|06 Dec 2010||#3|
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Well, I did not know either what it is for. But here someone posted the answer:
Ok, having looked at the manual, I can see what its for.
The "Switch card" is a slot terminator.
You put it in the 2nd PCI-e 16x slot to disable it and make the 1st slot use all 16 lanes.
Two PCI-Express2.0 x16@8 lane graphic slot offer 4Gbyte/sec data transfer rate at each relative direction and up to 8Gbyte/sec concurrent bandwidth at full speed.
Looks to me like the default set up is to have the 2 PCI-e slots in a split 2 x 8 lane configuration, ie Crossfire mode.
If youre only using 1 card, put in the Switch and youll get all 16 lanes for your 1 card.
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