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The Real Reason Behind AMD's Downfall




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teh_boxzor wrote :

is AMD still gunning for the tri-core? i really don't see a market for that. maybe OEM and thats about it.



this could result in some interesting ads.

good point in the original post.


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Yeah, I think that AMD is renaming it the Tri-2-Stay-Alive-Core! :)

Hey dude, your name is makin me hungry! Got any Parmesan?

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Amiga500 wrote :


Intel's MCM approach does work very well (scaling from 2 to 3/4 threads is adequate) and yields are strong. But Intel now has to overcome the problems AMD had with K10 when it designs Nehalem.



I dont know that I would come to the same conclusion.
-First, Intel is using high K, not SOI. SOI played a big role in AMDs inability to raise 65nm clockspeeds to 90nm levels, and has no doubt played no small role in the K10s instability/inconsistancy at higher clockspeeds.
-Second, like Intels quads, AMDs quads are producing twice as much waste heat as their duals cores, yet using the same surface area heat speader as the duals to channel that heat to the HSF...meaning more energy has to be dissapated or 'pumped' though the same 'diameter pipe'. This results in greater heat saturation of the die. This is not good whether MCM or native, however, since SOI appears to be more sensitive to higher energy states than high K, the negative impact of more cores will be greater for SOI dies than Kigh K dies.
-Third, Intel is going native at 45nm, meaning for a given wafer, they can experiance a higher waste rate while still producing the same number of fucntional dies per wafer as 65 nm....meaning they can affords to waste more dies(lower yield) per wafer yet maintain the same margins per wafer.
-Fourth, because Intel is going native at 45nm, it means leass waste heat per die, which is a preemptive solution to potential heat related problems in and of itself.

None of this is to say Intel will not experiance problems with native quad, just that they are not likely to be the same as AMDs because of the different node, manufacturing process and Uarch.


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I always assumed it was ManBearPig.

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