By: Wilco (Wilco.Dijkstra.delete@this.ntlworld.com), February 4, 2015 1:59 pm
Room: Moderated Discussions
David Kanter (dkanter.delete@this.realworldtech.com) on February 4, 2015 10:56 am wrote:
> Wilco (Wilco.Dijkstra.delete@this.ntlworld.com) on February 3, 2015 2:39 pm wrote:
> > Maynard Handley (name99.delete@this.name99.org) on February 3, 2015 12:36 pm wrote:
> > > http://www.businesswire.com/news/home/20150203006487/en/ARM-Sets-Standard-Premium-Mobile-Experience#.VNEfWELSm-U
> > >
> > > Looks like it will be slightly higher than Apple A8 performance (though,
> > > of course, details are vague till we see the tech blog right ups).
> >
> > A ~2.0GHz Exynos 7420 already equals A8 on integer and memory, being only behind on FP.
>
> Yet again, Geekbench is basically useless, please stop citing it :)
Which benchmark is more useful then? Don't mention SPEC as that is worse in many ways.
> > So it's obvious A72 at 2.5GHz will beat A8 by a huge margin. I guess it will match Denver
> > and Apple A9 on single threaded int/fp/mem performance - it's going to be a close race.
>
> 1. I don't think beating a power-constrained 28nm/20nm TSMC
> processor using a 16FF+ processor is at all impressive.
Just beating is not impressive, but beating by a huge factor is. These are far bigger gains than Intel got when moving to their FinFet process.
> 2. I don't think we can infer anything about memory performance, since
> that is a function of the SOC fabric and memory controller.
The improved fabric bandwidth and efficiency should increase memory system performance assuming the same memory. However if one uses all 4 memory channels then you could see far larger gains.
> 3. Do you want to put a quantitative estimate behind "huge margin"?
Like I said, I'd expect A72 to match Denver (both on SPEC and GB), so about 50%.
Wilco
> Wilco (Wilco.Dijkstra.delete@this.ntlworld.com) on February 3, 2015 2:39 pm wrote:
> > Maynard Handley (name99.delete@this.name99.org) on February 3, 2015 12:36 pm wrote:
> > > http://www.businesswire.com/news/home/20150203006487/en/ARM-Sets-Standard-Premium-Mobile-Experience#.VNEfWELSm-U
> > >
> > > Looks like it will be slightly higher than Apple A8 performance (though,
> > > of course, details are vague till we see the tech blog right ups).
> >
> > A ~2.0GHz Exynos 7420 already equals A8 on integer and memory, being only behind on FP.
>
> Yet again, Geekbench is basically useless, please stop citing it :)
Which benchmark is more useful then? Don't mention SPEC as that is worse in many ways.
> > So it's obvious A72 at 2.5GHz will beat A8 by a huge margin. I guess it will match Denver
> > and Apple A9 on single threaded int/fp/mem performance - it's going to be a close race.
>
> 1. I don't think beating a power-constrained 28nm/20nm TSMC
> processor using a 16FF+ processor is at all impressive.
Just beating is not impressive, but beating by a huge factor is. These are far bigger gains than Intel got when moving to their FinFet process.
> 2. I don't think we can infer anything about memory performance, since
> that is a function of the SOC fabric and memory controller.
The improved fabric bandwidth and efficiency should increase memory system performance assuming the same memory. However if one uses all 4 memory channels then you could see far larger gains.
> 3. Do you want to put a quantitative estimate behind "huge margin"?
Like I said, I'd expect A72 to match Denver (both on SPEC and GB), so about 50%.
Wilco
Topic | Posted By | Date |
---|---|---|
ARM announces A72 | Maynard Handley | 2015/02/03 11:36 AM |
ARM announces A72 | anon | 2015/02/03 12:53 PM |
ARM announces A72 | Hugo Décharnes | 2015/02/03 01:20 PM |
ARM announces A72 | juanrga | 2015/02/03 04:15 PM |
ARM announces A72 | Wilco | 2015/02/04 12:58 AM |
ARM announces A72 | Eric Bron | 2015/02/04 01:48 AM |
ARM announces A72 | none | 2015/02/04 02:24 AM |
ARM announces A72 | Eric Bron | 2015/02/04 02:42 AM |
ARM announces A72 | Exophase | 2015/02/04 07:01 AM |
ARM announces A72 | Anon | 2015/02/04 07:35 AM |
ARM announces A72 | Exophase | 2015/02/04 07:58 AM |
ARM announces A72 | Groo | 2015/02/04 09:24 AM |
ARM Marketing, BS up to my ears | David Kanter | 2015/02/04 10:51 AM |
ARM Marketing, BS up to my ears | Maynard Handley | 2015/02/04 01:59 PM |
ARM Marketing, BS up to my ears | David Kanter | 2015/02/04 02:21 PM |
ARM Marketing, BS up to my ears | Groo | 2015/02/04 02:30 PM |
ARM announces A72 | juanrga | 2015/02/04 04:23 AM |
ARM announces A72 | Wilco | 2015/02/04 03:01 PM |
ARM announces A72 | juanrga | 2015/02/04 04:06 PM |
ARM announces A72 | Anon | 2015/02/04 01:28 AM |
ARM announces A72 | juanrga | 2015/02/04 04:31 AM |
ARM announces A72 | Aaron Spink | 2015/02/04 06:49 AM |
ARM announces A72 | Ronald Maas | 2015/02/03 07:23 PM |
ARM announces A72 | Seni | 2015/02/04 12:19 AM |
ARM announces A72 | Maynard Handley | 2015/02/04 10:42 AM |
ARM announces A72 | Seni | 2015/02/04 12:33 PM |
ARM announces A72 | dmcq | 2015/02/04 12:57 PM |
ARM announces A72 | Ronald Maas | 2015/02/04 06:42 PM |
ARM announces A72 | anon | 2015/02/04 05:19 AM |
ARM announces A72 | Exophase | 2015/02/04 07:31 AM |
ARM announces A72 | David Kanter | 2015/02/04 10:25 AM |
ARM announces A72 | Exophase | 2015/02/04 01:33 PM |
ARM announces A72 | anon | 2015/02/04 10:27 PM |
ARM announces A72 (fixed format) | anon | 2015/02/04 10:29 PM |
ARM announces A72 | Exophase | 2015/02/04 11:11 PM |
ARM announces A72 | anon | 2015/02/05 12:02 AM |
ARM announces A72 | anon | 2015/02/04 05:57 PM |
ARM announces A72 | Wilco | 2015/02/03 01:39 PM |
ARM announces A72 | Maynard Handley | 2015/02/03 02:13 PM |
ARM announces A72 | anon | 2015/02/03 02:29 PM |
ARM announces A72 | Wilco | 2015/02/03 02:44 PM |
ARM announces A72 | David Kanter | 2015/02/04 09:56 AM |
ARM announces A72 | Peter Greenhalgh | 2015/02/04 10:56 AM |
ARM announces A72 | Aaron Spink | 2015/02/04 11:59 AM |
ARM announces A72 | Alberto | 2015/02/07 10:22 AM |
ARM announces A72 | Exophase | 2015/02/07 10:47 AM |
ARM announces A72 | Alberto | 2015/02/07 12:44 PM |
ARM announces A72 | Exophase | 2015/02/07 02:35 PM |
ARM announces A72 | Alberto | 2015/02/08 01:09 AM |
ARM announces A72 | Exophase | 2015/02/08 11:05 AM |
ARM announces A72 | David Kanter | 2015/02/08 12:39 AM |
ARM announces A72 | dmcq | 2015/02/08 04:14 AM |
ARM announces A72 | Michael S | 2015/02/08 04:38 AM |
ARM announces A72 | Gabriele Svelto | 2015/02/10 05:11 AM |
ARM announces A72 | Jouni Osmala | 2015/02/10 11:24 AM |
slit vs unified | Michael S | 2015/02/10 01:57 PM |
slit vs unified | dmcq | 2015/02/11 05:44 AM |
ARM announces A72 | Doug S | 2015/02/08 09:00 AM |
ARM announces A72 | Exophase | 2015/02/08 10:57 AM |
ARM announces A72 | dmcq | 2015/02/04 01:10 PM |
ARM announces A72 | David Kanter | 2015/02/04 02:28 PM |
ARM announces A72 | Wilco | 2015/02/04 01:59 PM |
ARM announces A72 | Aaron Spink | 2015/02/04 09:31 PM |
Intel 32nm vs 14 nm | Michael S | 2015/02/05 01:03 AM |
Intel 32nm vs 14 nm | Wilco | 2015/02/05 02:27 AM |
Intel 32nm vs 14 nm | David Kanter | 2015/02/05 09:05 AM |
Intel 32nm vs 14 nm | carop | 2015/02/05 11:12 AM |
Normalize to drawn or effective width? | David Kanter | 2015/02/05 11:45 AM |
Normalize to drawn or effective width? | carop | 2015/02/05 02:40 PM |
Normalize to drawn or effective width? | David Kanter | 2015/02/06 12:44 PM |