Itz funny bcz ask anyone they use 700 watt powersupply for SLi and every gtx 260 will require same power. 500watt is enough if u use it on a high end system. I think ur PSU has some problems.
And for XFX GTX 260 see this
http://www.tweaktown.com/reviews/148...ion/index.html
Here u will see with complete system without monitor it requires only 260watt.
And in their own website it said it require 500watt PSU
http://www.xfxforce.com/en-gb/produc...es/260gtx.aspx
So what do u say? I think ur PSU has some defects and go to UCC to change it as soon as possible.
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