Samsung has announced that its much faster DDR5 system memory will go into mass production in 2021, but as for when you can realistically upgrade your PC to the new type of RAM, well, that might be a way out past the the next year. Samsung's revelation came as the company announced that one million modules of its initial EUV-based DDR4 RAM, called D1x, had already shipped; DDR5 is also expected to benefit from the company's advances in advanced manufacturing. EUV. EUV stands for "extreme ultraviolet" and allows for a simpler and faster production process with better yields. It has many advantages over traditional chip production, and as Samsung says, "EUV technology reduces repetitive steps in multi-modeling and improves model accuracy, enabling improved performance and better yields, as well as shorter development time." The problems lie in perfecting the EUV technology to make it workable and viable for volume production, a delicate challenge and an effort that has been in the works for a long time (by Samsung and others). But that's exactly what Samsung has achieved with the millions of milestones achieved with D1x. If you're wondering about the performance of DDR5, that's quite a boost, resulting in a doubling of memory bandwidth. With DDR5 RAM hitting production volume next year, it may be a little while before you see the memory in more smartphones (it's already in some, like Samsung's Galaxy S20), as well as servers and, of course, indeed, on high-end PCs, though exactly when DDR5 will actually be available for PC is disputed.