Specifically it’s unusual in that it’s a single-slot design. Barring a rare version of the 1650 that you’re not gonna find for sale anywhere it’s the most powerful single slot GPU you can get that’s powered solely off the PCIE slot.
It’s a good card if you’re doing a compact/low-power build or want to upgrade a prebuilt system that has one of those weird proprietary power supplies.
I paid $150 for this back before Covid hit, and now these are trading for a whopping $250+ on eBay. I could make a hefty profit but for a fellow Oppo I’d happily just break even.