PowerEdge R730xd installing PCI SSDs

Hello everybody

We have a PowerEdge R730xd Server and we want to install two PCI SSDs.

We have the following 4 Slots:

Riser1: Slot2_G3_X8(CPU2)

Riser1: Slot3_G3_X8(CPU2)

Riser2: Slot4_G3_X16(CPU2)

Riser2: Slot5_G3_X8(CPU1)

Does it matter in which Slots we install the SSDs?? (performance issues...) We want to set up RAID 1.

Thank you!