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Re: Broadcom BCM2709, ARMv8, and missing CPU features

crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

On Sat, Aug 6, 2016 at 2:57 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:

> Note also that you will sometimes *lose* performance by going to 64bit
> because the pointers use up twice as much space, so if your program
> needs to store&manipulate many pointers, it will use up more cache space
> and memory bandwidth, which will tend to slow it down.

 did i hear right that there's also a core design difference between
the A7 and the A53 which results in a performance/watt loss of around
15%?  so you're actually *worse off* going to 64-bit at the moment, if
power (battery life) really matters.  i think it was on anandtech or


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