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Author Topic: Sumsung to not use Snapdragon in next gen phone  (Read 1286 times)
W8JX
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« on: January 22, 2015, 07:29:04 AM »

It seems that Samsung is breaking ranks with Qualcomm and not using latest 64bit Snapdragon 810 CPU. The CPU apparently overheated during qualification tests.  The 810 is first 800 series 64 bit chip and that is cause of problem. With previous versions Qualcomm used its custom Krait core and use off the shelf Cortex A57 and A53 ARM cores. QUalcomm previously used these is lower clock speed designs) Without doubt Qualcomm will fix this but not in time for next gen phone from Samsung so they are switch to their own Exynos CPU's that have been used in some Samsung models in past in other countries. The Exynos supports 64bit. For what its worth..... 
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KD0REQ
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« Reply #1 on: January 22, 2015, 10:20:18 AM »

Samsung operates some of the top semiconductor fabs in the world, and has lots of reasons to use their own chips to cut build costs.  Apple bought a ARM design outfit for that reason a few years ago.  ARM licenses are inexpensive.  the problem now is that the 10-12-14 micron fabs are booked solid making graphics and processor chips, so there is a top limit from capacity on how many phone makers get the fastest, least battery-hog processors.  that limit is mostly Apple, which overbuys to lock down price and block others, and Samsung, which could schedule maintenance around their needs if they wanted.
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W8JX
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« Reply #2 on: January 22, 2015, 12:03:10 PM »

The problem is not fab, it is core logic with Cortex A57 and power usage at high clock rates. Qualcom perfected the Krait core over years for speed and efficiency and the A57 has no such refinement but supports 64 bit. Given time Qualcom will design and perfect a 64bit ARM style CPU with lower power consumption but for now the 810 is a quick solution that has baggage. 
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WA2ISE
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« Reply #3 on: January 22, 2015, 01:50:52 PM »

The CPU apparently overheated during qualification tests. 

That's not good for battery life.  Something you'd care about in a portable device.
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W8JX
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« Reply #4 on: January 22, 2015, 04:15:20 PM »

The CPU apparently overheated during qualification tests. 

That's not good for battery life.  Something you'd care about in a portable device.

True but when it overheats it throttles way back and performance suffers big time. They are more concerned about that than battery life on this issue,
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KE7TMA
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« Reply #5 on: January 22, 2015, 05:30:25 PM »

Given time Qualcom will design and perfect a 64bit ARM style CPU

You say this as if it's a law of nature.  Projects fail in the real world, and there's no guarantee that the newer iteration will be better or "better enough."

Then again, it doesn't really matter that much because Samsung's bread and butter is low cost phones that are "free" with a contract.  The kinds of buyers who are using them, by and large, don't really care about quality.
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W8JX
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« Reply #6 on: January 22, 2015, 06:10:06 PM »

Given time Qualcom will design and perfect a 64bit ARM style CPU

You say this as if it's a law of nature.  Projects fail in the real world, and there's no guarantee that the newer iteration will be better or "better enough."

Then again, it doesn't really matter that much because Samsung's bread and butter is low cost phones that are "free" with a contract.  The kinds of buyers who are using them, by and large, don't really care about quality.

Its not a quality issue, its a speed/performance issue. The Oxynos they plan to use is a octa core CPU.
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KE7TMA
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« Reply #7 on: January 25, 2015, 10:01:50 PM »

Given time Qualcom will design and perfect a 64bit ARM style CPU

You say this as if it's a law of nature.  Projects fail in the real world, and there's no guarantee that the newer iteration will be better or "better enough."

Then again, it doesn't really matter that much because Samsung's bread and butter is low cost phones that are "free" with a contract.  The kinds of buyers who are using them, by and large, don't really care about quality.

Its not a quality issue, its a speed/performance issue. The Oxynos they plan to use is a octa core CPU.

Nah, it's a quality issue.
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W8JX
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« Reply #8 on: January 26, 2015, 12:43:39 PM »

Nah, it's a quality issue.

Not in slightest. Its all about overall performance.
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W9FIB
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« Reply #9 on: January 26, 2015, 04:24:13 PM »

Reminds me of the old Miller Lite commercials... "Less filling. Tastes great." In the end, who cares. You either like it or you don't.
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N3QE
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« Reply #10 on: January 27, 2015, 06:43:07 AM »

It seems that Samsung is breaking ranks with Qualcomm and not using latest 64bit Snapdragon 810 CPU. The CPU apparently overheated during qualification tests.

First of all, I'm glad that the 810 tube is being made again, and even better it was considered for the final in a new mobile unit. But isn't it supposed to be (ref. RCA TT-4 manualhttp://www.tubebooks.org/tubedata/tt4.pdf page 127) able to run with the plate cherry-red at 175 watt dissipation? If not, boy I hope someone at Qualcomm got fired for THAT blunder.

Tim.
« Last Edit: January 27, 2015, 07:09:43 AM by N3QE » Logged
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