TechRadar - SSD manufacturers have rapidly run into a tricky problem - namely the SATA 6Gbps interface. The rapid advances in NAND and controller tech must have surprised the most optimistic of SSD designers, and while old Lucifer himself will be limbering up for the final reckoning before the performance of spinning disks threaten the 6Gbps interface, some mainstream SSDs are close to flooding the interface right now.