maemo.org - Talk - Gemini PDA (the return of the Psion Series 5MX)

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- - Gemini PDA (the return of the Psion Series 5MX) (https://talk.maemo.org/showthread.php?t=99022)

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by kinggo (Post 1524351)

I don't see the point in a device like that.

Don't buy it then. Simples.

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by Marshall Banana (Post 1524355)

Can somebody enlighten me what's the point of this design?
One low power co-proccessor for standby-stuff i could understand, but what's this good for:
2x Cortex A72 @2.5GHz
4x Cortex A53 @2.0GHz
4x Cortex A53 @1.55GHz

If i run a webserver on my pocket-computer or do heterogenous supercomputing?

Or is it for power management?

To quote Anand:

http://www.anandtech.com/show/9227/mediatek-helio-x20

"I like to see MediaTek's tri-cluster approach as an extension to the existing dual A53 cluster designs - where the added A72 cluster is truly optimized for only the highest frequencies. Indeed, we are told that the A72 cluster can reach up to 2.5GHz on a TSMC 20nm process. ARM aims similar clocks for the A72 but at only 14/16nm FinFET processes, so to see MediaTek go this high on 20nm is impressive, even if it's only a two-core cluster. It will be interesting to see how MediaTek chooses the lower frequency limits on each cluster, especially the A72 CPUs, or how these options will be presented to OEMs.

The end-result is a promised 30% improvement in power consumption over a similar 2-cluster approach. This happens thanks to the finer granularity in the performance/power curve and an increase in available performance-power points for the scheduler to place a thread on. Having a process that is heavy enough that it is not capable of residing on the smallest cluster due to performance constraints, but not demanding enough to require the big cluster's full performance, can now reside on this medium cluster at much greater efficiency than had it been running on the big cluster at reduced clocks. MediaTek uses CorePilot as a custom developed scheduler implementation that is both power aware and very advanced (based on our internal testing of other MediaTek SoCs). My experience and research with it on existing devices was fairly positive, so I'm sure the X20's new v3.0 implementation of CorePilot will be able to take good advantage of the tri-cluster design.

The biggest question and need of clarification is in the area of what the MCSI (the interconnect) is capable of. ARM had announced its CCI-500 interconnect back in February, which incidentally also promised the capability of up to 4 CPU clusters. MediaTek hinted that this may be a design based on ARM's CCI - but we're still not sure if this means a loosely based design or a direct improvement of ARM's IP."

But I broadly agree, it seems a little OTT.

In the X20's favour:
A72 high perofmance cores.
Relatively modern 20nm fab process.
Vulkan capable graphics engine.

In the X20's deficit column:
It's Mtek, so traditionally poor linux driver support.

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by pichlo (Post 1524364)

Don't buy it then. Simples.

there's nothing to buy anyway. You know how it usually ends up with those moneyasking projects.

Anyway, a slider like graalphone but without the stupid phone would interest me more. That GPD thingy also looks more interesting than this.

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

The Psion returns! Meet Gemini, the 21st century pocket computer
Psion, was a lion, in iron (Reg readers called it)
27 Feb 2017 at 13:49, Andrew Orlowski
...
Martin Riddiford, the designer of the Psion Series 3 and Series 5 keyboards, and co-founder of Therefore, has come up with an entirely new design for the 21st Century.
...

So one of the Psion Series 3/5 designers is involved in this Gemini project.

This project seems to be the answer to Reg poll 1st place :
Bring it BACK... with MODs! Psion 5 storms great tech revival poll
The AA-powered, pocket-sized touch daddy
24 Feb 2017 at 13:06, Gavin Clarke

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by aegis (Post 1524357)

Quote:

Originally Posted by juiceme (Post 1524353)

Well, how do people use phones?
With BT headset of course. (at least here we do :cool:)

Only if you're a self-facilitating media node.

I think you mean helpdesk worker? Nope, I'm a biker :D

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by Jedibeeftrix (Post 1524341)

android [and] linux.

according a comment on the indiegogo page, they are at MWC and will go and talk to the Jolla peeps.

More details :

Quote:

pakman - 1 day ago
Linux + Android suggests that it might be possible to port SailfishOS to it? Is that a reasonable thought, or am I dreaming?

Davide Guidi - Campaigner - 1 day ago
Thanks for the comment, very interesting! We are at 4YFN, stand P4, at Mobile World Congress and we will go and visit the Jolla stand tomorrow. We have not considered it so far, but you never kno

Wow, imagine a Gemini PDA/Smartphone with Sailfish ?

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by juiceme (Post 1524415)

I think you mean helpdesk worker? Nope, I'm a biker :D

Nope. I definitely meant self-facilitating media node.

Though of course you'd be using a Wasp T12 Speechtool, not a Gemini PDA, if you wanted to be totally Mexico.

Re: Gemini PDA (the return of the Psion Series 5MX)

I love it...

Just like i love my P11Z:
http://www.notebookcheck.net/Review-...k.16038.0.html

Are they coming back? :)

Re: Gemini PDA (the return of the Psion Series 5MX)

Quote:

Originally Posted by xes (Post 1524436)

I love it...

Just like i love my P11Z:
http://www.notebookcheck.net/Review-...k.16038.0.html

Are they coming back? :)

Take a look at GPD Pocket https://www.indiegogo.com/projects/g...2/x/16082729#/