bonkers!, I spent 3k on parts, and got my trusty local computer guy friend to build it in my own lounge for £40 inc a 4090, that was a squeeky bum moment getting the huge 4090 into my old case, let me tell you!
the white strix 670e-A f is only pcie4.0, maybe they thought, why isn't he getting the black 670e-A which is pcie5.0 for this kind of money, then backed that wise choice up with a black 4090 to match it, idk, maybe there is a 5.0 pcie m.2 in there as well!?
or maybe you ordered some things that were wrong, thinking you were ordering something else, did you order a white case, for example, or accidentally put a black one down, and they did the best they could with what you had ordered, then swapped in a black gpu to keep a decent colour scheme going..
i'm curious to know which 4090 they sent out to you too, and which one you ordered, was the given 4090 better than the one you chose too?
you have /had 2 weeks LDSR right to get your money back, has that expired?
sorry you are unsatisfied