Selling based on JEDEC ratings only would be unhelpful. Not sure about ddr5, but ddr4 JEDEC ratings only go to 3200; there's good reasons to want to run Ryzen chips at 3600 or higher. I'd rather buy something where the packaging tells me it should work at the speed I want to run it, than have to figure out which skus people say tends to work, when all the boxes just say 3200.
Yeah, if you start getting higher speeds, it becomes more a question of if the memory controller on the cpu, the wiring on the motherboard, and the ram itself will work together at that speed, which you can't guess from just the number on the ram packaging.
It would be nice if JEDEC offered more ratings, but given that they don't, I'll take the XMP numbers.
Give us both the rated JEDEC clocks and timings and the manufacturer overclock clocks and timings.
To use the DDR4-3200 example, it is far more difficult than it should be to figure out whether that's JEDEC 3200MHz or actually JEDEC 2166MHz with 3200MHz XMP overclocking.
Yeah, if you start getting higher speeds, it becomes more a question of if the memory controller on the cpu, the wiring on the motherboard, and the ram itself will work together at that speed, which you can't guess from just the number on the ram packaging.
It would be nice if JEDEC offered more ratings, but given that they don't, I'll take the XMP numbers.