Do Fully Modular PSUs come with enough cables to power 4 fans?

[KindaHardcoreGamer]

I plan to use 4 4-pin fans. Will a fully modular power supply come with enough cables to power them?

 

[photonboy]

Probably, however there are lots of different PSU's available (see pcpartpicker).

*Also, why would you use a power supply for 4-pin fans?

4-pin fans are PWM so if you want fan speed control you need to use the motherboard. If you lack motherboard connectors you can use a SPLITTER to run two fans from the same fan header.

If you use the power supply director from the 4-pin MOLEX connector then you simply are applying 12V directly to the fan. For those fans you should be getting 3-pin, non-variable fans (i.e. 1000RPM, 12cm, 3-pin).

 

[TJ Hooker]

Any given PSU will list which cables it comes with. You will need a 4-pin to molex adaptors to run them off your PSU, but the PSU may come with those (my EVGA 750 G2 did anyway).

You realize that running your fans off your PSU will cause them to run at full speed constantly, right? You're better off buying a mobo with four 4-pin fan headers (or some fan header splitters if you don't have enough headers).

 

[Geekwad]

Some come with a few Molex to 3/4-pin adapters, but many do not. For that amount, it may be best to look for a controller as the 4-pin fan's advantage is fine control which you loose with connecting to the PSU.

 

[Paperdoc]

Replies above are right, of course. The only good reason for using the more expensive 4-pin PWM fans is that they can be controlled very well by mobo headers, and splitters allow one to use more fans that the number of headers on your mobo. MAYBE OP is mis-using the term. I have seen people use the label "4-pin fan" to mean one that actually has only two or three wires to it, and one wire set ends with a male 4-pin Molex connector (using only 2 of it pins) to connect directly to a PSU's female Molex output.

 

[KindaHardcoreGamer]

Probably, however there are lots of different PSU's available (see pcpartpicker).

*Also, why would you use a power supply for 4-pin fans?

4-pin fans are PWM so if you want fan speed control you need to use the motherboard. If you lack motherboard connectors you can use a SPLITTER to run two fans from the same fan header.

If you use the power supply director from the 4-pin MOLEX connector then you simply are applying 12V directly to the fan. For those fans you should be getting 3-pin, non-variable fans (i.e. 1000RPM, 12cm, 3-pin).

The motherboard I am getting is the Asus Maximus Viii Hero. Does that come with enough connectors?
If it doesn't, I can downgrade to 2 fans, assuming 2 fans is enough.

 

[Isokolon]

it comes with 4x4Pin for case fans + 2x4Pin CPU fans
you should be good.

 

[Isokolon]

it comes with 4x4Pin for case fans + 2x4Pin CPU fans
you should be good.

 

[Paperdoc]

Those four mobo fan headrs will do all you need, especially if you buy 4-pin fans. EVen better, IF you actually use more than 4 case ventilation fans, you can always buy 4-pin fan splitters to allow you to connect two fans to each such mobo header.

 

[Dark Lord of Tech]

No need for molex PSU power for your 4 pin fans , plus with molex you can't control the fan speed.

You board meets your needs.
1 x AAFP connector
2 x USB 3.0 connector(s) support(s) additional 4 USB 3.0 port(s)
2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
2 x SATA Express connector: gray, Compatible with 4 x SATA 6.0 Gb/s ports
1 x M.2 Socket 3 with M Key design, type 2242/2260/2280/22110 storage devices support (Supports both SATA & PCIE SSD)
4 x SATA 6Gb/s connector(s)
1 x CPU Fan connector(s) (4 -pin)
1 x CPU OPT Fan connector(s) (4 -pin)
4 x Chassis Fan connector(s) (4 -pin)
1 x Thunderbolt header(s)
1 x 24-pin EATX Power connector(s)
1 x 8-pin ATX 12V Power connector(s)
1 x System panel(s) (Q-Connector)
1 x 5-pin EXT_FAN(Extension Fan) connector
1 x MemOK! button(s)
1 x Thermal sensor connector(s)
1 x Power-on button(s)
1 x Reset button(s)
1 x Clear CMOS button(s)
1 x Water Pump header (4-pin)
1 x LN2 Mode jumper(s)
1 x ROG extension (ROG_EXT) header(s)
1 x 14-1 pin TPM connector

 

[photonboy]

Those four mobo fan headrs will do all you need, especially if you buy 4-pin fans. EVen better, IF you actually use more than 4 case ventilation fans, you can always buy 4-pin fan splitters to allow you to connect two fans to each such mobo header.

Yep.
While you can buy splitters if you need more than FOUR case fans that are all speed-controlled, you would need to check the FAN header amperage rating.

Let's say it was 1A (1000mA) and each fan max was 400mA. You could support up to TWO, but not THREE fans from the same header.