PCIe 4.0 is fully developed, there are long-lasting models such as the Crucial E100 and fast ones such as the Corsair MP600 Mini R2 or the Teamgroup G70 Pro Aluminium. These are perfectly adequate for everyday tasks, and even faster SSDs do not offer any advantage in games consoles...

The Western Digital WD_BLACK SN850X (WDS200T2X0E) is an M.2 SSD with 2TB of storage space for the PCI Express 4 interface. It impressed with its very good read and write performance when tested. Samsung delivers this model without a proper heat sink. The long-term load capacity of 1,200 TBW is fine...

The Samsung 990 Pro is fast, but had to settle for second place in testing. With the WD_Black SN850X, rival Western Digital currently has an SSD in its range that is even faster - it is particularly superior when it comes to accelerating operating systems and programs. On top of that, the WD SN850X is 100 euros more expensive than somewhat slower PCI Express 4.0 SSDs, but still significantly cheaper...