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Gigabyte R9 280X OC Windforce PSU requirement

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Last response: in Graphics & Displays
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August 21, 2014 2:14:19 PM

Hi guys,

I will buy the Gigabyte R9 280X OC windforce for my first PC build and I am a bit concerned about my PSU sufficiency. What Gigabyte recommends is a minimum of 600W and I bought the Seasonic G650. Although this PSU meets the minimum requirements, the 50W headroom seems a bit tight. In the end I feel that I have skimmed on my PSU.
So my question to you hardware experts, should I return the G650 and get the G750 instead, or is it not worth the extra money and I should just keep the 650?

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August 21, 2014 2:16:23 PM

Your 650W Seasonic is enough with overclocking headroom. A good quality 550W will be fine with a R9 280X.
Going with Seasonic is not skimping, it is one of the best brand to buy.
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August 21, 2014 6:48:09 PM

As Suztera says, you should be fine with that PSU.

If you'd like to increase your power-overhead the 750w unit is also a good choice as it will perhaps increase your systems upgradeability, but ultimately your 650w unit will provide ample power for the setup.

Generally, don't hesitate to go with an 'overpowered' PSU. The unit will only supply what power is necessary for the system plus a 'bleed' of whatever percentage of efficiency less than 100% it is rated at (most PSUs are somewhere around 80%-90% efficient). What that means is an 'overpowered' PSU won't really result in increased energy bills (only by a slight amount).
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August 22, 2014 12:24:13 AM

Thelps said:
As Suztera says, you should be fine with that PSU.

If you'd like to increase your power-overhead the 750w unit is also a good choice as it will perhaps increase your systems upgradeability, but ultimately your 650w unit will provide ample power for the setup.

Generally, don't hesitate to go with an 'overpowered' PSU. The unit will only supply what power is necessary for the system plus a 'bleed' of whatever percentage of efficiency less than 100% it is rated at (most PSUs are somewhere around 80%-90% efficient). What that means is an 'overpowered' PSU won't really result in increased energy bills (only by a slight amount).


About the upgradeability, I do plan to upgrade my pc in the future. However, by ugrade just I mean to replace the single R9 280X with whatever-new-model that will be released in 2 - 3 years. I'm convinced that I will not do any SLI or XFire upgrade in the future. With this in mind, is 650W sufficient?
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August 22, 2014 4:06:10 AM

FumuFun said:
Thelps said:
As Suztera says, you should be fine with that PSU.

If you'd like to increase your power-overhead the 750w unit is also a good choice as it will perhaps increase your systems upgradeability, but ultimately your 650w unit will provide ample power for the setup.

Generally, don't hesitate to go with an 'overpowered' PSU. The unit will only supply what power is necessary for the system plus a 'bleed' of whatever percentage of efficiency less than 100% it is rated at (most PSUs are somewhere around 80%-90% efficient). What that means is an 'overpowered' PSU won't really result in increased energy bills (only by a slight amount).


About the upgradeability, I do plan to upgrade my pc in the future. However, by ugrade just I mean to replace the single R9 280X with whatever-new-model that will be released in 2 - 3 years. I'm convinced that I will not do any SLI or XFire upgrade in the future. With this in mind, is 650W sufficient?


650W should be fine unless Nvidia/AMD plan to increase power consumption of their whole lineup for the next 2-3 years which i doubt. You could probably continue to use that for maybe 7 years. After that I would replace it.
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