If they know anything about gpu's ...
are they just posting random pictures and hoping someone will bite??
It's entirely possible that OP doesn't know anything about graphics cards and still has one to sell. Their ignorance on a particular issue regarding the product isn't necessarily a red-flag, but when you tie it into the whole picture it definitely shouldn't sit right with anyone. Brand new account, selling something they don't know very much about with pictures that have nothing identifying them as their own.
Hopefully they post a timestamp with username to quiet (most of) the suspicion.
You guys raise some valid points, though arguably exaggerated. But you also seem to be going out of your way to ignore information provided in the original post. That post provides a tracking number for an app where a photo originating from a mobile phone is provided and a blockchain generated timestamp for the logged photo is provided (ie more assuring than a user set timestamp). It also references escrow. While I haven't thought through the details of escrow for this venue, my initial thinking is agreeing on a moderator from the Open Bazaar Verified Moderators. In any case, blindly ignoring a reference to escrow raises as many questions about you as your assertions about me.