these are interesing as they are a single width gpu and low profile bracket is included and they are about 10$ more than i paid for my rx 570 that i used to own when it was new. Yes i understand it's pcie4 not pcie3 but even so given the shortages that are still ongoing and that an i7 7700 g3 sff from hp is 200$ (what i paid for mine on ebay) and i have just a smidge enough room to put in this rdna 2 card, i find it a compelling option. it vastly outperforms the rx 550 and is about 10% slower in some things compared to a rx 570 i used to own (though that came with two free games - never played those games much btw). The rx 570 took up two slots though.
One card claims to use 4 pcie lanes while the other are 16 lanes? can that be right?
Regarding the PCIe lines I think all have just 4 lines; the 16x claim is probably for the size of the slot. (I think this because 6500 version had it in such a way)
That makes sense.
I wonder how well this will perform on pcie 3 mb. I know it's meant for pcie 4 mb. I'll need to scour the web a bit more i think unless anyone has personal experience.