piedralibre wrote:
Two questions now:
1 - Are there meaningful differences between SATA SSD (loaded into a Wavlink Toaster connecting to MacBook by USB-C) vs. an external SSD connected directly to MacBook with USB-C?
2 - Are there meaningful performance differences between the different sizes of SSD? The 1TB X9 Pro vs the 4TB X9 Pro for example.
A SATA SSD has a theoretical througput of 6Gbp/s (the speed of the SATA bus) so if loaded into a Wavlink Toaster you would be limited by the 5Gbps throughput of the Wavlink Toaster.
You must check the technical specs of the external SSD you are considering. Many are actually a SATA SSD inside a USB enclosure ... if the enclosure supports 10Gbp/s or 20Gbp/s USB but internally it has a SATA SSD you would be limited to the 6Gbps speed of the internal SATA bus.
Note that the Crucial X9 is spec'd at 1050MB/s, which is 8.2Gbp/s ... but its USB interface is USB 3.2 Gen 2 (10 Gb/s) so even it is limited by the internal speed of the SSD itself. (Don't get me wrong, 8.2 Gb/s is still faster than 6 or 5 Gb/s, I'm just illustrating the need to understand the actual specs.)
There are differences that can be measured in the performance of different size SSDs - but you would be very hard pressed to notice it in real life.