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Can you have TOO MUCH power from your PSU?

#1TheBorderColliePosted 4/25/2014 8:03:07 PM
What I mean is that I'm considering going from a Corsair Modular TX650M to a Corsair Modular TX750M....the thought being that it's only $20 more to do so and I really don't want to be short in a couple of years when I upgrade the video card or whatever.

Is that a good trade-off? Is there any downside to it if I even put in an 850 watt TX?
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#2LordSeiferPosted 4/25/2014 8:04:37 PM(edited)
no. it wont draw what it doesnt need.
only downside would be more expensive and if you bought a worse quality one then its worse, but if comparable quality then its the same
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#3VIP86Posted 4/25/2014 8:07:20 PM
If you plan on getting 2 graphics cards, then 750 will do fine. It's really up to you. 20 more bucks for a 750 watt is no big deal. If you plan on only having 1 card at all time, then 750 is a waste, but it will last you a long time.
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#4TheBorderCollie(Topic Creator)Posted 4/25/2014 8:09:54 PM
LordSeifer posted...
no. it wont draw what it doesnt need.
only downside would be more expensive and if you bought a worse quality one then its worse, but if comparable quality then its the same


I was told that the Corsair TX series was the better product (versus their CX series). So this would be going from TX 650 to either TX 750 or 850. It's $20 more total to go from 650 to 750 and it's $30 total to go from 650 to 850.
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#52Dhas_a_MIGRANEPosted 4/25/2014 8:12:53 PM
Even if it's only $10 I wouldn't get the 850 over the 750. 750W is plenty for two cards, and three cards in SLI is just silly.
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#6KOTRwhoopsPosted 4/26/2014 2:24:43 AM
Something to bear in mind.

I only have a 750CX and I have two 670s hooked up no problem.
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#7Flaktrooper123Posted 4/26/2014 2:31:01 AM
No you don't, you won't be spending energy for something you don't use. If you only use for example 400W, then there will be hardly a difference in power consumption whether you are using a 600W or a 750W PSU, assuming same efficiency rating.
#8x ShadowPosted 4/26/2014 3:25:52 AM
PSUs have max efficiency at about half their rated capacity. Also not needing more than 750 for sli is false. At pc part picker my 780 sli setup is rated at 788
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#9SlaynPosted 4/26/2014 4:05:30 AM
I have two 660's running on a 650w corsair.
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#10urtvPosted 4/26/2014 5:54:17 AM
x Shadow posted...
PSUs have max efficiency at about half their rated capacity. Also not needing more than 750 for sli is false. At pc part picker my 780 sli setup is rated at 788


http://pcpartpicker.com/p/3yM32

help me out here.still need 7 watt to break 750 even with 780 ti sli