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  1.    04 May 2016 #11
    Join Date : Jul 2014
    Serbia
    Posts : 10,616
    W10 Insider + Linux

    They don't teach physics in schools nowadays ?
    Ohm's law:
    W=V*A
    A=W/V
    V=W/A
      My ComputersSystem Spec
  2.    04 May 2016 #12
    Join Date : Aug 2014
    Forever West
    Posts : 3,985
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Didn't see it mentioned but when increasing the size of the power supply keep in mind the power available in the wall sockets, usually have 15 Amp breakers but maybe 20 Amp. Add up the need for all the devices on each circuit. I had to run a separate line from the breaker panel and used 20 Amp breaker for it. Part of the need was for 2 to 4 computers, 2 monitors and 2 printers, the laserjet uses quite a bit.
      My ComputerSystem Spec
  3.    04 May 2016 #13
    Join Date : Jul 2014
    Serbia
    Posts : 10,616
    W10 Insider + Linux

    Quote Originally Posted by Berton View Post
    Didn't see it mentioned but when increasing the size of the power supply keep in mind the power available in the wall sockets, usually have 15 Amp breakers but maybe 20 Amp. Add up the need for all the devices on each circuit. I had to run a separate line from the breaker panel and used 20 Amp breaker for it. Part of the need was for 2 to 4 computers, 2 monitors and 2 printers, the laserjet uses quite a bit.
    That depends on voltage. 110v may need 20 amp breaker but on 220v only 10A.
      My ComputersSystem Spec
  4.    04 May 2016 #14
    Join Date : Aug 2014
    Forever West
    Posts : 3,985
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Quote Originally Posted by CountMike View Post
    That depends on voltage. 110v may need 20 amp breaker but on 220v only 10A.
    Good point since there's no information about where the OP is located.
      My ComputerSystem Spec
  5.    04 May 2016 #15
    Join Date : May 2015
    Smyrna, TN
    Posts : 306
    Win 10 Pro 64

    Quote Originally Posted by Berton View Post
    Good point since there's no information about where the OP is located.
    LOL......yes, I know what assume means, but based on his parts list pickings you almost have to believe he is in the US.......
      My ComputerSystem Spec
  6.    04 May 2016 #16
    Join Date : Jan 2016
    Posts : 228
    8.1 / 10

    Here ya go....have fun.

    eXtreme Power Supply Calculator

    For that build, I'd go with a minimum of 550. The 750 would be much better, and allow for expansion in the future, if you should so wish it, without having to buy a new PSU along with your new upgrade / addition.
      My ComputerSystem Spec
  7.    04 May 2016 #17
    Join Date : Jun 2015
    N.Y.
    Posts : 3,069
    Windows 10 Pro 64 bit

    I have similar brand of the GTX 970 is uses 145W needing 500W minimum PSU and 28A on +12V Rail.
    This power supply listed has (4 +12V Rails) = 61A Total http://www.evga.com/Products/Product...120-G1-0750-XR

    True the biggest importance when buying a PSU is making sure it will power the graphics card and yes always buy over the wattage needed.
    EVGA is good i use this one http://www.evga.com/Products/Product...220-G2-0750-XR (1 +12V Rail) = 62A Total

    I am not sure of the difference of having it in 4 +12V Rails
      My ComputerSystem Spec
  8.    04 May 2016 #18
    Join Date : Apr 2016
    Posts : 86
    10
    Thread Starter

    Quote Originally Posted by Vellinious View Post
    Here ya go....have fun.

    eXtreme Power Supply Calculator

    For that build, I'd go with a minimum of 550. The 750 would be much better, and allow for expansion in the future, if you should so wish it, without having to buy a new PSU along with your new upgrade / addition.
    Yes I'm in usa. I'll be buying this PSU for my build which is fully modular and gold certified:

    EVGA SuperNOVA NEX750G GOLD 120-PG-0750-GR 750W ATX12V EPS12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Power Supply - Newegg.com

    Now all I need is to buy a Win 7 key very cheap to install win 7, then upgrade to win 10.
      My ComputerSystem Spec

 
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