Hi, upgrading GPU to GTX 780. How much power will I need. i5 4670k, corsair vengeance 2x4gb, ASUS b85m-g
- Thread starter CT9
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- Jun 19, 2011
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Why would you want a 780 when a 970 and 980 are faster? A good 550w PSU would work for either the 970 or 980.
- Oct 30, 2004
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I use 850 watters on 780 builds to allow for adding a second card in SLI...... 600 watts works for a single card installation but there's no sense in getting anything less than 620-650 watts as price differences are tiny. However, twin 980s could prolly get by on a 750 watter since each card draws about 90 watts less.
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-980/specifications
500 + 165 = 665 watts for SLI
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications
500 + 145 = 645 watts for SLI
I'd use a 750 or 850 w/ overclocking
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications
600 + 250 = 850 and that's enough .... I have two OC'd 26% and the system pulls 745 watts from the wall (670 watt output)
$50 750 watt PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438028
$85 850 watt PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438030
The B2 isn't quite the unit the G2 and P2 are but at those prices hard to turn down.
tho as with the 780 question (why not a 980 ?) ... if you upgrading MoBo / CPU (wasn't clear if that's what ya had or that's what ya gettin) why not a 4690k or 4790k w/ Z97 ? I'm guessing that ya keeping the old MoBo / CPU but if you upgrading those consider that too.
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-980/specifications
500 + 165 = 665 watts for SLI
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications
500 + 145 = 645 watts for SLI
I'd use a 750 or 850 w/ overclocking
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications
600 + 250 = 850 and that's enough .... I have two OC'd 26% and the system pulls 745 watts from the wall (670 watt output)
$50 750 watt PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438028
$85 850 watt PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438030
The B2 isn't quite the unit the G2 and P2 are but at those prices hard to turn down.
tho as with the 780 question (why not a 980 ?) ... if you upgrading MoBo / CPU (wasn't clear if that's what ya had or that's what ya gettin) why not a 4690k or 4790k w/ Z97 ? I'm guessing that ya keeping the old MoBo / CPU but if you upgrading those consider that too.
the other specs listed are the ones I already have, along with a gtx 760. Which I hope to upgrade.TRENDING THREADS
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