| Intrinsic said: While this is a great step in the right direction (mind boggling the PS4 didn't launch with a 3.0 sata interface to begin with!!!) I would have been more excited about M.2 support with 2000MB/s+ speeds; ah well.... baby steps I guess. |
Just a minor correction to your comment here. M.2 does not give you 2K+ MB/s speed by default. M.2 is just a small form factor connection for SSD's that was orignally designed to be used for ultra compact laptops and tablets. Even today most M.2 capable PC's still run use the SATA 3.0 bus for data transfers.
A PC needs to have the NVMe protocol and needs to have the SSD run along the PCIe 3.0 bus at at least 4X speeds to be able to acheive the the 2K+ MB/s speeds. There are 3 different conneciton types that can handle teh 4X PCIe speeds. This includes direct PCIe drives, Drives using the M.2 conneciton, Drives using the SATA Express conneciton, and finally the SFF-8639 (now named U.2). In fact teh SFF-8639 (U.2) can actually exceed the max speed of both M.2 and SATA Express.
But in the end the key factor for speeds above 550MB/s is a combination of NVMe and using the PCIe 4X bus.
*Edit: There are also M.2 SSD's that don't support the NVMe protocol and thus cannot run over the PCIe bus and are limited to SATA 3.0's max bandwitth of around 550MB/s
