Generally the software will bottleneck before the drive. Its pretty hard to get rated performance out of an SSD. You need to keep the queue at pretty much full

Generally the software will bottleneck before the drive. Its pretty hard to get rated performance out of an SSD. You need to keep the queue at pretty much full depth, which means aio or (much harder) threading. Most real world software at present gets nothing like SSD potential performance in real world situations, as it is mostly build for HDD where none of this stuff mattered.