>>1487157>set A (5900, 5950x, 5900xt) versus set B( 5900x , 5950x, 5900xt)>all seems to be the same between set A and set B>what's under the hood or are they just rebranded engines?I wish you had worded the question as above because I had to re-read several times to "mind read" what you actually meant to ask.
My opinion on the set B difference is that these CPU are the "hand-picked" versions of the CPU which were able to reliably run at a higher base clock. So those were tested and culled out of the pool of CPU in order to be sold at a higher price. So, colloquially speaking regarding your accusation that these are "rebranded CPU", I would say Yes, they are "rebranded" versions. <-- the word "rebrand" is quite incorrectly used, but is used in what I assume to be the best context of your query.
>which one advantage the others?The reason why you'd choose the 5900xt over the 5900 is only because you want predictable performance with LOWER maximum power dissipation. The xt version seems to have its boost ability limited. Boost is what makes the power/heat go way up. So if you have a physically small case and limited amount of air cooling, the XT version probably keeps you from ever triggering thermal throttling as it won't boost as much as the regular 5900.
