MSI joins in the limited amount of s939 motherboards based on an nVIDIA chipset, with the K8N Diamond Plus.  AnanadTech has the full rievew of this feature rich board, that includes 2 PCI Express slots capable of running SLI.

You can also see Jon Hung's review of the EPoX EP-9U1697 GLI, which is capable of running 'unofficial SLI'.  Keep an eye on the article for updates on nVIDIA's response to this feature.

"Our initial impression of the MSI K8N Diamond Plus upon opening the box is that it has an

extensive feature list, cluttered yet clean layout, heat-pipe cooling system, and that the overall

quality of components utilized by MSI is very good. The board retails in the US $190 range and

arrives with an extensive accessory and documentation package. Besides the Asus A8N32-SLI and Abit

AN8-32X, this is the only other AMD Socket 939 board to feature the NVIDIA nForce4 SLI X16 chipset

configuration.

During our testing and general usage of the MSI K8N Diamond Plus we found the board's stability to

be superb and it delivered class leading results in most of our synthetic and game benchmarks.

Unfortunately, although the latest 3.0a BIOS release has generally improved the board's stability,

overclocking options, and performance, we still incurred issues trying to get our particular

sample to overclock in a similar fashion to our nForce4, ULi M1697, or ATI RD580/480 boards."

Here are some more Motherboard articles from around the web:

  
Motherboards

• MSI K8N Diamond Plus @ [H]ard|OCP
• Abit A8N 32X @ HotHardware.Com
• ABIT back in the game,

  AN8-32X scrutinised @ TweakTown