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Re:AMD Ryzen 3rd Gen 'Matisse' Coming Mid 2019: Eight Core Z... by hajile on Wednesday January 09, 2019 @04:49PM (#18869292)
EDIT: I got some stuff mixed up. This post is all wrong.

It's supposedly one IO fits all. It has to interconnect up to 8 CPU chips and 4-8 memory channels (and allegedly some L4 cache). It has to support 128 PCIe lanes (maybe more for the upcoming generation) too. Then also, it's 14nm, so things aren't as small.

I imagine that they laser out most of the die to save power on consumer chips.

Re:AMD Ryzen 3rd Gen 'Matisse' Coming Mid 2019: Eight Core Z... by wmf on Wednesday January 09, 2019 @05:42PM (#18869759)
No, the Rome Epyc IO die (435 mm2) is not the same as the Matisse Ryzen IO die (122 mm2).