Going from fast to fastest, Colerado based Liqid Element (and yes I spelled that right) is offering a PCIe Add-In-Card SSD. Now it is intended for the enterprise market, but the values are so stagger... Liqid Element PCIe SSD Does 7 GB/s and 1.24M IOPS
And here I was excited for 3d Xpoint for the past year.. this is supreme for sure. Amazing performance and more amazing price tag undoubtedly. Still though, for the enterprise this is truly an awesome bit of performance.
Guessing those caps are for powerloss protection...looks like a pro product and will have a price to match...A shame you'll need to RAID0 them to get decent speeds.