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Fits snug, about 5mm clearance between end of the card and hard drive cage. Also take off those crappy PCI clips and use the screws. I had trouble getting my last 4870 in with them on which is only like 9", this bugger is 10.6", with the clips off you can slot it in no hassle.* grabs GTX 260 manual
500w min, 2x 6 pin connectors with 12V rating of 36A