You still don't get it?
If your calculations are correct, 40 CU RDNA2 GPU having 87% of performance of RTX 3070 will lose IPC compared to RX 6800XT and 6900XT.
And that is flawed logic, mainly because in your calculations you do not take into account for scaling.
40 CU GPU Clocked at 2.2 GHz will not be 50% of performance of 80 CU 2.2 GHz RDNA2 GPU.
Why? Two things. Scaling. 80 CU die may have 90% of CU scaling, compared to 40 CU die, so it alone effectively pushed performance target higher. Secondly, we don't know how 192 bit bus affects performance.
Using basic, armchair logic, for 40 CU die to be exactly 50% of 80 CU die, it would have to have 128 bit bus. But it doesn't. It has 192 bit bus.
So no. Just taking into accounts, those two factors, 40 CU GPU, clocked at 2.5 GHz(which it won't ) will not be "only" 87% of RTX 3070.
Even RedGamingTech info says that it will be about the same as RTX 3070 in performance.
So I would trust a guys who leaked Infinity Cache name, its size, etc way before everyone thought it is real .
I'm not getting it? Child you don't even seem to know basic maths, you claim 2.5GHz 40CU navi22 with +20% IPC vs RDNA1 to be 15% faster than 2080Ti and then you accuse me about RDNA2 IPC loss?
Regarding scaling and memory everything is accounted in my prediction I guess you just assume that I calculated with the notion that 6800XT = 3080 in 4K in a Intel testbed, you didn't asked me (I could have calculated with the notion that 6800XT = -0.5% or -5% or whatever, you didn't ask before start discrediting my calculations?)
Regarding scaling although a reality if you see just the fps results, GPUs are near perfect scalers (99%) , the reason that a design is not scaling 100% can be perfectly explained if you analyze each individual GPU design aspect (or in high-end designs there is the factor of being system limited etc so no GPU related, or it could be the game engine etc) people claiming general rules like 90% scaling etc when a design cannot seem to scale perfectly is because they don't have the knowledge and tools to analyze which aspect of the fundamental GPU components influence and at what degree the results, and trying to rationalize the results they oversimplify and generarilize something that is in contrast with the basic nature of rasterization. (I'm expecting comments like "tell that to 3090" lol)
You said that you trust RedGamingTech which is fine, I have my own predictions/calculations, remember I didn't engaged in a post you made, you replied to a post I made, which is fine of course, except is strange that you seem hell bend on trying to discredit my calculations, I guess trying to maintain a 6700XT is close to 3070 rhetoric is very important to you, I don't care...
Why does it matter if 6700XT is 2.6GHz or something above 2.5GHz , I just made my calculations based on the 2.5GHz rumor, if AMD can hit higher clocks you adjust accordingly the results.
And about the +2.5GHz frequency using the 😉 emoji like you know something more than the rest of us, lol, child are you the only one in the world that saw the +30% clock in AMD's presentation?
You don't even seem to realize that my 6700XT prediction (87% of 3070 in 4K) is potentially very close to 3070, add SAM, add Rage and you get different results, lol if you calculate with a 2.58GHz frequency and let's say SAM is 5% and Rage is 2% you can potentially achieve 96.5% of 3070...
Although I really don't know how you can save from failing your 32CU prediction (performance between 2080 and 2070S) to hit 2080 the clocks have to be above 2.5GHz and you have to add SAM & rage, my calculation is based on the 2.3GHz rumor like I said in my original post. I wonder what difference a cut down Navi22 is going to have with your 2080 prediction... (I expect a response like 2080Ti -> 2080 difference 😉, lol)
Anyway seeing your activity in the forum, certainly You seem invested in the AT community, my intension is not to discredit anything you write, so I wish you the best regarding your predictions even if this means that mine will fail, because to me maintaining a certain status in AT forum is meaningless, I have other things to worry, I haven't even posted in AT since 2010, I really don't care that much, I prefer sitting back and enjoy the show!