You will still need powered x1 to x16 risers. I am building a unit with the same motherboad. It should be here tuesday. I plan on running 2 powered x1 to x16 risers and 2 x16 to x16 unpowered.
I think..and to be honest I am not positive..but when using the regular PCIe x16 slots from the motherboard you dont really need powered risers. Some boards without that extra 12v molex connection to the PCIe lanes I would consider using powered x16 cables. But on this ASRock unit I am going to try running as mentioned above.
YMMV
zif
i see. then i gonna go this https://bitcointalksearch.org/topic/guide-how-to-make-your-own-pcie-extender-with-molex-76121 to x1 -> x16 risers I think..and to be honest I am not positive..but when using the regular PCIe x16 slots from the motherboard you dont really need powered risers. Some boards without that extra 12v molex connection to the PCIe lanes I would consider using powered x16 cables. But on this ASRock unit I am going to try running as mentioned above.
YMMV
zif
