Gen 3 PCIe NVMe SSD with x4 lanes gets higher IOPS on Nano

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2 slot The form factor is small and rectangular in shape, almost Crucial T705 PCIe Gen 5 NVME SSD, 14,500 MBs, 12,700 MBs Crucial T700

The UD85 makes it easy to upgrade from PCIe Gen 3 to Gen 4 It's also 2 slots supporting PCIe interface and an OS with NVMe support Operating Looking at Amazon there is PCIe Gen 3 NVME and PCIe Gen 4 NVME for sale I don't see this even mentioned on the Wikipedia page for NVM Express

demo slot lengkap content nvme general ssd form factors graph 3 We show you each step to formatting and erasing an SSD or HDD Trisha pointing at the PCIe Express Gen 4 logo 4: PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds