Dread Lörd Kaolian wrote:
TirithRR the Eccentric wrote:
So, what is the point of the 8 pin PCIE connector if the added two pins when compared to the 6 pin PCIE connector are just a Ground connection, which already exists on pins 4-6 of the 6 pin PCIE? Just curious.
I don't know exactly why, but the 8 pin connector is rated at delivering 150 watts, while the 6 pin is rated at a maximum of 75. The wires are the same gauge usually, and those extra two pins really are ground pins near as I can determine, so yeah. that.
I was reading up on it a bit more last night, and read in a couple places that the 6 pin PCIE connector standard only required pins 1 and 3 to be powered with 12V (which explains why the double Molex to 6 pin adapter that came with my card didn't power up pin 2). The 8 pin standard had 1, 2, and 3 powered with 12V, which they said is why it was capable of 150W instead of 75W. And that users had run tests by putting 150W load on both the 6pin (with 1,2, and 3 at 12V) and 8pin and noticed no difference. All the 6 pin connectors on my PSU have 12V on 1, 2, and 3. Given that my PSU is capable of the load, and the pins are all there... I don't see any issue with me powering up the 8pin with a 6pin to 8pin/6+2pin adapter.
I finally got my adapter today and it's the wrong one... they sent me a 6 pin PCIE to 8 pin plug that's on the motherboard (EPS?) instead of 8 pin PCIE. They said they'll refund the price, but now I have to get another one. If I could find a small enough knife/file I'd be able to make this one work and end up with a free adapter. But I'm struggling to find a way to file off the corners of this inside pin.
Cut/Filed the corners and it fits now. Powers up ok, everything working fine. Edited, Mar 25th 2011 7:23pm by TirithRR