The new Samsung 980 Pro is the successor of the 9780 Pro and Samsung&s first SSD with support for PCI-Express (PCIe) 4.0, which enables twice the data transfer rate of the previous version 3.0, which had already reached its limits in fast SSDs. Those who work with large 4K/6K/8K/RAW files could benefit from this high transfer speed in their daily work.
Samsung 980 Pro NVMe SSD
However, the 980 Pro&s speed is so high that the maximum speed of the interface is almost exhausted here: it reaches a read speed of 6,500 MB/s (and still 5,000 MB/s write speed) and is thus just before the practical limit of PCIe 4.0 x4, which is about 7,000 MB/s. But the next versions 
PCIe 5.0 and even PCIe 6.0, each twice as fast, are already being planned...
The influence of the bus speed is nicely shown in the maximum speed of the 980 Pro per PCIe 3.0: there it only reaches a reading speed of 3,500 MB/s and is thus by far not exhausted (although the power consumption is also 3 watts lower). However, only owners of new AMD Ryzen 3000 and Threadripper 3000 systems can enjoy the maximum speed - Intel still does not support PCIe 4.0.
The speed of the Samsung 980 Pro compared to PCIe 4.0 and PCIe 3.0
The Samsung 980 Pro NVMe SSDs come in memory sizes of 250 GB, 500 GB and 1 TB in the M.2-2280 form factor and use 6th generation V-NAND memory devices with 128 layers. A positive aspect of the new energy-saving architecture: Samsung seems to be able to do without extra cooling according to the pictures. They are expected to be launched in the second quarter of 2020.
;)
;)