keep track of how fast your fans are spinning.
* Cons:
* There might not be enough fan headers available on your motherboard.
2. Molex Connectors:
* Pros:
* It’s a simple, reliable way to power your fans.
* No need to use up motherboard fan headers.
* Cons:
* You lose the ability to control fan speeds.
* You might not have enough molex connectors on your PSU.
3. Fan Controllers:
* Pros:
* Gives you greater flexibility with fan control.
* Allows you to manage the speeds of multiple fans independently.
* Cons:
* Adds an extra component to your system.
* Can be more expensive than using the motherboard’s fan headers.
Choosing the Right Connection Method for Your Case Fans
So, how do you know which connection method is right for you? It depends on a few things:
* Your Motherboard: What kind of fan headers does your motherboard have? How many?
* Your PSU: How many molex connectors does your PSU have?
* Your Needs: How important is fan speed control to you?
If you have a lot of fans, or if you want more fine-grained control over their speeds, then using a fan controller or connecting your fans to your motherboard’s fan headers might be the best option.
If you only have a few fans and don’t need to control their speeds too precisely, then using molex connectors might be the way to go.
FAQs: Case Fans, Molex, and Motherboards
Q: What if my case fan only has a two-pin connector?
A: If your case fan has a two-pin connector, you can often use a three-pin adapter to connect it to a motherboard fan header or molex connector.
Q: Can I use a three-pin fan on a four-pin header?
A: Yes, you can use a three-pin fan on a four-pin header. The fourth pin is for PWM (Pulse Width Modulation) control, which allows the motherboard to adjust the fan speed. If your fan is three-pin, it won’t have PWM control, but it will still work.
Q: How do I know what type of fan header my motherboard has?
A: You can check your motherboard’s manual for details on the fan headers. Or, you can look at the headers themselves. They’ll usually be labeled, and you can count the number of pins.
Q: What are some of the best fan controllers for PC?
A: Some of the best fan controllers for PC include the NZXT GRID V3, Corsair Commander Pro, and Arctic Liquid Freezer II. But always do your research and read reviews to see which one best suits your needs.
Q: Does the type of connector affect the fan’s performance?
A: In most cases, the type of connector doesn’t affect the fan’s performance. The connector simply provides power and signals to the fan. But if you’re using PWM control (four-pin connector), then you’ll get better fan speed control and noise management.
Final Thoughts: Keep Your PC Cool
Keeping your case fans connected and running properly is important for the health of your computer. If your computer starts running hot, it could be a sign that a fan isn’t working properly or that it needs to be cleaned.
You don’t want your computer to become a little oven, so keep those fans spinning and everything running cool!
See more here: Is It Better To Connect Fans To Motherboard Or Psu? | Case Fans Molex Or Motherboard
Case Fans to PSU or to motherboard? | Tom’s Hardware
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[SOLVED] – Case fans into PSU or Motherboard? – Tom’s
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I’ve got two stock case fans which were 3-pin and molex on teh same header. I connected one 3-pin to the motherboard and used the molex connectors to piggy back one fan off the other. They run at the same Reddit
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