By: Ronald Maas (rmaas.delete@this.wiwo.nl), August 10, 2014 10:56 pm
Room: Moderated Discussions
juanrga (nospam.delete@this.juanrga.com) on August 8, 2014 10:49 am wrote:
> E.g. a x86 decoder is more difficult to implement than an ARM64 decoder, because the former has to match
> instructions of variable length. Also the x86 ISA is full of legacy instructions, which have to be implemented
> in hardware and then verified/tested which increases development costs and time of development.
>
> According to Feldman an entirely custom server chip using the ARM architecture takes about 18 months
> and about $30 million. By contrast, it takes three or four-year time frame and $300--400 million in
> development costs required to build an x86-based server chip based on a new micro-architecture.
>
>
An interesting video confirms what you are saying. Search for: Jim Keller On AMD's Next-Gen High Performance x86 & K12 ARM Cores.
Saw this couple of months, but if my memory serves me correctly, he said that with the same transistor budget he is able to build a faster core with Aarch64 than with x86_64. Time will tell if that is true, but Jim seems to know what he is talking about.
> E.g. a x86 decoder is more difficult to implement than an ARM64 decoder, because the former has to match
> instructions of variable length. Also the x86 ISA is full of legacy instructions, which have to be implemented
> in hardware and then verified/tested which increases development costs and time of development.
>
> According to Feldman an entirely custom server chip using the ARM architecture takes about 18 months
> and about $30 million. By contrast, it takes three or four-year time frame and $300--400 million in
> development costs required to build an x86-based server chip based on a new micro-architecture.
>
>
An interesting video confirms what you are saying. Search for: Jim Keller On AMD's Next-Gen High Performance x86 & K12 ARM Cores.
Saw this couple of months, but if my memory serves me correctly, he said that with the same transistor budget he is able to build a faster core with Aarch64 than with x86_64. Time will tell if that is true, but Jim seems to know what he is talking about.
