- 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: Case Fan Accessories; Colors: Black; Length: N/A; Specifications: If 3-pin non-PWM fans are connected to this fan hub, this fan hub CANNOT give them extra PWM function. They will run at FULL SPEED.
- Ok, I'm debating what the volages are supposed to be for a motherboard fan header. Usually there are 3 pins on a fan header. Since a power supply supplies 5v, 3.3v, and 12v, you would think that the fan header would output a combo of these voltages. I know that one pin will be the ground. The other 2 on older systems I think would be 5v and 12v.
Select a 'FAN SPEED' mode: MAXMUM: Always run at maximum speed. AUTOMATIC: According to system temperature. CUSTOM: Set up base on personal preference. Options of CUSTOM: FAN START TEMP: The temperature when fan starts spinning. FAN STOP TEMP: The temperature when fan.
Ok, so the motherboard i'm getting has the following:
~4 pin CPU fan header labeled CPU_FAN(I already know this is where the fan from the heatsink goes)
~3 pin power fan header labeled PWR_FAN1
~3 pin system fan labeled SYS_FAN1 (the mobo manual states that there are two of these when in fact there is only one...I think they accidentally included the PWR_FAN)
~4 pin system fan labeled SYS_FAN2
Anyway, my questions is this:
is there really any difference between the system fan header and the power fan header? On the manual, the specs for the SYS and PWR fan are the same...so something must be different. I plan to have 3 fans (rear output, front intake, and side intake). I'm still looking at cases, but after seeing this, i'm wondering how i'm supposed to know how many pins the fans that come with the cases have. The case i'm settling on right now only has a rear fan which is fine with me.
The motherboard i'm talking about is the GIGABYTE GA-P55-USB3
The three fan ordeal is assuming that I can take the cone (or ventilation shaft I guess its called) off of the inside panel (which I may need to do anyway as i'm sure it will get in th way of the heatsink which will either be the Cooler Master 212+ or the Arctic Freezer 7 Pro). Don't know if it's attached using screws or those annoying pins you can't take out without a hammer, and I don't know what size fan I can replace it with if any. I REALLY like the case and wouldn't mind having to buy two more fans to put in it, and looks like it'll leave me room for adding a custom Window i've designed. I'd prefer not to get a different case, but will do so if I have to, lol.
COOLER MASTER ELITE 335
Anyway, my first build is coming along nicely and when i'm ready, i'll post the specs in a new thread just to make sure i'm not getting things I don't need (i have a habit of going overboard sometimes ) Thanks for the help!
PS,
actually, while we're talking about this mobo, the manual shows that 2 of the SATAII connectors are controlled by Gigabyte SATA2 and the remain six are controlled by the P55/H55 chipset...what's the big difference?
Ok, i'll stop adding questions now...sorry, lol.
~4 pin CPU fan header labeled CPU_FAN(I already know this is where the fan from the heatsink goes)
~3 pin power fan header labeled PWR_FAN1
~3 pin system fan labeled SYS_FAN1 (the mobo manual states that there are two of these when in fact there is only one...I think they accidentally included the PWR_FAN)
~4 pin system fan labeled SYS_FAN2
Anyway, my questions is this:
is there really any difference between the system fan header and the power fan header? On the manual, the specs for the SYS and PWR fan are the same...so something must be different. I plan to have 3 fans (rear output, front intake, and side intake). I'm still looking at cases, but after seeing this, i'm wondering how i'm supposed to know how many pins the fans that come with the cases have. The case i'm settling on right now only has a rear fan which is fine with me.
The motherboard i'm talking about is the GIGABYTE GA-P55-USB3
The three fan ordeal is assuming that I can take the cone (or ventilation shaft I guess its called) off of the inside panel (which I may need to do anyway as i'm sure it will get in th way of the heatsink which will either be the Cooler Master 212+ or the Arctic Freezer 7 Pro). Don't know if it's attached using screws or those annoying pins you can't take out without a hammer, and I don't know what size fan I can replace it with if any. I REALLY like the case and wouldn't mind having to buy two more fans to put in it, and looks like it'll leave me room for adding a custom Window i've designed. I'd prefer not to get a different case, but will do so if I have to, lol.
COOLER MASTER ELITE 335
Anyway, my first build is coming along nicely and when i'm ready, i'll post the specs in a new thread just to make sure i'm not getting things I don't need (i have a habit of going overboard sometimes ) Thanks for the help!
PS,
actually, while we're talking about this mobo, the manual shows that 2 of the SATAII connectors are controlled by Gigabyte SATA2 and the remain six are controlled by the P55/H55 chipset...what's the big difference?
Ok, i'll stop adding questions now...sorry, lol.
4-Wire Pulse Width Modulation (PWM) ControlledFans
Motherboard CPU Fan 4 Pin headerConnector.
| Pin | Name | Color |
|---|---|---|
| 1 | GND | black |
| 2 | +12VDC | yellow |
| 3 | Sense | green |
| 4 | Control | blue |
Motherboard Fan Header Amps
Aux Fan Header On Motherboard
For some AMD cpu fans:
| Pin | Name | Color |
|---|---|---|
| 1 | GND | black |
| 2 | +12VDC | red |
| 3 | Sense | yellow |
| 4 | Control | blue |
Notes
- Colors may change.
- Chassis and CPU fans may use either 3-pin or 4-pin powerconnectors. 3-pin connectors are usually used for the smallerchassis fans with lower power consumption. 4-pin connectors areusually used by CPU fans with higher power consumption. Fans andon-board fan headers are backwards compatible. Proper fan connectorplacement is shown in the figures below:
- Fan has a 3-pin power connector; desktop board has a 4-pin fanheader: Note: when using a 3-pinpower connector with a 4-pin fan header, the fan will always be on;there is no fan control.
- Fan has a 4-pin power connector; desktop board has a 3-pin fanheader: