Xbox 360 phat fan replacement

[Valdas941]

Hello, i have an oldy xbox 360 phat, and i want to replace fans with more efficient ones, but the ones i have has 3 pin connectors, and the xbox dual one has 4 pin, if my fans are high flow like 4 times more flow than original can i just connect those 3 pins without any risk? or do i need to replace them to the 4 pin?

 

[Valdas941]

here are some pics
http://imgur.com/JTFOjLS
http://imgur.com/yyEJNeF

 

[Kurz]

Ebay search the Model numbers of the fans...

 

[Valdas941]

Ye but i have those 3 pin ones, but they are from server machine, very high flow