Page 1 of 2 12 LastLast
Results 1 to 10 of 19

Thread: Powersupply for 2x Titan X

  1. #1
    Join Date
    Feb 2017
    Location
    Germany
    Posts
    4
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default Powersupply for 2x Titan X

    Hi,
    I´m going to build a new system and I need some help with finding the right PSU:

    The system:
    2x Titan X Pascal (2x250 W)
    1x Xeon E3-1231v3 (80 W)
    HDD etc (~100 W)
    ______________
    ~680W

    So i thought 850W seems to be ok. (please correct me if I´m wrong)

    I´m using the gpus mostly for computation so i can get the cards to 50-100% for longer time periods.

    While efficiency is nice and green i´ve calculated that platinum vs. titanium saves me only 6€ a year if I´m running the pc for 8h * 365d at 100%. However titanium vs. bronze would save 40€ a year.

    Long story short i want to buy a realiable psu with at least platinum certificate. I´ve the following candidates:
    1. Seasonic Prime 850
    2. EVGA SuperNOVA P2 850
    3. Corsair HX850i
    4. Something else?


    advices are highly appreciated.
    Thanks in advance
    Last edited by DrVoidberg; 02-18-2017 at 01:27 PM.

  2. #2
    quest for silence's Avatar
    quest for silence is offline Silencer & heathen relic of a human (™ by OW)
    Join Date
    Sep 2013
    Location
    Italy
    Posts
    3,353
    Thanks Thanks Given 
    1,037
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by DrVoidberg View Post
    Hi,
    I´m going to build a new system and I need some help with finding the right PSU:

    The system:
    2x Titan X Pascal (2x250 W)
    1x Xeon E3-1231v3 (80 W)
    HDD etc (~100 W)
    ______________
    ~680W
    More likely ~500W, without overclocking.
    Best, Luca

  3. #3
    Join Date
    Jan 2016
    Location
    Canada
    Posts
    780
    Thanks Thanks Given 
    26
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Prime 850w. Might as well go all out with those Titans anyways.

    Btw, watercool them, mine throttles quite heavily...

  4. #4
    quest for silence's Avatar
    quest for silence is offline Silencer & heathen relic of a human (™ by OW)
    Join Date
    Sep 2013
    Location
    Italy
    Posts
    3,353
    Thanks Thanks Given 
    1,037
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by ridgid13579 View Post
    Prime 850w. Might as well go all out with those Titans anyways.

    Btw, watercool them, mine throttles quite heavily...
    ...how much power do you currently draw?
    Best, Luca

  5. #5
    Join Date
    Jan 2016
    Location
    Canada
    Posts
    780
    Thanks Thanks Given 
    26
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by quest for silence View Post
    ...how much power do you currently draw?
    Around 700w draw power out from the ax1500i, (NOT from the wall, but just system draw according to corsair link, appears to be quite accurate last time I checked with a clamp meter, the clamp meter read above 700, and thats power in) under load with one titan xp in.

    But I'm using a rather heavily overclocked 5960x, OP's using a E3-1231v3, so 850w should be plenty for his application

  6. #6
    quest for silence's Avatar
    quest for silence is offline Silencer & heathen relic of a human (™ by OW)
    Join Date
    Sep 2013
    Location
    Italy
    Posts
    3,353
    Thanks Thanks Given 
    1,037
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by ridgid13579 View Post
    Around 700w draw power out from the ax1500i
    Thanks!


    Quote Originally Posted by ridgid13579 View Post
    OP's using a E3-1231v3, so 850w should be plenty for both titans.
    Available web data report about less than 500W DC in gaming (AX1200i & 5820K), so more probably that not even a Prime 650 (or a much less expensive P2 650) will work flawlessly.
    Best, Luca

  7. #7
    Join Date
    Jan 2016
    Location
    Canada
    Posts
    780
    Thanks Thanks Given 
    26
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by quest for silence View Post
    Thanks!



    Available web data report about less than 500W DC in gaming (AX1200i & 5820K), so more probably that not even a Prime 650 (or a much less expensive P2 650) will work flawlessly.
    I wouldn't go for a 650 P2, especially when you got the cash for dual titan xp..

    Would it be enough most of the time? Yes. But it's not worthwhile to go 650w, considering everyone likes sticking leds in their pc nowadays and peripherals.

  8. #8
    Join Date
    Feb 2017
    Location
    Germany
    Posts
    4
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Thanks for the answers!
    Quote Originally Posted by ridgid13579 View Post
    Around 700w draw power out from the ax1500i
    So 750W would fit also?

    Quote Originally Posted by quest for silence View Post
    Available web data report about less than 500W DC in gaming (AX1200i & 5820K), so more probably that not even a Prime 650 (or a much less expensive P2 650) will work flawlessly.
    On kitguru they tested pascal sli with:
    - Corsair 1000W RMx Series Modular 80 Plus Gold
    - i7-6850K
    and measured 650W

    Nvidia website recommended 600 W for one Titan.

  9. #9
    Join Date
    Jan 2016
    Location
    Canada
    Posts
    780
    Thanks Thanks Given 
    26
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by DrVoidberg View Post
    Thanks for the answers!


    So 750W would fit also?



    On kitguru they tested pascal sli with:
    - Corsair 1000W RMx Series Modular 80 Plus Gold
    - i7-6850K
    and measured 650W

    Nvidia website recommended 600 W for one Titan.

    750w would be plenty as well.

    Only reason my figure is so high (700w for one titan) is because my cpu likes to... drink

  10. #10
    Join Date
    Feb 2017
    Location
    Germany
    Posts
    4
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by ridgid13579 View Post
    750w would be plenty as well.
    Great :-)
    as for my list above. I assume that all powersupplys are ok?
    I would buy the one wich is currently the cheapest.

Similar Threads

  1. in the market for a powersupply
    By xreaperx22 in forum PC Power Supply Discussion
    Replies: 15
    Last Post: 06-18-2017, 06:44 PM
  2. need UPS for activePFC powersupply
    By Captain rainbow in forum PC Power Supply Discussion
    Replies: 1
    Last Post: 09-12-2014, 05:16 AM
  3. AZZA Titan 900W PSAZ-900A14
    By haru15b in forum PC Power Supply Discussion
    Replies: 23
    Last Post: 11-01-2010, 06:02 PM
  4. Huntkey Titan 650W
    By garson in forum PC Power Supply Discussion
    Replies: 5
    Last Post: 04-20-2008, 01:36 PM
  5. HuntKey Titan/Ever Green 650W or Zalman (FPS group) ZM-460B?
    By Praeses in forum PC Power Supply Discussion
    Replies: 4
    Last Post: 05-18-2007, 03:08 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •