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What Power supply would I need for my build?

Hello TH Members!

I'm going to buy a new PC, I would like to build it myself. I have found all the parts I would like to have, but I'm having a bit of trouble finding the right PSU.
I was thinking of a 850 Watt power supply - XFX ProSeries Core Edition FW

Parts I'm going to use:
Mobo - ASUS Maximus VI Formula
CPU - i7 4770K
GPU - R9 290X
RAM - Kingston HyperX Beast 1600Mhz (8 GB)
HDD - Western Digital Black (1 TB)

In the future I might add an H100i for watercooling.

Thanks for your time

-Chili
12 answers Last reply Best Answer
More about power supply build
  1. Specs?
  2. Specs are posted, I just found it easier to type in full screen by editing it, instead of typing it all in the mini sidebox (:
  3. 550w +80 bronze is fine.
    Get a semi-modular one.
    Something like this
  4. Wow much overkill but anyway a 780ti would be better in that price range
  5. vmN said:
    550w +80 bronze is fine.
    Get a semi-modular one.
    Something like this


    Are you sure? the R9 290X uses about 380 Watt (Under load) max just by itself, then there's CPU as well, fans and I would like to be future proof for the H100i. 520 Watt sounds a bit too little o:
  6. Roxas_Boy said:
    Wow much overkill but anyway a 780ti would be better in that price range


    I would like to stick with the R9 290X, I think it's a good card for the price, also I would like to see how AMD's Mantle API will affect performance. Also, I would hope to have a future proof rig here
  7. Chili 93 said:
    vmN said:
    550w +80 bronze is fine.
    Get a semi-modular one.
    Something like this


    Are you sure? the R9 290X uses about 380 Watt (Under load) max just by itself, then there's CPU as well, fans and I would like to be future proof for the H100i. 520 Watt sounds a bit too little o:

    100%.
  8. vmN said:
    Chili 93 said:
    vmN said:
    550w +80 bronze is fine.
    Get a semi-modular one.
    Something like this


    Are you sure? the R9 290X uses about 380 Watt (Under load) max just by itself, then there's CPU as well, fans and I would like to be future proof for the H100i. 520 Watt sounds a bit too little o:

    100%.

    Well I can't help but ask why it so is that I can use only 520 watt when the GPU almost uses 380 watt when under load, cpu on load as well + fans running and possibly an H100i, RAM draws a bit as well, would you be so kind and explain how that is possible? I can't really see how it would work with just 520 watt
    Thanks
  9. Alright, I just checked a site where I added all the stuff I wanted, all the needed components and extras like the H100i and Fans, and it calculated the the needed PSU to have 550 watts, but I still don't get it if the R9 290X can use up to 370-380 watts at peak performance? Another site I tried came with the result of 750 watts.
  10. I've thought of it, and if 550 watts can do it, I think I'll go with a corsair PSU (CX750M) 750 Watt
  11. Best answer
    750w is a huge overkill.
    If you dont feel a 520w will be able to support it, get a 600w +80 bronze.
    You can then go for full-modular for easier cablemanagement
  12. vmN said:
    750w is a huge overkill.
    If you dont feel a 520w will be able to support it, get a 600w +80 bronze.
    You can then go for full-modular for easier cablemanagement


    Alright man, thanks a lot for your help!
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