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Cores aren't the real picture here. AMD's high-end cores have a quarter-gig of cache. That uses a lot of power no matter how you slice it. AMD's Infinity Fabri
by hajile 5y ago
Cores aren't the real picture here.
AMD's high-end cores have a quarter-gig of cache. That uses a lot of power no matter how you slice it. AMD's Infinity Fabric interconnect uses 30-50% of total chip power. Apple will have similar communications overhead too.
Adding more memory lanes increases power consumption as does adding more PCIe lanes and other IO.
It definitely remains to be seen if their chips are significantly faster when scaled up. In any case, they wouldn't have to beat AMD or Intel to count it as a success. Simply not being terrible would be enough.
- cma 5y ago> AMD's Infinity Fabric interconnect uses 30-50% of total chip power. It would use less if it was on the same process node as the rest of stuff though. They were fulfilling some obligation to Global Foundries by having them separately manufacture it.