There is a different type of B-die out there and I'm not sure it could be confused with the "good" B-Die.
https://www.overclockers.com/adata-xpg-spectrix-d40-ddr4-3000-review/
Yeah, I saw that earlier. I don't think mine is remotely the same. That's a really different creature. I think what we're seeing now is yes, the actual DRAM chips on the sticks are legit b-die, but the controllers vary quite a lot in quality.
The way I see it, there seems to be a small range of controllers from tighter to more relaxed, but within this set, all will do 3200 CL14. I see it best represented at 3600 in the CL15, CL16, and CL17 sets. All b-die with similar controllers that will actually run a lot of the same profiles, though subtimings get looser as you go. They all give the performance associated with b-die. Mine will still do the fabled 3200 CL14 easily. Works great at ~1.35v and under 1v SoC. But it likes slightly more relaxed timings to do higher speeds, even though it will still do them. Even among classic b-die there is a fair bit of variance. Not all b-die is necessarily good for overclocking, but these are the ones people are always talking about.
And then there are a few out there that use completely different controllers. It almost doesn't seem right to call them b-die. But maybe that's where we all have steered each other wrong. We missed an important distinction. It's like... ...you can buy a car with a nice engine but if the transmission sucks then... ...just because car A has the same engine as car B doesn't make it able to put the same power down. And similarly, just because you buy a pair of sticks known to be b-die doesn't magically make them all-around HQ RAM. It just means they have high quality DRAM chips tacked on the PCB. Maybe there was more of it floating around than we've been lead to believe. Or maybe manufacturers, realizing that people were seeking out b-die and actually checking, started tacking on inferior controllers and charging the same price to cash in on the obsession, just based on availability.
And then there are the crazy high speed ones that actually have pretty crummy IC's tacked on... dunno if I'd put those in the same class, either.
I'm pretty sure with the calc, the V1 and V2 profiles are for the 2 originally most common controllers. Could be wrong. Just makes sense to me. Too bad it's not that simple anymore. Maybe it never was.
Sometimes I wonder how much of a role my mobo plays in my case. I don't have some important settings. And something just messing around tells me I'm missing something with this board. It's just not a great memory OCer. Probably a little bit of both for me. Oh well. At least I got 3200 CL14 going.
Shame, really. I still feel like it shouldn't take all of this just to find RAM that works how you want it to. It's not silicon lottery. It's more like a silicon easter egg hunt. Obnoxious to know that what you want is out there, but you just can't find it. Nerve wracking to pull the trigger on expensive RAM only to find it's not what you hoped it was.