NVIDIA GTX 595 (picture+Details)

[MaddMuppet]

but my question was about 2 580 on the same board .... how much cooling and downclocking can we expect out of those things

That depends on what chips and cooling solution Nvidia has planned. That is if this card is real though and not something fake.

Why does anyone care about the power, heat, or stock clock speed. Only enthusiasts would purchase this card, the dollar for performance would likely make the GTX580 the nVidia card for the mainstream high performance buyers. The additional cost of a 1kW+ power supply to feed the card would also limit the amount of people who would seriously consider such a card.

Who is going to purchase a dual GF110 and leave it stock?

Exactly. If you are the kind of person that looks at power usage when buying a video card, then both the GTX590 and the ATI 6990 aren't for you. Both I would think will be at or over the 300Watt limit.