How big of a power supply do I need?

Hello,

How big of power supply do I need for this system? Changing what components would move your answer up or down significantly?

ASUS P9X79 Pro
Intel i7-3930K
64GB RAM GSkill
XFX Double D FX-787A-CDFC or EVGA Super-clocked 012-P3-1572 AR GTX 570
Crucial M4 SSD 512GB
Crucial M4 SSD 256GB
2 Caviar Black 1 TB (Mirrored)
HT | OMEGA eCLARO
2 LG WH14NS40

2 Dell 24" monitors 1900x1200 resolution (if it matters), 1 laser printer, 1 inkjet multifunction, wacom, keyboard and 5.1 speaker system (currently Klipsch, might be upgraded). Also have a Synology NAS connected to it via USB.

I was thinking about a Seasonic X-SERIES X-1050 until I saw a few other similar configurations from other users with lower wattages.

Let me know if there are any other factors that matter that will help you answer.

Thanks!

J
23 answers Last reply
More about power supply need
  1. Did you buy all those parts? what will be the main usage of this PC? a quality 600W PSU can keep up with that build.
  2. idroid said:
    Did you buy all those parts? what will be the main usage of this PC? a quality 600W PSU can keep up with that build.


    How did you caculate that a 600W power supply would work?

    I have not purchased them yet. The computer is being built to serve several purposes. The one driving the larger requirements is the need to run a ERP system in VMWare workstation (IOPS, RAM and cores are the performance differentiators). If I removed this requirement, the system could be built with 8-12GB Ram, a slower processor and 1 less SSD.

    J
  3. Not even a 600W Required, a True Quality 500W PSU will do the job. The GPU is the most consuming hardware of any PC build, HD 7870 at full load draws about 135W, The CPU and other stuff won't get near the 300W range at full load, so a 500W PSU is more than enough.
  4. You need to decide what gpu your using first. A 7870 uses 130w. A gtx570 uses 220w. Why an old 5XX series, why not the newer more efficient 6XX series?

    Either way a 600w psu would be more than enough for either.
  5. jwl2 said:
    How did you caculate that a 600W power supply would work?

    I have not purchased them yet. The computer is being built to serve several purposes. The one driving the larger requirements is the need to run a ERP system in VMWare workstation (IOPS, RAM and cores are the performance differentiators). If I removed this requirement, the system could be built with 8-12GB Ram, a slower processor and 1 less SSD.

    J


    I added the TDPs + ~150w

    Anyways.... if you haven't purchased those parts then DO NOT buy them because thats a very unbalanced build.

    http://www.tomshardware.com/forum/353572-31-build-upgrade-advice <---- fill that out
  6. My Corsair GS800 can easily pull the following components (so 1000+W is good only if you also want the ability to boost your car in a snow storm).

    Seriously,

    I run
    I7 3770K OCed
    GTX 560ti in SLI Oced
    2X SSD Drives
    2X HDD Drives
    G.SKill 8G RAM (2400)!!!
    oh, and I watercool the whole thing (which means I push voltage to a Swiftech commercial pump on top of that.

    ...and the PSU doesn't even sweat...so.

    I'm not showing off...i'm just making a point that 700W or 800W would be plenty if you ever considered going SLI in the next upgrade.

    If, however, you decided to make your PC a server, or install a crazy RAID rack with say 8+ disks...then ya, go for the 1000+W PSU.

    I used one of these when I calculated how much I needed for mine(and added 100-200W to be safe)...

    http://extreme.outervision.com/psucalculatorlite.jsp

    http://www.thermaltake.outervision.com/
  7. That's like the 3rd time today you've posted a brag session about your GS800, give it a rest already, it's a midrange CWT power supply.
  8. i think an XFX550W is good or a 600w corsair
  9. Assuming quality, 500W if you choose the HD7870, 600W if you go with the GTX570.
  10. jwl2 said:
    Hello,

    How big of power supply do I need for this system? Changing what components would move your answer up or down significantly?

    ASUS P9X79 Pro
    Intel i7-3930K
    64GB RAM GSkill
    XFX Double D FX-787A-CDFC or EVGA Super-clocked 012-P3-1572 AR GTX 570
    Crucial M4 SSD 512GB
    Crucial M4 SSD 256GB
    2 Caviar Black 1 TB (Mirrored)
    HT | OMEGA eCLARO
    2 LG WH14NS40

    2 Dell 24" monitors 1900x1200 resolution (if it matters), 1 laser printer, 1 inkjet multifunction, wacom, keyboard and 5.1 speaker system (currently Klipsch, might be upgraded). Also have a Synology NAS connected to it via USB.

    I was thinking about a Seasonic X-SERIES X-1050 until I saw a few other similar configurations from other users with lower wattages.

    Let me know if there are any other factors that matter that will help you answer.

    Thanks!

    J



    The bigger the better. I just bought the same Seasonic for a new system. Using a PSU that's barely big enough is like running your car in first gear all the time. It will run fine for a while but will definitely fail prematurely.
  11. Running a high quality psu at 40-50% load is like using a Lamborghini for the morning commute, you never allow it to do what it was designed for
  12. delluser1 said:
    Running a high quality psu at 40-50% load is like using a Lamborghini for the morning commute, you never allow it to do what it was designed for


    i understand what you mean.... seriously, i've been on that exact same situation :lol:
  13. True, for the GTX 570 add another 100W
  14. delluser1 said:
    Running a high quality psu at 40-50% load is like using a Lamborghini for the morning commute, you never allow it to do what it was designed for



    Possibly but you'll also never wear it out.
  15. ram1009 said:
    Possibly but you'll also never wear it out.


    That's where you're wrong, a PSU looses its capacity and efficiency if you don't load it at about 70% although 80% is recommended.
  16. ram1009 said:
    Possibly but you'll also never wear it out.

    Buy a GTX 680 , "it's the biggest" , do nothing but watch videos, it'll last forever :lol:
  17. idroid said:
    I added the TDPs + ~150w

    Anyways.... if you haven't purchased those parts then DO NOT buy them because thats a very unbalanced build.

    http://www.tomshardware.com/forum/353572-31-build-upgrade-advice <---- fill that out



    idroid,

    What do you mean by it is an "unbalanced build"?

    J
  18. jwl2 said:
    idroid,

    What do you mean by it is an "unbalanced build"?

    J


    if you haven't bought any of those parts fill this out: http://www.tomshardware.com/forum/353572-31-build-upgrade-advice i will take of the rest :sol:
  19. idroid said:
    if you haven't bought any of those parts fill this out: http://www.tomshardware.com/forum/353572-31-build-upgrade-advice i will take of the rest :sol:



    Idroid,

    I still end up in the same place. Is there something here that is not going to work or are you just not sure why I chose this configuration? The second part is easy for me to answer. It is combination of needing to run large business applications in VMWare (IOPs, RAM and cores matter), not being a gamer and wanting to listen to a decent sounding set of speakers while working.

    J
  20. jwl2 said:
    Idroid,

    I still end up in the same place. Is there something here that is not going to work or are you just not sure why I chose this configuration? The second part is easy for me to answer. It is combination of needing to run large business applications in VMWare (IOPs, RAM and cores matter), not being a gamer and wanting to listen to a decent sounding set of speakers while working.

    J


    Great!! now i just need a budget to work with and after i do that we can compare both builds so you can pick the one you like or mix them a little bit.
  21. geekapproved said:
    That's like the 3rd time today you've posted a brag session about your GS800, give it a rest already, it's a midrange CWT power supply.


    Seriously? You mad bro?
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