Looking at current AMD CPU pricing, around 300 dollar range is already filled with 7600, 7600X, 7700 and 7700X.
I'm afraid that your assumptions are wrong. In CPU/APU market segmentation terms, the $300 range is $300-$349 but even if we go from $275-$325, there is only one Ryzen APU that's actually in that price category, not four like you tried to claim. Also, I said $350, not $300 and you'll see in a minute why debating against the logic of that price is pointless.
The R5-7600 is
$230 - is not in the $300 range
The R5-7600X is
$250 - is not in the $300 range
The R7-7700 is
$325 - is in the $300 range
The R7-7700X is
$350 - is not in the $300 range
Adding 7600X3D would just mean AMD competes against itself. Also V-cache technology, while it works well, might be little complicated to put on low end products. Unless AMD wants to put it on all price categories, AMD must put line somewhere. They obviously decided that line is 8 cores, at least on this time.
That's also false because AMD's X3D pricing follows a set pattern. Check this out:
My idea was for the R5-7600X3D to cost $350:
The R5-7600X3D will cost $350. Guess what else costs $350:
R7-7700X - $350
The R7-7800X3D will cost $450. Guess what else costs $450:
R9-7900X - $450
The R9-7900X3D will cost $600. Guess what else costs $600:
R9-7950X - $600
Do you not see the pattern? My estimation was actually spot-on based on their pricing structure for all of the other X3D models. AMD has decided that an X3D APU is priced to be equal to the X APU that is one tier above it. As for competing against itself, you could say the exact same thing about ALL of the X3D APUs because of this, not just the hypothetical R5-7600X3D.
There are reasons why AM4 got only one V-cache model. In case there is even low possibility about supply issues, AMD wants to avoid putting V-cache on too cheap CPU. Otherwise there Will be supply issues.
That's a possibility but you're still only making assumptions. The reason given for the 3D cache only being put on one CCX is because APUs with two CCX's are productivity APUs and AMD knows very well that the 3D cache is essentially useless for productivity because it restricts the core clocks. They left one free because that CCX will be able to clock up and minimise the detrimental effects to productivity. This is what they said anyway and I haven't heard of any 3D cache shortage.
The thing is, if there really IS a shortage, don't you think that it would be wiser for them to only use it on R5 and R7 APUs where it will have the most effect? I mean, let's face it, a ~9% increase in gaming performance on an APU as powerful as the R9-7950X is essentially a waste. The 3D cache has demonstrated a 15% performance uplift on average over the R7-5800X which is a far bigger impact. My guess is that it would probably deliver an 18-20% average performance boost to a 6-core which is literally
double the performance uplift experienced by the R9-7950X.
A shortage of 3D cache would have me
only using it on R5 and R7 models because I would want it to have the most significant impact possible. As you have probably noticed, reviewers around the web haven't been overly-impressed with its implementation on the R9-7950X3D which makes for bad press. OTOH, the uplift on the R7-5800X3D was considered VERY impressive by reviewers which made for very good press and resulted in stratospheric sales numbers for the R7-5800X3D. <- This is what AMD wants.
AMD wants fastest gaming chip, not just something that matches Intel. For me, that makes perfect sense and I will buy 3D cache model soon.
Right, and from what we've seen, the R7-7800X3D is going to be that processor, being even faster than the R9-7950X3D. I'd buy it too, if I didn't already have an R7-5800X3D.
Again, if there are even small possibility of supply issues (there must be reason why AMD released only one V-cache model for AM4), AMD must price V-cache models high enough to avoid potential supply problems. V-cache is still separate chip and it just don't "automatically" come when making CPU. Ryzens are already pretty complex on package side (IO-chip, chiplet) and V-cache makes it even more complex.
You keep talking about supply issues. Do you have a source for this information? I only ask because I typed "AMD 3D cache shortage" in Google and found nothing.
In other words, if AMD expected they will have endless V-cache supply, they surely wouldn't design Zen4 architecture for high clock speeds. They surely knew V-cache chips would have lower clock speeds and if they planned to put V-Cache on all Zen4 CPUs, then they had no need to sacrifice IPC over clock speed. They did it so Zen4 was supposed to have V-cache models and models without it from beginning.
Again, this sounds like assumption. I don't bother discussing assumptions. If you have evidence of what you're saying then we can talk because unless we actually know for sure, it's a waste of time.
All I see here is AMD making a really stupid decision based on greed, kind of like how Intel has decided that only K-models can overclock.
I would
like to believe that AMD has a good reason for it, but I'm not a fanboy and, based on their recent dishonesty concerning the Ryzen 7000-series GPUs, I won't
assume that they have a good reason until they reveal what their reasoning is. Since they've said nothing, it points to them just being greedy and wanting to force gamers to pay more for the R7 and R9, even if it's a waste of silicon.
