JEMC said:
HappySqurriel said:
ethomaz said:
drkohler said:
ethomaz said:
ghost_of_fazz said:
And the RV770 (on 55nm) consumed between 110w and 190w of power, but that was determined only by the core speed (525 Mhz being the lowest and 850 Mhz the highest), being unrelated to the number of available shader processors.
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The power is not a problem because that new GPU will be make in 32nm...
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How do you know? Do you know how many 32nm fabs are actually operating (you qould be surprised) for mass manufacturing? If they really had a 32nm line, wouldn't they shrink the CPU first?
Let's not forget the 4890 is an RV790 chip, not an RV770 chip. Even at 45nm, we are looking at TDPs of >100Watts, and adding the rumour of a superfast CPU with a TDP over 125-150Watts, that would make a hell of a lot of heat to dissipate for such a small WiiU box as shown in pix (I love the picture where a Ninty guy places the WiiU into an almost completely enclosed TV stand.. that unit would melt within minutes..)
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There are no 45nm for GPU... if Nintendo not used 32nm it will be 40nm for sure (all Radeon HD 6xxx GPU uses 40nm).
And 2012 is ready for 32nm... the AMD Fusion (GPU+CPU) is 32nm and most Intel CPU is 32nm too (Intel will show 22nm in 2012).
So I can't see Nintendo using the dated 55nm... at least 40nm.
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I think the point was that today Nintendo (probably) could not have their CPU and GPU manufactured using a 32nm process to have the systems on display represent actual hardware ...
While the Wii U's GPU will be based on the R770 GPU, will be heavily modified, and will be manufactured (probably) using a 32nm process it is highly plausable that the GPU in the systems on the show floor were a stock R770 GPU that was manufactured using a 55nm process and underclocked to fit into the tiny case that was on display.
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While using a 32nm process would be ideal, you must remember that it's Nintendo. They always play safe with their hardware so will probably use the tested and now reliable 40nm process.
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The Wii's CPU and GPU used the same 90nm process as the PS3 and XBox 360, which was fairly cutting edge at the time; and the Gamecube used a 180nm process which was cutting edge when it was released.
Being that a smaller manufacturing process (typically) helps to keep production costs down, and also helps to make smaller and more energy efficient systems, it is completely within Nintendo's usual strategy to use the most current mass market manufacturing process available; and for the Wii U that will (probably) be a 32nm or smaller process.
