If you buy a new computer today, it may well be using DDR5 memory. As the name suggests, this represents the fifth generation of the DDR (double data-rate) RAM standard, originally laid down in the year 2000. Of course, if you want to delve into the history of memory you can go much further back than that – the Joint Electron Device Engineering Council (JEDEC) has been developing standards for electronic storage since 1944.
For now, though, let’s focus on how DDR5 builds on its predecessor. DDR4 is a versatile standard that officially comes in seven flavours, dubbed DDR4-1600, 1866, 2133, 2400, 2666, 2933 and 3200. You might assume that the numbers indicate the speed at which the different variants run, and that’s basically right, although since DDR transfers data…