Does a hard drive pull power from the 12v line or the 5v line? I have a 465w PS with 30a on the 5v line and now I want to upgrade to a 750w PS that has 28a on the 5v. I have 6 300gb hard drives now and im going to get 5 more 500gb very soon. I don't want to make a mistake on the new PS. The PS I have and the new one are in the links below. Thanks for the help.
OLD PS. http://www.newegg.com/Product/Product.asp?Item=N82E16817194011
NEW PS http://www.newegg.com/Product/Product.asp?Item=N82E16817153036
OLD PS. http://www.newegg.com/Product/Product.asp?Item=N82E16817194011
NEW PS http://www.newegg.com/Product/Product.asp?Item=N82E16817153036