Well I bet you could reverse it too (x4->x8 for expander & x8 for the radi card, which is probably better since you'd want the PCIe bandwidth for the raid card not the expander.
Since I had no desire to deal with that, I bought a P6T7 so everything is a physical x16 slot It may seem dumb but a few of those converters covers the price differential between that an a lower-end X58 board.
Since I had no desire to deal with that, I bought a P6T7 so everything is a physical x16 slot It may seem dumb but a few of those converters covers the price differential between that an a lower-end X58 board.