With Intel and AMD desktop platforms supporting PCIe 5.0 one after another, SSDs have ushered in a new era. However, as you may have noticed, while the various enterprise PCIe 5.0 SSDs announced previously have generally achieved nominal performance of 14GB/s and 10GB/s read/write speeds, the desktop products that have emerged one after another recently are not as fast, with reads basically at 10GB/s.
Although consumer-grade products can’t compete with enterprise-grade products, it is important to know that PCIe 5.0 x4 can provide 16GB/s theoretical bandwidth and 15.75GB/s actual effective bandwidth.
At the same time, Qunar PS5026-E26 main control supports eight channels of 2400MT/s NAND flash memory, and the nominal read/write speed can reach 13GB/s and 12GB/s.
When the first PCIe 4.0 SSDs came up, they were able to run at around 7GB/s, which is not far from the theoretical bandwidth of PCIe 4.0 x4 8GB/s.
It turns out that the problem lies in the NAND flash memory, the existing 176-layer stacked flash memory, the interface speed stays at 1600MT/s, completely unable to feed the bandwidth of PCIe 5.0 x4, 10GB/s is already their limit speed.
Of course, some manufacturers have previewed upgraded versions but still can only run up to 12GB / s.
The good news is that Micron has announced 232 layers of flash memory, SK Hynix has achieved 238 layers, and China’s Changjiang Storage is also expected to rush to 232 layers, plus 2400MT/s interface speed, they are all perfect partners for PCIe 5.0, but will not start mass production until the end of this year one after another.
Therefore, if you are a high-performance enthusiast and want to experience the extreme speed of PCIe 5.0 SSDs, it is better to wait for a while, and it is estimated that around the middle of next year is the time to get on board.
