Power draw of beefy fan on Mobo

[omar.ghosn]

Hi,
I have 2 powerful case fans that draw about 36 watts each...they are like little jets They are rated at 12v and 3 amps...
1) Can a motherboard handle 1...or even 2 of these? I know very little about electrical components but its seems like the amperage here is the issue. I could connect directly to PSU/molex though
2) I also bought a general AC adapter for fans but its rated at 12v and 2 amps...and the adapter is heating up...is the fan trying to draw the electricity in faster?

 

[Rogue Leader]

Motherboard fan headers are rated for 1amp. DO NOT connect those fans to a motherboard 3 pin connector.

You are also overloading that AC adaptor, don't do that.

Why would you use such powerful fans, they are probably overkill and sound like jet engines.

 

[TJ Hooker]

What exact fans are we talking about here? I can't imagine any fans designed to be used as case fans would be that powerful.

 

[omar.ghosn]

Thanks for the warning about the mobo
You're right they are loud but I have a mining rig that is overheating in its enclosure and these 2 fans move a high cfm
Will look for a better AC adapter...but I feel connecting to molex should be fine, right?

 

[Rogue Leader]

Thanks for the warning about the mobo
You're right they are loud but I have a mining rig that is overheating in its enclosure and these 2 fans move a high cfm
Will look for a better AC adapter...but I feel connecting to molex should be fine, right?

Yeah you can draw 3 amps form the Molex no problem. You won't have any speed control but in your case that doesn't matter.