Qualcomm SoC & ARMv8 custom core discussions

[Exophase]

... and they've made so many changes since the 810:

http://o.aolcdn.com/hss/storage/midas/de295972c7fd56e21bba3f2754a29306/200011890/snapdragon810.png

I don't know, I think the changes are pretty impressive. The DSP turned into a VPU, the multimedia processing part turned into the DSP, the modem turned into the ISP, and the ISP just became part of "connectivity."

I'm starting to wonder if this die shot is even of a Qualcomm chip in the first place.

 

[Deleted member 13524]

Side-by-side comparison for better laughs:

 

[Exophase]

And now they just released a new 820 diagram of the same old die shot that dramatically repositions the blocks.

http://www.anandtech.com/show/9552/...680-dsp-in-snapdragon-820-accelerated-imaging

Someone in their marketing department has to be laughing right now.

 

[Wishmaster]

https://www.qualcomm.com/news/snapd...o-cpu-heterogeneous-computing-and-role-custom
It looks like the rumored 3Ghz was nothing more than a hoax.
IMO, it's too early for hype creation if the devices are supposed to appear early next year so maybe, after all, they're planning some early devices for 4Q of this year.

 

[Wishmaster]

Shouldn't technically be double post so here it goes - preliminary antutu scores of 820
http://www.techgrapple.com/antutu-score-green-orange-x1-pro-with-snapdragon-820/
Wonder how those scores reflect end results considering how much time they got left till the planned release of devices using 820. They sure take their time to test them thoroughly....

 

[Grall]

Sony Xperia Z5 uses dual heatpipes to control Snapdragon 810 furnace:
http://www.xperiablog.net/2015/09/04/xperia-z5-using-dual-heat-pipes-to-control-thermal-performance/

Interesting, interesting. I've been wondering if Apple would ever do something like that; for example, there's a spot on the side of my iPad which gets quite warm when it's working hard, but so far there doesn't really seem like there's been a need for that. iThings do throttle, but it's nothing really serious, not compared to the 810 anyway, which allegedly makes 4k video recording in the Z4 shut down within minutes due to overheating...

 

[Simon F]

not compared to the 810 anyway, which allegedly makes 4k video recording in the Z4 shut down within minutes due to overheating...

Really? Doesn't it have dedicated video HW?! I don't know the figures for 4k, but standard HD [EDIT]decoding[/EDIT] on IMG hardware uses relatively little power. Even back in 2012 it was only around 12mW.

[re edit: Had forgotten the referenced slides said decoding not encoding!]

 

[Kaarlisk]

Even back in 2012 it was only around 12mW.

That is decode, not encode.

 

[Simon F]

Oops. Failed memory! I do apologise, but it was a few years ago!

Having said that, I don't think the increase in power consumption for HW encode is that large. I'll see if I can find a reference.

 

[Grall]

Maybe it does H.265 encode? I hear that is considerably rougher on computing resources.

 

[wishiknew]

Another week another timbit on 820. Doesn't help all the 810 based stuff out there.

 

[wishiknew]

Liquid cooling for the new Lumias?

 

[NRP]

Is the 808 a furnace like the 810?

 

[Nebuchadnezzar]

Is the 808 a furnace like the 810?

On a per-core basis, not far off.

 

[Nebuchadnezzar]

http://browser.primatelabs.com/geekbench3/compare/3741251

First actual benchmark out. Keep in mind the reported clock is of the slow cluster, no idea of the clock of the fast cluster.

What stands out is very big improvements in memory.

 

[Turbotab]

http://browser.primatelabs.com/geekbench3/compare/3741251

First actual benchmark out. Keep in mind the reported clock is of the slow cluster, no idea of the clock of the fast cluster.

What stands out is very big improvements in memory.

And it's gone......
http://webcache.googleusercontent.c.../geekbench3/3741251+&cd=1&hl=en&ct=clnk&gl=us

Slow cluster?, how many cores does the S820 have?

 

[Nebuchadnezzar]

2+2

 

[Alexko]

Is there a cached comparison to something relevant?

 

[Nebuchadnezzar]

I had a page open against the 7420.

 

[iMacmatician]

Here's a spreadsheet with a comparison to the Apple A9 and the 7420 linked in Nebuchadnezzar's attachment. It's on the sheet named "unknown MSM8996 for arm64."

https://docs.google.com/spreadsheet...fDWXMpn231WXvrlx5zokj8m0Q/edit#gid=1984339382