The inital DDR5 spec started at DDR5-3200, with a peak bandwidth around 25GiB/s, going up to DDR5-6400 which doubles that to ~50GiB/s.

Now DDR5-8800 has been specced out, at around 70GiB/s.

I see two 'islands' coming; 3x and 4x the original 3200MT, which would be DDR5-9600 and DDR5-12800, the latter hitting a bandwidth of ~100GiB/s.

With latencies not improving, large CPU caches will remain a necessity at the high-end.

https://www.anandtech.com/show/21363/jedec-extends-ddr5-specification-to-8800-mts-adds-anti-rowhammer-features

#JEDEC #DDR5 #Memory #RowHammer #PRAC #PRHT