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[Various] Samsung 8-core 28nm big.LITTLE ARM Processor Set For ISSCC - Page 3

post #21 of 30
Quote:
Originally Posted by SCollins View Post

Has to do with the fact that most phone OS's are utter crap.

As long as their use is just as phones you dont need that fast of CPU. If you want to compute and use it as a PC with a monitor and mouse it would be great. Tablets probably benefit for A7 core more then phones.
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post #22 of 30
It's totally practical for desktop replacement tech like Ubuntu for Andriod.

Using the A15 while docked on a desktop, and A7 untethered.
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post #23 of 30
Quote:
Originally Posted by DuckieHo View Post

Clock gating and power gating can only do so much.
Basically, chips are optimized to operate best within a certain range..... i.e. Sandy Bridge power/performance is best between something like 20-200w. Being the case, the Sandy Bridge architecture and chips do not do as well once you start forcing it under say 5w. This is true all chips.... they optimally performance/watt is something like one magnitude.
The big.LITTLE concept address this issue by simply creating two seperate blocks. i.e. The big cluster might ran using 2-5w while the LITTLE cluster runs at .1-.5w. The difference in overall power consumption due to the varying load is big enough to justify the increased transistor cost.
NVIDIA's Tegra 3 was the first (that I know of) to actually implement this concept. They used 4 big cores and 1 LITTLE core... it's not quite the same but it is the same concept.
The clusters should be gated to save power.... it's probably all big or all LITTLE cores.
I believe the CPU presents the OS with the cores.... regardless if it is 4 big or 4 LITTLE.

I am hardly an kind of EEE guy, but wouldn't having a whole other CPU clocked off still increase idle power consumption pretty significantly? This is hardly a concern for ARM processor because they are so small, but it must dramatically increase the size of the chip also. It seems like the brute force approach to what desktops accomplish with clock speed profiles.
post #24 of 30
Until they actually start offering decent muti-threading in Android then this chip is pointless...

Modern dual cores offer just as good as an experience as quad cores, sometimes better because they generally run at higher clock speeds.
post #25 of 30
Quote:
Originally Posted by mothergoose729 View Post

I am hardly an kind of EEE guy, but wouldn't having a whole other CPU clocked off still increase idle power consumption pretty significantly? This is hardly a concern for ARM processor because they are so small, but it must dramatically increase the size of the chip also. It seems like the brute force approach to what desktops accomplish with clock speed profiles.

No, they can basically cut power to the idle cores completely.

Like I said, clock gating only helps so much.... about 1 magnitude of power consumption. i.e. A Sandy Bridge running at 2w will lose to an ARM dual-core running at 2w. Clock scaling starts to be less efficient after a certain point. It is at these points where core-gating can come into play.
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post #26 of 30
Quote:
Originally Posted by Stalker View Post

Good, now they must patent this just to shaft Apple.

hehehe exactly what i'm thinking biggrin.gif
    
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post #27 of 30
Quote:
Originally Posted by Fantasy View Post

hehehe exactly what i'm thinking biggrin.gif

Apple is a licensee of ARM.... they can implement big.LITTLE.
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post #28 of 30
Quote:
Originally Posted by ZealotKi11er View Post

As long as their use is just as phones you dont need that fast of CPU. If you want to compute and use it as a PC with a monitor and mouse it would be great. Tablets probably benefit for A7 core more then phones.

I have no expectation, nor should anyone else, that a phone would replace a desktop/workstation, and if they do, they should yank their head from their posterior post haste.
post #29 of 30
What the heck am I going to do with an 8 core smartphone?
post #30 of 30
Quote:
Originally Posted by Capt View Post

What the heck am I going to do with an 8 core smartphone?

watch more pron ?
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