Intrinsic said:
you really don't know how these things work. Yes all rumors and pics are fake. Not talking about that. Waste their precious capacities? what the hell are you talking about? And how many times will I have to say this to you, one of the benefits of disabling GPU cores (the amount of shader cores that are made are so much that this is where defects are most likely to pop up.) is that you do not have to wait until Feb processes becomes more mature before you adopt the new fan tech. You just keep ignoring that and I keep saying it over and over again. Actually here.... tired of repeating myself. and a small quote from the above link. "The move from one production node to another historically takes much longer on console, as existing production technologies become more reliable (meaning a higher chip yield per wafer). However, it's clear AMD has incorporated measures into both Xbox One and PS4 processors to make the transition onto small fabrication technologies faster this time around. On the silicon itself, the graphics portion of the processor features a full 14 compute units on Xbox One and 20 on PlayStation 4. In both cases, two compute units are disabled on the final retail units in order to increase production yield. The 28nm production process was very mature by the time the new wave of consoles went into production, meaning there was probably little need to disable any part of the chip on either console. Indeed, in our Xbox One architects interview, the team discussed with us how they could enable the full 14 compute unit graphics hardware on development systems for testing purposes. However, deactivating those parts of the chip means the technology should be able to transition across to 20nm more quickly - the production yield per wafer increases as the chips don't need to be absolutely perfect. In short, both the Xbox One and PS4 processors were designed to be cheap to produce on current 28nm production technology, but flexible enough to move across to more advanced fabrication nodes more quickly than their predecessors." |
No you dont understand my point. The whole segment of High performance chips (any chip with a significantly higher then 10 watt TDP aka no tablet and no phone chip) on 20nm doesnt exist yet at all. And once this high performance segment of 20nm chips exists produced by GF and TSMC there will only be enough production capacities to cater to the high demand for 20nm GPUs (PC GPUs or Industrial GPUs like the Tesla series from Nvidia for Supercomptuer and professional uses). Because they wont be able to produce as much as its needed. So they have contracts in place and Nvidia and AMD wont get infinite chips from them once they are ready.
So they WOULD have to produce less of their 20nm GPUs (which will be sold out for months once they reach the markets) to manufacture the PS4 APU (well AMD would have to do it) with a lower profit margin. Why in gods name would AMD do that, thats practically destroying Billions of Dollar of revenue.
Yes the freaking Compute Units are deactivated on the 28nm process to get higher yields. So ? What is your point there ? NO chips with high TDP no matter how small and how few Compute Units can be produced at the moment at all. Because TSMC only caters to Apple and other mobile manufacturers which need totally different and tiny chips and dont have the same requirements as the high TDP Processors. Seriously. I think you are the one who has no clue because I need to explain everything to you.
Its just not logical that AMD would let TSMC/GF produce PS4 APUs unless Sony pays extra for it to make up the losses AMD would generate by not being able to produce their own GPUs. Because they fill their allocated Chips with PS4 APUs !
There wont be enough capacities for 20nm in the beginning, its that simple. Making it more expenisive because: The demand dictates the price. There is not even one fab right now that can do it period.
Again TSMC wont be able to produce as much chips as needed in the beginning for 20nm. Yields and total capacities wont be good enough for something low priority like Console APUs to be financially viable....
