Sorry i don't know the actual stats some one told me once but  now i can't recall then but i do remeber don't go over  2 amps if he didn't keep trying to make it work , turning it off, unplug etc  then doing a hardware reset should fix it .

 fans have  to be below 2 amps for the S5 these work  just fine on them i use them on my S5's http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s00  I have OC with two of these  fans on one S5 with no temps over 60 c so i know they work well . Sense i don't like OC i usually dont much but i run two S5 once @ 400 for two days. HW error were low enough and no temps ever went over 60 C but most of the time or all of the time i keep my S5 at 350  unless something goes a mess then il OC them just to get back on track . that's if speeds drop for no reason etc  and a reboot won't fix it. if this helps it doesn't have to be a PCEI cable most fan come with the right converter plug or molex and even  G-blade does it just plug it in using one of the Sata plugs from the PSU that has the 4 pin molex on one end all ATX psu come with that unless you buy oem, the fan all most all ways comes with the right converter plug .


with the fans I use he needs two and do it push pull which make better sense then have one and stand them up it does lower temp 3 to 4 degree or more standing them up using a box fan didn't work for me it made the S5 temps go up and work harder .



IN fact atm  all my S5 use one of these each http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s00 as push and one of these as pull http://www.amazon.com/gp/product/B00A460TK6?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00  i used to have two http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s00  Phillip made a post to some else about noise so i tried it and it work well for me on 4 S5 , i have 9 miner in my house atm I'm about to my limit i want ever .



last thought these http://www.amazon.com/gp/product/B00KFCRATC?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00 as pull  with one http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s00  but its little bit nosier. I have yet to try two http://www.amazon.com/gp/product/B00KFCRATC?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00