If I ignore the limited bandwidth then Navi 23 with 40CU is only 100*1.25*1.1= 138 or 38% faster than 5700XT which is behind the RTX2080Ti which is 50% faster than 5700XT and yet RTX 3070 should be faster. Either It has more CU or you made a mistake in your calculation(prediction).
BTW this Navi 23 can clock up to 2.3Ghz according to you yet only has 150W TBP and 12Gb Vram?
Now If Navi 22 has 60CU with 2.3Ghz It would be 138*1.5 = 207 or 107% faster (with linear scaling only so in reality slower) than 5700XT which should be close to RTX 3080 performance. All that with only 225TBP, which would mean >100% increase in performance/W compared to RX 5700XT.
Navi 21 with 80CU and 2.3Ghz 207*1.33 = 275.21(also linear scaling used) or 175% faster than RX 5700XT. This could be also close to RTX3090 with>100% better performance/W than RX5700XT.
You wrote how people fail to see things, yet in my humble opinion you are the one who ignores some very important things. How can RDNA2 with higher CU count, higher clockspeed and more Vram have so low TBP and be >100% better in performance /W ratio than It's direct predecessor RX 5700XT and on a similar process? AMD said 50% better performance/W ratio yet you are saying It's more than double of that.
Are you really surprised people are so sceptical about your claims? I am not.
P.S. It's not like I wouldn't like such cards especially the mobile versions would be a killer and I would seriously consider buying a new laptop, but It's simply too good to be true in my opinion.
Firstly. Are you SURE you are not overinflating performance of Ampere GPUs in your calculations?
Secondly. Its already a dead horse, and we still are beating on this topic.
52CU GPU with 1.8 GHz(the same as RTX 5700XT supposedly uses anywhere between 130 and 140W of power, even according to MS's own material.
If we take into account the power draw of 256 Bit GDDR6 memory - around 40W's, we get anywhere between 170 and 180W for a GPU, if the physical design is 1:1 the same for dGPUs. And I won't comment whether its the same, or not.
So effectively you get 30% more CUs than RX 5700 XT, with the same core clocks, using 20% less power. So this already is breaking AMD claims of 50% improvement per watt, with new generation, because this doesn't even include IPC uplifts.
Thirdly. I never said that we will actually get 2.3 GHz on Navi 22. I only said that at 2.3 GHz 60 CU GPU draws around 180W, for the GPU portion, only, based on my info. That is all I knew. Whether this was an experiment by AMD, testing, or we REALLY are getting 2.3 GHz on N22? I don't know.
I personally expect that clock speeds will go down with CU counts going up.
Fourth. AMD Physical design team is right now at RTG. And they are responsible for optimi8zing the design. What the teams at AMD are capable of - look no further than to Renoir.
RDNA2 is Nvidia Maxwell-like step in their GPU architectures.
Its hard to believe that AMD achieved so large gains on the same process? Yes it is hard to believe. But also is showing what good engineering can achieve, if the rumors are to be believed.