By: juanrga (nospam.delete@this.juanrga.com), August 11, 2014 7:28 pm
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on August 10, 2014 6:01 am wrote:
> juanrga (nospam.delete@this.juanrga.com) on August 10, 2014 5:34 am wrote:
> > Evidently the x86 tax is more noticeable on small phone-like cores but the tax doesn't magically
> > vanish for big cores (only reduces the amount by a factor of about 2x or 3x). This is the reason
> > why a 90W ARM SoC is able to offer 80--90% of the performance of a Haswell 140W Xeon.
>
> How it could be true when there exists neither 90W ARM SoC nor 140W Haswell Xeon?
> http://ark.intel.com/products/codename/42174/Haswell#@Server
>
90W ARM SoCs were presented recently and there are several E5 Haswell Xeons rated at 140W.
There are also several 135W and 145W Haswell Xeons.
> juanrga (nospam.delete@this.juanrga.com) on August 10, 2014 5:34 am wrote:
> > Evidently the x86 tax is more noticeable on small phone-like cores but the tax doesn't magically
> > vanish for big cores (only reduces the amount by a factor of about 2x or 3x). This is the reason
> > why a 90W ARM SoC is able to offer 80--90% of the performance of a Haswell 140W Xeon.
>
> How it could be true when there exists neither 90W ARM SoC nor 140W Haswell Xeon?
> http://ark.intel.com/products/codename/42174/Haswell#@Server
>
90W ARM SoCs were presented recently and there are several E5 Haswell Xeons rated at 140W.
There are also several 135W and 145W Haswell Xeons.
