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How much watts does my computer need?(PSU)

Thats why i have to change the psu aswell.
Specs:
AMD R9 390 8GB Sapphire Nitro Tri-X(according to this site http:// 375W but i saw 275W on other sites like this onehttp://)
Intel Core i5 3550(3,3GHz)
MSI B75A-G43
16GB RAM in total(DDR3)(4x4)
120gb SSD and 2tb hard disk
I dont know if its important, but of course im having a screen, a mouse, a keyboard, a headset, speaker.

Is 550W enough ? http://
15 answers Last reply Best Answer
More about watts computer psu
  1. Best answer
    550w should be enough. Just make sure to get a good brand like Seasonic or XFX.
  2. Is Cooler Master all right ? Its the one i linked in the article
  3. Max_2_ said:
    Is Cooler Master all right ? Its the one i linked in the article


    That psu is a tier 3. Not bad but not great either.
    http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

    The link is the tier list for psu's.
  4. That particular Cooler Master is OK, but not all that exciting due to not using Japanese capacitors, which have longer life and can handle higher temperatures.

    At this price range, I'd prefer this:

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (€69.90 @ Caseking)
    Total: €69.90
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2015-12-16 17:59 CET+0100

    For a few euros more, there are a lot of excellent options.
  5. Quote:
    For a few euros more, there are a lot of excellent options.


    I can spend a few more euros. what are you thinking of ?
  6. Max_2_ said:
    Quote:
    For a few euros more, there are a lot of excellent options.


    I can spend a few more euros. what are you thinking of ?


    The psu he linked is a high quality unit and is one of the brands I recommended. It's made by Seasonic but sold under the XFX name.
  7. Max_2_ said:
    Quote:
    For a few euros more, there are a lot of excellent options.


    I can spend a few more euros. what are you thinking of ?


    PCPartPicker part list / Price breakdown by merchant

    Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply (€83.44 @ Mindfactory)
    Total: €83.44
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2015-12-16 18:20 CET+0100

    SeaSonic is one of the best manufacturers in recent years, along with other names like Super Flower and Flextronics (this is not an exhaustive list). This PSU is semi-modular too, the XFX one above, also made by SeaSonic is not (I didn't want to pick a PSU for you that cost more unless you said it was OK to go above).

    The Corsair RM is OK (especially since that's a CWT-made one not Chicony), but nothing spectacular. The great Corsairs are the AX/HX and the higher wattage RMs.
  8. http://
    This Site now tells me that 650W is recommended for my graphic card.
    I just went to a shop, there they told me 550w could get close. Other people and some forums tell me its definetly enough. What should i do ? Who is right ?
  9. Max_2_ said:
    http://
    This Site now tells me that 650W is recommended for my graphic card.
    I just went to a shop, there they told me 550w could get close. Other people and some forums tell me its definetly enough. What should i do ? Who is right ?


    550w is definitely enough to power the system. A lot of sites are either inaccurate or give way to much overhead wattage.
  10. The maximum output of the GPU is 275W (and that's at the absolute max). I'd be comfortable with a rock-solid 550 like the ones we're recommending, but there's something to be said for giving yourself some space, if you can fit it into your budget. I'd much rather have, in this case, a rock-solid 550 rather than a so-so 650.

    Non-modular.

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply (€82.07 @ Amazon Deutschland)
    Total: €82.07
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2015-12-16 18:29 CET+0100

    Semi-modular:

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: SeaSonic 650W 80+ Gold Certified Semi-Modular ATX Power Supply (€101.89 @ Amazon Deutschland)
    Total: €101.89
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2015-12-16 18:30 CET+0100

    or

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply (€94.49 @ Amazon Deutschland)
    Total: €94.49
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2015-12-16 18:32 CET+0100
  11. If i decide to take the Cooler Master above, which is as you said tier 3, what disadventages do i have compared to the tier 1s that you listed. Like will my psu get loud often or what ?
  12. Max_2_ said:
    If i decide to take the Cooler Master above, which is as you said tier 3, what disadventages do i have compared to the tier 1s that you listed. Like will my psu get loud often or what ?


    Lower quality components, so greater likelihood of early failure, and slightly worse voltage regulation and the like. Tier 3s are perfectly usable -- they're not actual hazards to your PC like the bottom barrel PSUs -- but the PSU is the most important part of your PC and unless you're very tight with money, I always recommend choosing PSUs that are likely to have the longest life and the best odds of protecting your equipment. Clean power for your PC is like clean air for your lungs.
  13. Quote:
    I always recommend choosing PSUs that are likely to have the longest life and the best odds of protecting your equipment.

    Wait... Does that mean if my PSU dies everything else dies/gets damaged aswell ?
    Or do i just have to exchange the PSU then ?
  14. Max_2_ said:
    Quote:
    I always recommend choosing PSUs that are likely to have the longest life and the best odds of protecting your equipment.

    Wait... Does that mean if my PSU dies everything else dies/gets damaged aswell ?
    Or do i just have to exchange the PSU then ?


    No, it's a PSU that shouldn't take out anything with it if/when it fails (though anything can happen). It just could be better. Sometimes we have people who want to install real garbage. This isn't garbage, it's just kinda "meh" when more dependable PSUs are around the same price.

    If it fails inside the warranty period, you contact Cooler Master, you'll ship your PSU to them, wait for them to send another one back, and then install that one. If it fails outside the warranty period, you buy a new PSU.

    Your choice is a fine value PSU in the US, where it can be purchased for the equivalent of 44 euros. At 77 euros? If I'm spending that much on a PSU, I want one that I can likely still use in 5 years.
  15. Ok, got it ! Thanks for the detailed answer :)
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