Cpu Opt Fan Header For Case Fan

ASUS support was unable to give me an answer, and I've been waiting for their "escalation" with product engineers.

Cpu opt fan header for case fan. For the 2 fans I would connect one to the CPU FAN and the other to the CPU OPT so this way if the system starts to overheat it will tell the fans to increase their RPMS, you can use a splitter and just connect em both to CPU FAN but I prefer not to do it this way. A typical 140mm 1250 rpm case fan is rated for about 0.14 amps. Cooling and temps - I have a Kraken X72 liquid cooler and 7 fans (inc the 3 with the liquid cooler) in an NZXT H700i case.

On the case fans plugged to the CPU fan header - yes it will be controlled depending on the CPU temperature. At idle, the CPU fan turns at around 0 RPM while the rear fan goes at about 850 RPM. There is no fan control.

My point is, if you're on a budget, you don't want to spend more on fans and aftermarket coolers, airflow should be the focus when choosing a case. They usually use a small fan with a 2 pin connector. Cpu_opt is my last option to fit in the case's built in controller.

This is how I've had mine for years;. Not sure if that's normal or showing total rpm of all 3 fans??. If you want to monitor and control the individual fans via software, the available internal fan headers (connectors) according to the official specs are:.

A better option would be splitter cables for the normal case fan headers. I suppose it. And the "Y" cable for the radiator fans would connect to a regular fan header.

First, if you know the power ratings of your fans and of your motherboard, you may be able to use a splitter such as the Rosewill Case Fan PWM Cable Splitter. The sensor report shows the wrong fan headers for the Gigabyte Aorus Z390 master MB. Anyway I've got my H115i Pro attached to the CPU_FAN header.

For example the MSI G43 Does it have one of each (3 pin and 4pin) for a total of 4 3 pin and 4 4pin or just 2 3. I did not use System 1 fan header and since AIDA64 did not see a Chassis 3 fan sensor I have to assume that System 1 fan header is your Chassis 3. H100i v2 to AIO header.

Chassis and CPU fans may use either 3-pin or 4-pin power connectors. AIDA64 reports 7 system fans (1 thru 7). The fan on that header is on the side of my case, blowing air in, near the ram.

The CPU fan in AIDA64 is obviously the CPU_FAN header. And the two fans into the CPU FAN/CPU OPT headers. If you dont have enough 4 pin headers on the motherboard and still want to control your fans you have 2 options:.

Similarly with the other AIDA64 system fan designations. Rear exhaust fan control is a disaster. Connect one fan to CPU Fan 1 and the other to CPU Fan 2 / OPT.

Cooler Master MasterFan PWM Hub - Supports up to 10 Fans (3-pin or 4-pin), Occupying only One 4-pin Motherboard Header (System Fan or CPU Fan) Types:. I cannot reduce voltage lower than 50%!. 1 x M.2_FAN connector (intended for M.2 SSD) 1 x CPU Fan connector(s) (to be used for CPU) 1.

If you have multiple CPU fan headers on your motherboard, try plugging the fan into a different slot. The three wire connectors are for small chassis fans with lower power consumption. Is it better to get a fan hub?.

The Corsair's temps are sitting at 60-69C° under load for both CPU and GPU while the MSI gets noticeably hotter (around 70-77 for GPU and 75-80 for CPU). The answer to that may affect your decision on which header to use and if you are short headers for your case fans. This is the header to use if you decide you want motherboard control of your radiator fans (for whatever reason).

See page 27 of your motherboard manual. Your board likely has CPU_fan, OPT_fan, and CHA_fan headers that each have different speed profiles (usually adjustable in bios or with Asus Fan Expert). 3-pin connectors are usually used for the smaller chassis fans with lower power consumption.

You can use it for a second fan on your CPU cooler if you have one or you can use it for a flowmeter/pump RPM sensing or even just for another case fan (like I have done). Your header is likely rated for one amp. On Asus, since it says AIO_Pump header, I'd.

Dec 18, 13 #4 Z. If 3-pin non-PWM fans are connected to this fan hub, this fan hub CANNOT give them extra PWM function. Stats and temps using CPU-Z, HWin, GPU-Z and NZXT CAM all read that the CPU is hitting 4800mhz, there's sufficient core voltage (1.250 approx), CPU does not go above 45c (around 30c idle) and Graphics Card under 'load' is.

In addition, the two fans need to be plugged into the same type of fan header. The case came with 3 fans installed on the hub. OPT will always run the same speed and CPU Fan and is not controllable on Asus boards.

4-pin connectors are usually used by CPU fans with higher power consumption. The reason that the manual tells you to connect your cooler fan to CPU_FAN is that by default, the BIOS is configured to control the speed of CPU_FAN based on the CPU temperature sensor, and you can expect updates the the BIOS to be configured that way too. CPU OPT FAN is the fan header I cant control, which sucks cuz my corsair is doing alot of noise at 00+ RPMs.

The only problem you may run into is the configuration of fan speed for that fan header in the motherboard's bios. The length of 37cm includes the fan splitter header. They will run at FULL SPEED.

Four Radiator Fans via Y-Splitters:. Then I thought I would try swapping the fans to the CPU_OPT header and the pump to the CPU_FAN header to see if that would allow me to take the fans down to zero on the theory that with the pump running and the CPU at idle, just the natural convective cooling from the radiator would be adequate (it seemed that the CPU_FAN header would not allow. Since I have a free CPU fan header, I am considering connecting the rear case fan to this header.

That can usually be disabled in the bios so the fan would run at full speed without monitoring. This sometimes fixes the CPU fan error. SYS_FAN is a fan header usually reserved for case fans.

CPU_FAN, CPU_OPT, 2xChassis FAN, AIO_PUMP, H_AMP_FAN) Corsair H115i Liquid Cooling (one connector coming out of the pump) Corsair Carbide 600C Case (It has three AF140L case fans). All 3 sys_fan headers are being used and the air cooler is using the cpu_fan slot. I would plug the pump into the pump header.

Well not really, all fans turn off when CPU temps are < 40. Fans and on-board fan headers are backwards compatible. Connect one adapter to CPU Fan 1 and the other adapter to CPU Fan 2.

The power cable for the hub is not connected. By default, anything connected to it will run at 100%. Your motherboard has a header for PUMP and CPU FAN / CPU OPT.

When connecting a three wire fan to a four pin fan header, the fan is always on;. Since it is a "CPU_OPT" header, it may be tied into the settings for the main CPU fan by default. Even though all 5 headers are 4-pin, from what I can tell, only the CPU_fan header is true PWM header.

Also the cpu-opt header is suitable for water pump and for 4 pin pwm fan. CPU Fan 2 / OPT can be left unused. NB is the north bridge chipset fan header.

Of course you would be controlling speed in groups this way. It makes more noise than my old Antec Tri-Cool, that was set to Low. I connected the 4-pin to CPU_OPT and in BIOS it shows rpm on CPU_FAN.

You probably should account for inrush current but the manufacturers already do that, well at least some do, so not that big of a worry most of the time. Two Radiator Fans without Y-Splitter:. Asus STRIX Z270E Motherboard (with the following headers:.

Anyway you could just connect the water pump fan (the block with wire connecter attached to it) to the optional CPU fan header. ThreeBulls PWM Fan Hub, PC CPU Cooling 4 PIN/3PIN Fan Power Cable Hub Splitter Adapter Sleeved PWM Case Fan Splitter for 12V Desktop Computer Cooler Case Fans 1 to 5 Way (15.7 Inch) 4.4 out of 5 stars 312. BTW I've found absolutely no difference between CPU_FAN and CPU_OPT when trying both.

The CPU header will likely be labelled "CPU Fan," but if it isn't, it's still easy to spot with its three holes for the fan's three-pronged plug. No answer in the manual. In fact, there are a number of ways to do so.

CPU = CPU CPU OPT = System 6 Pump Chassis 1 = System 3. I also explain long ryzen bo. If a motherboard says it has 2 fan headers (on the manufacturer's website and next to it in () it says ( 3pin, 4pin), does this mean there are two sets of those or one of each?.

The instructions to the H80iGT say that I have to connect the pump power cable to the CPU_FAN header on the motherboard and connect the fans that are attached to the radiator to the two connectors coming off the pump. Gigabyte boards have CPU_FAN or CPU_OPT. On most boards only the CPU and opt cpu fan headers are PWM.

The other 4 system headers probably can regulate fan rpm by varying voltage. My Strix Z270I itx board has 3 fan headers ():. Its recommended that the pump be connected to an alternative fan header on the motherboard such as.

MAKES TOO MUCH NOISE. The four wire connectors are for processor fans with higher power consumption. Manufacturers forget to say this a lot unfortunately.

Try an alternate CPU fan header. Here is what I was able to determine on my MB fan headers. Thermaltake Commander FX review vs PWM Y-splitter - How many fans can you add to each fan header?.

Dedicated fan pwm controller or buying a fan splitter and controling several fans from one header (usually used for front intake). There are 4 CHA_FAN headers. CPU, Chassis, and AIO Pump.Can the AIO header be used for a normal case/chassis fan?.

One labelled CPU_fan, one as CPU_OPT and three more as Sys_Fan. The only one that really makes a difference is the cpu fan header as it is usually failure monitored in the bios. The cooler is the Kraken X62 280mm, it's manual says to use CPU_FAN for the pump, but the mobo manual says use AIO_PUMP for the pump and CPU_FAN and CPU_OPT for the 2 rad fans I most likely won't change the pump RPM but I'd like to have the option to change it in CAM if it does end up being too loud at idle in my small case.

Despite their intended use as labeled in the manual, CPU_FAN and CPU_OPT are essentially the same thing - they are PWM headers. A three wire fan connecting to a four pin fan header:. If you use the CPU_OPT, would recommend you plug the rear case fan to that.

I always use the CPU fan as Gigabyte makes no distinction between the two other than name. And i have the cpu header and the cpu-opt header free for 2 fan's in push\pull configuration. Since that header is tied to the same sensor that drives your CPU fan, the rear fan will spin up at a rate proportional.

CPU_OPT is a optional fan header for the CPU area. When load is applied. However, if in doubt, just connect it to the standard CPU header.

Only have 2 chassis fan headers on my MB, so I decided to use the cpu_opt header for my last. According to the manual for Z170x Gaming 7 mobo, there are 5 fan headers on the mobo. Make sure and check the settings for it.

Can anyone confirm that the System #7 fan is actually the CPU_OPT header?. My motherboard has 6 fan headers and a CPU_OPT header. I don't think the header could support 4 fans from one header, but it was best deal I could find and then I only just reached the externally mounted fan cables (radiators mounted outside the case) as I thought the fan cables to be longer.

Its fan control is locked to CPU temp, it is restricted with shorter fan delays, and it cannot be controlled in the same way as the other headers. CPU and its mirror OPT were designed for a traditional air tower with two fans. Hello, Iv been working on my build and added some extra fans trying to achieve positive air pressure.

Each header should support 3-4 fans without an issue. My board in sig has all four pin headers but only those two are PWM. Opt cpu fan mirrors the CPU fan.