Re:Apple M1 foreshadows Rise of RISC-V
by imtringued on Monday December 21, 2020 @02:37AM
(#25492883)
>This extra heat limits thermal throttling and thus sustained clock speed unless you have really good cooling, which is why the super high performance X86 chips need beefy heatsinks or water cooling.
The 16 core Ryzen has the same TDP as the 8 core Ryzen. Increasing the clock
speed for slightly more single core performance is an intentional design decision, not an engineering flaw. Clock up those Apple chips and they are going to guzzle more power than AMD's chips. https://images.anandtech.com/doci/14892/a12-fvcurve_575px.pn...
Apple's preference for manufacturing processes that optimize for mobile low ower consumption below the 4Ghz range mean scaling up is harder than just slapping a higher TDP on the chips. Remember the TDP of the whole package already exceeds the TDP of the most power hungry Ryzen core running at 4.8Ghz. Apple has enough headroom to boost to the same frequencies but they don't, because of the manufacturing process they have chosen which loses all of its efficiency beyond 4Ghz.
The 16 core Ryzen has the same TDP as the 8 core Ryzen. Increasing the clock speed for slightly more single core performance is an intentional design decision, not an engineering flaw. Clock up those Apple chips and they are going to guzzle more power than AMD's chips. https://images.anandtech.com/doci/14892/a12-fvcurve_575px.pn...
Apple's preference for manufacturing processes that optimize for mobile low ower consumption below the 4Ghz range mean scaling up is harder than just slapping a higher TDP on the chips. Remember the TDP of the whole package already exceeds the TDP of the most power hungry Ryzen core running at 4.8Ghz. Apple has enough headroom to boost to the same frequencies but they don't, because of the manufacturing process they have chosen which loses all of its efficiency beyond 4Ghz.