The new forums will be named Coin Return (based on the most recent vote)! You can check on the status and timeline of the transition to the new forums here.
The Guiding Principles and New Rules document is now in effect.
AFAIK it's only 16x/16x or 8x/8x on the motherboards with SLI chipsets.
Anandtech benchmarked a 650i motherboard (8x/8x) and compared it to a 680i one (16x/16x).
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Anandtech benchmarked a 650i motherboard (8x/8x) and compared it to a 680i one (16x/16x).
Bit-tech has some benchmarks of nforce4 chipsets (the DFI is 8x/8x) if you think it was different with older chipsets or drivers.
For the unofficial modes I would suggest checking the forums at guru3d.
At night, the ice weasels come."