Samsung 990 Evo PCIe 4.0 x4 and 5.0 x2 SSD Power

The very first a combination PCIe 4.0 x4 and 5.0 x2 SSD throughout worldwide production is the Samsung 990 Evo

The previously 990 Evo is distinct, nonetheless, as a result of its arrangement of two PCIe 5.0 lanes and four PCIe 4.0 lanes

Their isn’t much advantages for the 990 Evo to support PCIe 5.0, particularly since PCIe 4.0 SSDs perform properly in PCIe 5.0 slots and aren’t really causing any bottlenecks

In contrast, since it can operate those two lanes at PCIe 5.0 speeds, the 990 Evo would be able to maintain its regular bandwidth

No other brand has supported two separate PCIe versions in the same way as Samsung, so it’s unclear why the company didn’t just utilize four PCIe 5.0 lanes

This was likely caused in part by the 970 Evo Plus pushing the PCIe 3.0 interface to its maximum and being a rather fast SSD for its time