Nvidia goes for Nforce 4: PCI Express, all K8 support and Sound Storm 2
 

NFORCE 4 will be the name of the project that will finally bring PCI Express to the Athlon K8 market. This chipset will be socket 754/939 ready and 940 compatible and all CPUs Athlon 64s, FX, Sempr0ns and Opterons will work on it.
The platform will have one to two PCI express 16 slots making this Geforce 6800 SLI mode possible for not quite as much crazy money as you'll have to invest in Tumwater and Xeon CPU.

The good news for Sound Storm lovers is that this chipset finally features these nice audio capabilities. It's now called Sound Storm 2 - no surprise there - but we don’t know anything about its features as yet.

Nvidia PCI Express stuff was scheduled for Q4 and it hasn't changed from that so far. We wrote Nvidias C8K-04 captured in living hues and now we know that this is the Nforce 4 project. µ

Last time we asked Nvidia's Drew Henry director of this chipset business about Nforce 5 for Intel CPU's he said laughing where is Nforce 4. This is your answer Drew. µ

http://www.theinquirer.net/?article=16874

Interesting...

Might be the chipset which is gonna make me switch onto the 64bit platform :)

same here probably