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post #7 of (permalink) Old 05-06-2015, 07:49 AM
Bite my shiny metal GPU!
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Originally Posted by maarten12100 View Post

It's funny AMD hasn't actually increased core count (or IPC) ever since interlagos. Intel on the other hand features 18 cores in their chips with much greater IPC due to superior design and manufacturing...

Fixed that for you.

The main difference between Intel's addition of cores to their server chips and what AMD did is that Intel's core count wasn't designed to paper over a design that was massively inferior for almost all work loads in terms of performance and performance/watt. Instead, it was a natural outgrowth of their leadership in node size.

Also, how could AMD have increased the core count given that they sold their fabs to GloFo (who has yet to mass-produce anything smaller than 28nm, and even that node is wholly unsuitable for "construction core" chips). You'd pretty much have to encapsulate an entire 32nm wafer to get a 18-core die on AMD's platform, and then make a MCM module twice as large to hold two of them like the current G34 server chips do...

On top of that, AMD's x86 server market share is less than 5%, which means that there's absolutely no demand (and subsequent profits) to justify the R&D costs involved with new CPU designs in that sector. And as we all have seen over the last several years, without new server chips for AMD there can be no new designs trickling down to the AM3+ platform.

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