Pci Express M.2 Specification Revision 5.0 Version 1.0 Pdf -

: It continues using the highly efficient 128b/130b encoding scheme , keeping protocol overhead at a minimal 1.5%. 3. Key Mechanical and Dimension Updates

The physical "gold fingers" on an M.2 SSD have changed subtly. Rev 5.0 v1.0 revises the to reduce stub resonance. It also redefines the reference impedance from 85-ohm nominal to a tighter 85-ohm +/- 5% tolerance across the entire mating cycle. pci express m.2 specification revision 5.0 version 1.0 pdf

The jump from PCIe 4.0 to 5.0 doubles theoretical bandwidth. For an M.2 SSD using four lanes (x4), this means: : It continues using the highly efficient 128b/130b