it looks like most of the boards support 4x4x4x4x bifurication if iam reading asus documentation right. they seem to call it PCIE RAID mode in bios but in the documentation it says 4 m.2 is possible in slot1 on both x670 and B650. also asrock bios manual states 4x4x4x4x on slot 1!
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Yes, Asus has finally updated their bifurcation page. Good news.
You may want to carefully study which slots are physically connected to the chipset vs. directly to CPU.
Yes, it is known to support these from day one.
Just open the bios file they provide and search for strings.
oh yea? never picked up on that where did you read about it before?
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