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What size psu do I need?

Tags:
  • Power Supplies
  • Crossfire
  • Corsair
  • Intel i5
  • Components
  • Product
Last response: in Components
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July 13, 2012 2:06:28 AM

I want to have crossfire xfx 6870's(only one for now), and a i5 2500k overclocked. Will a 750w corsair tx750 work for that?

More about : size psu

July 13, 2012 2:31:28 AM

On newegg it says sli-yes but crossfire-no how does that work they both use the same power.
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July 13, 2012 2:38:42 AM

The SLI-certified/ready and Crossfire-certified/ready are equally meaningless. A vendor can send in their PSU to either AMD or nVidia who look at it, call it pretty, slap a sticker on it and send it back. Look through the list of SLI-certified and crossfire-certified PSUs, most of them should never run more than a pair of 6450's in crossfire.

Take this unit for example
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
SLI ready and crossfire ready, probably wouldn't survive it's first experience with either. With 20A on it's 12 V rail, my 955 and 4850 would push it over it's limit, let alone crossfire or sli.
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