The end user doesn’t care what it’s manufactured on
It matters when that is where the performance is coming from. AMD doesn't make chips, they are fab-less. They design them, and point to TSMC to make them. On top of that, TSMC can up-sell technologies that they have developed to it's clients. AMD is a client. AMD's 3D Cache (the X3D chips) is one of those. It uses TSMC's stacking technology, which they have a patent for.
That is not the only thing that AMD is using given that since the Zen Architecture started, they have been using the foundry (along with GlobalFoundries until Zen3). They are far from the only ones doing that.
Like or not, this is the game being played and it is a game that Intel has been losing for while because they didn't think that they had to play it. Pat Gelsinger thinks that they do and so far, he has been right. That said, this redirection do not come without sacrifice, not at the pace they are doing it at, because the previous management locked in it's choices that kept it from competing. (Like updating a single node for nine years and calling that "leading", the 10nm fiasco, etc.)
To put this into context, consider this... with the way that AMD does designs, needing chiplets (Intel call theirs Tiles) to hold the main logic and IO dies with a high-performance "fabric" interconnect connecting them for the CPUs. It is very possible to cut out TSMC if you can provide something similar. Pat would welcome AMD's business to it's foundry, if AMD wanted too.... but why would they want to leave the leading foundry, where they get the node and performance gains from?
It's not just about "bigger number, better" and that has caught out Intel for just as long.... because again, the game has changed and, for a while, Intel didn't notice. If Intel want's to be the leader again, they have to beat TSMC not AMD and they aren't, for now.
You’re trying to draw comparison that does not work, nor does it even matter because I never even mentioned that.
It matters alot, because Intel lost the engineering advantage it had years ago. They have been playing catch up since.
Pat wants it back and first step to doing that is knowing what they are up against.... which mean that they have to accept that they don't lead the market and they haven't in years. TSMC does and
they define it with the bouns of very few foundries (namely Samsung) having kept up. They also need to know whom the oppoent is, which again...
Isn't AMD. How can they be if you want AMD's business? When AMD's advantage is mostly due to it's contract with TSMC?
The comparison you are making doesn't really work when AMD isn't the target, it's made irrelivant by that fact. The reality is AMD isn't the business Intel is compeating against,
TSMC is and Pat has made that abundantly clear.
I get that gamers just want "better" but that has several metics to it which isn't about just Speed and Power. IPC matters alot, efficiency matters alot, and the relationship between these and other variables matter a ton. Guess whom can (and has been) deliver that.... in any chip that they can make.... for any ISA they can build for....