What is the difference?

[MBrown]

What is the difference between these two chipsets?

 

[Geomagick]

This page should help you.

 

[MBrown]

Whats the point in having three PCI express slots? Are physics cards going to be using these?

Edit: Oops. I thought I had posted this in the Motherboard section. My bad.

 

[Yellowbeard]

Most likely the difference is the same as how Intel bins chipsets. They are the same chipsets but, the 650 is the lower bin chipsets. I certainly don't suspect that Nvidia has 2 different fabs for them.