iFixit’s teardown of the Surface Studio with Intel Core i5 reveals a SATA 3.0 SSD.
That said, someone is claiming that his Surface Studio with Intel Core i7 has a PCIe 3.0 x4 NVMe SSD.
Specifically: 128GB Toshiba XG3 THNSN5128GPU7 M.2 2280 PCIe 3.0 x4 NVMe SSD
The Rapid Hybrid Drive is using Intel Smart Response Technology (SRT)
Is anyone able to verify this?