Newer PCB revision, but I'm guessing is cost optimized. There are a handful of OCV1's of different models (and even a OCV2). Cheaper heatsink, cheaper power delivery, more or less the same GTX 1650. It helps increase profits during droughts of purchases from consumers. To be fair, I couldn't tell the difference between an RX 580 4GB ARMOR OC and RX 580 4GB ARMOR OCV1, though various components could have been sourced from a different supplier at a lower price.

This mini me card is good for a mini me case.it was better if they build it for single slot. https://media.tenor.com/images/b688a84ec33909d9b2a9cbeb1a964568/tenor.gif

for euro zone it seem that the official version is the D6 version (mean in DDR6)