> while leaving the spec open to further expansions with faster memory as technology progressed They only set the current standard, but allowed to, if technolo

> while leaving the spec open to further expansions with faster memory as technology progressed They only set the current standard, but allowed to, if technology progresses, that other speeds/timings would also be jedec compatible, rather than being some kind of XMP. Motherboard manufacturers do not need to upgrade their previous models if the hardware doesn't meet the required SN ratios, or whatever. But they _could_ if they believe they had the hardware to support it.