is this power supply going to work good with my system?

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AgentTran


You will have to buy your Power Supply right away, if you're planning on running the second 780 anytime soon.
Second, the current Power Supply you have is probably not efficient nor reliable.

I wouldn't run it with even the 6670, so I say to replace it urgently with one of my recommendations in my post above.
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AgentTran

AgentTran

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Well for $100-150, you will need a pretty beefy Power Supply to run your dual-780's.
This will probably run you at about 850W, on a quality Power Supply.

Here's a good recommendation.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX ProSeries 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($140.98 @ SuperBiiz)
Total: $140.98
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-11 21:19 EDT-0400)

That is on the more premium side of things though.
If you're looking for the cheapest alternative that will get the job done however, then this is your best bet.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: SeaSonic M12II 850W 80+ Bronze Certified Semi-Modular ATX Power Supply ($109.99 @ Amazon)
Total: $109.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-11 21:20 EDT-0400)
 
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farhanorakzai

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i currently have an xtreme gear 700w that i received with my cyberpower pc. i have changed the cpu to an i5 3570k from fx 8120 and the gpu to a gtx 780 from hd 6670. do i urgently need a new psu?
 
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AgentTran

AgentTran

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Wow, in that case you've decreased your performance massively.
Though I wouldn't recommend a downgrade of this caliber ever, it does reflect your budget and that's your personal matter.

In that case, your "xtreme gear" Power Supply should get the job done, but don't count on it to be reliable or efficient. I've never heard of the brand nor is it in the tier supply list, so it would be risky.

On a side note, DO NOT get the HD 6670. It's a very low power GPU and there are many more good options out there. When I say low power, I also mean low performance. In modern games it won't hold well on anything more than Medium.
 
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farhanorakzai

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that's the power supply i already have and want to upgrade it to 850/1000w and i used to have the 6670 but i upgraded it to the gtx 780. im asking how urgently i need to buy a new power supply, and if this one will hurt my components
 
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AgentTran

AgentTran

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You will have to buy your Power Supply right away, if you're planning on running the second 780 anytime soon.
Second, the current Power Supply you have is probably not efficient nor reliable.

I wouldn't run it with even the 6670, so I say to replace it urgently with one of my recommendations in my post above.
 
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Solution
geofelt

geofelt

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For a single GTX780, 700w is more than enough.
Your psu may not be top quality, but I would go ahead and use it. If you experience graphics issues or artifacts, then the psu may not be delivering advertised power.
But... no damage should come to your parts.

A comment was made to the effect that your change from a FX-8350 has hurt your performance MASSIVELY. I doubt that, but would you comment on the difference you actually see.
 
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Dark Lord of Tech

Dark Lord of Tech

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PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 1000G2 1000W 80+ Gold Certified Fully-Modular ATX Power Supply ($166.82 @ Newegg)
Total: $166.82
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-11 21:33 EDT-0400)

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AgentTran

AgentTran

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He specified a FX-8120, not the FX-8350.
The 8120 will surpass the 3570K in a few tests, but overall the i5 is better.
This is also factoring in that the 3570K has only 4 physical cores, but the FX-8120 has 8 physical cores and in rendering and encoding benchmarks, the 3570K wins.

But, keep in mind that I don't mean that the FX-8120 is a horrible processor. It just isn't as good as the 3570K.
http://www.anandtech.com/bench/Product/701?vs=434
 
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