Saw a 6950 going for cheap, £100. Made me wonder about all those cards that have two pci-e power connecters that have been going on sale recently.
How would a 6950 with one power connecter fare against, say, a 6850 with one power connecter?
The same, or would the 6950 perform slightly better?
Not going to buy the card, but it made me curious.
If the 6950 card has 2 power connectors on the card, and you only insert 1 PCI-E power cable, the card will not work. The system will not complete booting, or even attempt to boot in most cases.
For every card that requires additional power, the power cables must be plugged in to complete boot.
Suppose you have all the cables plugged into the 6950, it would be faster than the 6850. In fact, a stock 6950 is about as fast as the fastest OC of 6870 you can typically get on a water cooling setup (more or less).