8 pin plugs on GT 300s

they are used on very high-end gpus nowadays. like the gtx 295 and 285. most psus dont have an 8pin so the company(evga, xfx, etc) packs either 2 6 pins to 1 8 or 2 molex to 8 pin. depends.
and some mobos take an 8 pin to power the cpu. some really very high end mobos(x58 classified, takes 2 8 pins to power the core i7)
 
So my PSU will probs need upgrading....I think i only got 2 6pins.... i wanted to use one of my old 8800 as a dedicated physX card....looks like a new PSU also 🙁


Maybe i could do 2 molex to 1x 8pin and one 6pin (since the new GT 300s have a 6pin AND an 8pin) then use the other 6pin on my 8800 .....hmmm
 
8 pin was also on the 2900XT. There is such a thing too as a 6 pin to 8 pin converter. Also be careful, as some PSUs have an 8 pin for server motherboards which is not the same as an 8 pin PCI-E. A good (Corsair, PC P&C) 550+W pSU should be enough for the GTX380 (or whatever it is called) assuming the rest of the system isn't absurd.
 
I wouldn't talk about what's good, bad, needed, etc until it arrives, we have no idea about the efficiency of the chip, and it isn't final what the power requirements would be as the only card sofar was an underclocked engineering sample and the 6+8 on the card displayed didn't even work, so wait for the retail part before discussing what's going to be needed. Could be more, could be less than you expect, but I wouldn't be making PSU decisions before they even test the first one.