I really want a RAID controller but I can't find the right one. I need a RAID controller with 8 SATA (or SAS) ports with a PCIe 2.0 x4 (or any other PCIe configuration with a 2GB/s bandwidth). But all I can find is an 8 SATA RAID controller with a PCIe 2.0 x2 which is not enough bandwidth for RAID0-ing 8 drives each running on ~190MB/s. And a 4 SATA RAID controller with a PCIe 2.0 x4 but I don't have enough extension slots to install 2 RAID cards. So, how and where can I find an 8 port SATA RAID controller with PCIe 2.0 x4 (or PCIe 3.0 x2)?