Design rules are supposedly quite painful to work with on Intel's 10 nm process due to significant self-aligned multipatterning. This is one of the things they've specifically highlighted as being a benefit from moving to EUV in their Intel 4 papers.
Sapphire Rapids is almost definitely using EMIB to connect the CPU chiplets. (These are small pieces of silicon with high density interconnects placed underneath the edges of the top die.) This inherently requires the top die to be relatively close to each other in order to avoid having this...
That is a typo. If you look around on Twitter, you can see that people asked this in person at the presentation and they said there was no change from client Icelake.
Integer/FP registers is 280/224 respectively for Sunny Cove (and presumably Willow Cove, since AFAICT, the only difference is in the cache hierarchy, not the main core structures). You can find this information in the HotChips ICL-SP presentation...
The y-axis units are very obviously GHz. You can go look up the range of clockspeeds available on Sunny Cove in publicly available Icelake processors to verify that if you're concerned by the lack of an explicit label. The only plausible argument here is that Intel is simply making stuff up or...
(The left-right arrow in that graph has nothing to do with comparing frequency at same voltage, that was in the original slide.) I don't really understand why this is so implausible. 20% drive current improvements have been seen before. If we assume that the 10 nm yield problems are...
It's more like 2.5 GHz on SNC requires the same voltage as ~3.3-3.4 GHz on Willow Cove.
Slide 63 in this deck is pretty close to hard numbers. (https://newsroom.intel.com/wp-content/uploads/sites/11/2020/08/Intel-Architecture-Day-2020-Presentation-Slides.pdf)
I'm not sure if the "reported" N6 order is meaningful with regards to outsourcing of processors. Intel has historically made plenty of products at TSMC (e.g., Ethernet controllers). And they've also bought plenty of companies that make their chips at TSMC (e.g., Mobileye, Altera, Habana...
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