Nforce4 Ultra and SLI

[Sernascoh]

Is it essentially the same chipset with SLI simply disabled on the Ultra?

I notice that many MB makers use the same BIOS for Ultra and SLI boards....

Abit Fatal1ty boards (AN8) both use the same version 17 bios.

Is this right?

Thanks

[apocalypse]

Not necessarily. The Asus A8N-SLI Deluxe and Asus A8N-SLI Premium have different hardware when it comes to the SLI configuration. The BIOSes are different and cannot be used on one another.

[Crashman]

All nForce4 chipsets up until a couple days ago were the same, with features disabled by nVidia through the removal of resistors to complete the pathways. You can find a reference to which resistors do what in SysOpt's EVGA motherboard review.