Daisy-chaining fans to Molex

[Afrodisiac]

How much fans can you have daisy-chained together and attached to a single molex connector until they start underperforming/not getting enough power?

Not high performance fans, 1400RPM max.

[billdcat4]

How much fans can you have daisy-chained together and attached to a single molex connector until they start underperforming/not getting enough power?

Not high performance fans, 1400RPM max.

120mm?

I would say that you should be fine no matter how many you want to add, assuming that the PSU is powerful enough

[beerandcandy]

look at how much current the PSU supplies to the connector you are using and see how much current the fans use

[gl25nn]

Fans dont draw much. Startup will draw the most since motor windings look like a long wire at first. Current will be initially limited to the resistance of the windings. Typically well less than 1/2 an amp. If its this one (from your CM190 thread), then its .3A. How many fans really depends on what else is sharing the rail with the molex in question. Also depends on the quality of your PSU. If its an 18A rail, figure maybe 15A total before its a problem if its one of those multi-rail P'sOS.

[Afrodisiac]

Fans dont draw much. Startup will draw the most since motor windings look like a long wire at first. Current will be initially limited to the resistance of the windings. Typically well less than 1/2 an amp. If its this one (from your CM190 thread), then its .3A. How many fans really depends on what else is sharing the rail with the molex in question. Also depends on the quality of your PSU. If its an 18A rail, figure maybe 15A total before its a problem if its one of those multi-rail POS's.

The power supply is a Corsair VX550W. It has two sets of molex cables (with three connectors on each), so I wouldn't be daisy-chaining all 8 (5 YLs + 3 stock). I would be daisy chaining say 2 at a time.

I figured the Corsair VX550W could handle it. Specs are 6GB ddr3, Phenom II X3 720 @3.2GHz stock voltage, XFX 4890, single DVD drive and single hard drive.

[billdcat4]

The power supply is a Corsair VX550W. It has two sets of molex cables (with three connectors on each), so I wouldn't be daisy-chaining all 8 (5 YLs + 3 stock). I would be daisy chaining say 2 at a time.

I figured the Corsair VX550W could handle it. Specs are 6GB ddr3, Phenom II X3 720 @3.2GHz stock voltage, XFX 4890, single DVD drive and single hard drive.

do you know what voltage it draws from?
either way, with that awesome PSU you should be fine

Corsair VX550W Power Supply Review Review

[Afrodisiac]

It's a 52A on a single rail design. Monstrous.

[billdcat4]

It's a 52A on a single rail design. Monstrous.

You can run whatever you want, probably even another 4890, 5 fans, and 5 hard drives

[Afrodisiac]

You can run whatever you want, probably even another 4890, 5 fans, and 5 hard drives

Mhm. I'm pretty sure this CAN do 4890 CF easily. There's an OCZ 700W PSU that doesn't have as much Amps as this beast.

[gl25nn]

It's a 52A on a single rail design. Monstrous.

You're set, then. Love the Cosairs. I got the 650W, 52A (12V, Billdcat ). No worries about one overloaded rail causing the others to drop out.

[billdcat4]

You're set, then. Love the Cosairs. I got the 650W, 52A (12V, Billdcat ). No worries about one overloaded rail causing the others to drop out.

listen buddy, we all have Corsair PSUs

*look @ sig*

[gl25nn]

I think you misunderstood what I meant cuz I failed to quote this:

do you know what voltage it draws from?

I was just responding to your question about voltage, buddy.

[billdcat4]

I think you misunderstood what I meant cuz I failed to quote this:



I was just responding to your question about voltage, buddy.

yea, i know

52A should be enough for a very high end PC

I remember hearing about a 550VX at a show powering 24 hard drives or something

[randomizer]

You would burn out the wires before you ran out of current to power the number of fans you could daisy chain.