Re:Mobile CPUs and the Performance Inequality Gap
by altmind on Monday March 30, 2020 @02:38AM
(#22725751)
specint2006 shows that A13 outperforms desktop ryzen 3900x. 5W vs 105W. 6 cores vs 12 cores. something is wrong with numbers here.
Re:Mobile CPUs and the Performance Inequality Gap
by fulafel on Sunday March 29, 2020 @08:11AM
(#22718321)
Where can I see these SPEC results for Apple CPUs?
Re:Mobile CPUs and the Performance Inequality Gap
by opencl on Sunday March 29, 2020 @08:40AM
(#22718501)
Anandtech frequently includes SPEC results in their reviews.
https://www.anandtech.com/show/14892/the-apple-iphone-11-pro...
Re:Mobile CPUs and the Performance Inequality Gap
by fulafel on Sunday March 29, 2020 @09:18AM
(#22718743)
Thanks! These are SPEC2006 which is already retired, but those numbers for the A13 do indeed come in the same ballpark as the last official SPEC2006 results that were published for Xeons in 2017 before retirement.
And Apple also benefits from being able to set their own page size and probably from getting to have caches that are virtually indexed and physically tagged rather then physically indexed and physically tagged. Doing address translation in parallel with way lookup is a nice little performance boost. There are rumors of other cleverness in the cache heirarchy from control of the OS but I don't know the details.