GTX 770 quick question

Discussion in 'Mac Pro' started by enny001, Apr 6, 2015.

  1. enny001 macrumors member

    Joined:
    Apr 30, 2013
    #1
    Can i use PNY 4GB GTX 770 Video Card Enthusiast Edition in my mac pro 2009 with mac supplying power i already have 5770 and 550to planing to take 550 out and use that power cable on 770

    Thanks
     
  2. philliplakis macrumors member

    Joined:
    Nov 19, 2014
    Location:
    AUS
    #2
    Hey

    The 770 will need a 8pin and 6pin cable's connected so you won't be able to run both straight from booster cables.

    If you have 2 spare data drives, i suggest you get the following
    2x Sata to Molex
    1x Dual Molex to 6pin

    and use that for the 5770

    You will also need a 6pin to 8pin cable for the 770.
    This is not a safe way for powering the card for Gaming, If its for compute reasons it will be fine.
     
  3. Pieterr macrumors regular

    Joined:
    Mar 22, 2015
    Location:
    The Netherlands
    #3
    No. A single 6-pin cable will provide up to 150W.

    GTX 550 Ti: 116W (1x6-pin)
    HD 5770: 108W (1x6-pin)

    GTX 770: 230W (1x8-pin + 1x6-pin)
     
  4. IowaLynn macrumors 6502a

    IowaLynn

    Joined:
    Feb 22, 2015
    #4
    Another way to add up the power supplied:

    PCIe slots each provide 75W
    6-pin cable plug on motherboard is 75W
    8-pin cable sources provide 150W

    The first 6-pin could be said to be "150W" but only because 75W + 75W

    Hope I am not being fussy.
     
  5. Pieterr macrumors regular

    Joined:
    Mar 22, 2015
    Location:
    The Netherlands
    #5
    No you're not. I could have made my reply more complete.
    This Watt-stuff is confusing at first, but easy to understand once you grasp it (like most things in life). :)
     
  6. enny001, Apr 6, 2015
    Last edited: Apr 6, 2015

    enny001 thread starter macrumors member

    Joined:
    Apr 30, 2013
    #6
    hi

    Thanks for the help guys i forgot to mention i will be using external power supply so my mac can have breathing room since i have external hd raid and The Wave Control Panel connected runing resolve. I am not sure how much power they need to run and placing gtx 770 and 5770 and possibly 550ti when i clear some space by modification i thing external power is the best option and i really don't care about how my mac look as in modification i will make it nice my goal is more cuda for resolve.

    1- So basically PNY 4GB GTX 770 Video Card Enthusiast Edition will work with external power

    2- Enthusiast Edition is there a difference between non Enthusiast Edition

    3- GTX Evga 670 4gb or PNY 770 any recommendations here. 3- GTX Evga 670 4gb or PNY 770 any recommendations here. They both are somewhat matched in cuda cores

    Thanks Again guys
     
  7. Surrat macrumors 6502

    Surrat

    Joined:
    Jun 20, 2014
    Location:
    United States
    #7
    The 770 has the exact same GPU as the 680 does. The improvements on the 770 are in vram speed and power usage. So, when you want to compare, think of a 670 vs a very fast 680.
     
  8. enny001 thread starter macrumors member

    Joined:
    Apr 30, 2013
    #8

    Hi me again quick question I took my gtx 550 out now i have one 6pin free and one free data drive can i run my 770 just on this

    Thanks
     
  9. Synchro3 macrumors 65816

    Synchro3

    Joined:
    Jan 12, 2014
    #9
    No. You need the power from two free data drive.
     
  10. Pieterr macrumors regular

    Joined:
    Mar 22, 2015
    Location:
    The Netherlands
    #10
    Buy a dual molex to power the 8-pin of your 770.
    http://www.frys.com/product/6969147
    Power the 6-pin using the (now) free 6-pin.
     
  11. enny001 thread starter macrumors member

    Joined:
    Apr 30, 2013
    #11

    from where will 8 pic draw the power?
     

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