gets a slight nod.
Go to tomshardware and read the articles where they test all of the various mobos and chipsets. I believe that there is even some with a SIS chpset now.
Sometimes other features on a given mobo will make one take the slightly lesser chipset.
Is there any good alternatives to nForce boards for Athlon S939?

Chowhound
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GameSpot
Giant Bomb
TechRepublic