Right here: http://www.tomshardware.com/reviews/geforce-gtx-460-gf104-fermi,2684-13.html
The GTX 460 at load uses 250 watts of power. Ok, well, the Geforce GTX 460 has 2 PCI-E 6 pin connectors and the PCI-E slot. Each PCI-E connector can deliver up to 75 watts (while the 8 pin connectors can deliver up to 150) and the PCI-E slot in the motherboard can deliver up to 75 watts. So, 75*3 = 225 watts. How does the card use more watts than its connectors allow? If one of the connectors was an 8 pin connector there wouldn't be any confusion at all.
I know that the PCI-E connectors have their own dedicated 12V rails (or either a couple connectors share a 12V, but no other devices like hard drives or anything get power from that same rail), but I was under the impression the 6 pin connector just did not supply more than 75 watts.
The GTX 460 at load uses 250 watts of power. Ok, well, the Geforce GTX 460 has 2 PCI-E 6 pin connectors and the PCI-E slot. Each PCI-E connector can deliver up to 75 watts (while the 8 pin connectors can deliver up to 150) and the PCI-E slot in the motherboard can deliver up to 75 watts. So, 75*3 = 225 watts. How does the card use more watts than its connectors allow? If one of the connectors was an 8 pin connector there wouldn't be any confusion at all.
I know that the PCI-E connectors have their own dedicated 12V rails (or either a couple connectors share a 12V, but no other devices like hard drives or anything get power from that same rail), but I was under the impression the 6 pin connector just did not supply more than 75 watts.