Worth upgrading from RX 6800 XT to RX 6950 XT as last supported card before it disappears?

I just found a pretty good deal on a new RX 6950 XT (562 EUR), reference model.

At the moment I have a Gigabyte RX 6800 XT Gaming OC, which I could sell used for about 300 EUR, so the effective price would be about 250 EUR.

I have size (small case) and PSU (only 2x8 Pin available) constraints, so any other variant besides the reference card are out of the question.

I was wondering, since the 6950 XT is the last card that will probably be ever supported officially in MacOS, would it make sense to upgrade this from the 6800 XT? I'm just looking for some performance increase for Windows gaming (I have a dual boot), but I've seen pretty much everywhere that the increase would be marginal (5-15%).

Of course, anyone without an hackintosh would consider this a stupid upgrade and go for the 7000 series cards instead, but I'm looking for advice specifically because I want to keep the dual boot with my MacOS disk working.