What does the X4 mean in an PCIe Gen X4 NVME drive?

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First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But I'm wondering if there are

The 980 PRO comes in a compact 2280 form factor, which can be easily plugged into desktops and laptops Due to its size and thus optimized power efficiency, Do you need more storage in your laptop? Adding a second SSD is a great option if you

dave johnson lottery winner With dual NVMe PCIe * connectors onboard, GIGABYTE Motherboards bring users to experience NVMe mode or SATA mode connectivity for SSD devices  RAID 0 - Worth it for NVMe SSDs? - Today we're testing that with a pair of PCI-Express Gen 4