According to Corsair’s official blog post, its DDR5 memory modules were tested while running at considerably higher frequencies of 6400MHz. In addition to the higher speeds, its module also had a maximum bandwidth output of 51GB/s. For comparison’s sake, that’s nearly double the bandwidth output of your average DDR4 memory module, running at 3200MHz.
In addition to achieving nearly double the bandwidth, Corsair says that its DDR5 can achieve that while consuming less power at 1.1V. Further, and unlike DDR4, it is possible for the future memory standard to ship out with as much as 128GB in a single stick, versus 32GB for DDR4.