Silicon Power PCIe Gen 4x4 UD90 solid state drive is fast, but the SSD is also kind of slow
Are all PCIe 4.0 solid state drives fast? Absolutely. However, they aren't all the same speed. For instance, the Mushkin SSD we covered here can achieve read speeds up to 7,415MB/s -- that is really fast. A new SSD called "UD90" from Silicon Power, however, can only do up to 4,800MB/s.
Yes, folks, we have two M.2 drives, both with the same PCIe Gen 4x4 interface, but one is significantly faster than the other. In other words, the UD90 is rather slow as a PCIe Gen 4.0 drive... comparatively. And yet, compared to SATA-based solid state drives, the UD90 is actually incredibly fast.
