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Qualcomm describes Snapdragon S4

10/8/2011 00:14 AM EDT
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Luis Sanchez
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re: Qualcomm describes Snapdragon S4
Luis Sanchez   12/12/2011 8:58:32 PM
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Really heavy chip! It would be good to have a comparison chart with the Snapdragon, OMAP and ARM. This mentions it has a lot of radios… does this mean it includes all the radios or it supports the interfacing and control of these? I wonder which mobile phones use Snapdragon chip already. And it does mention having a strong graphics processor but it doesn’t mention having a display driver.

t.alex
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re: Qualcomm describes Snapdragon S4
t.alex   10/16/2011 10:13:15 AM
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Very high chance for the sake of good power management.

Kinnar
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re: Qualcomm describes Snapdragon S4
Kinnar   10/13/2011 5:42:26 AM
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I am hearing for the first time that the different cores on a single die runs at different voltage and clock, this will really improve the performance of the power saving in light and heavy load condition.

mandard
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re: Qualcomm describes Snapdragon S4
mandard   10/10/2011 10:42:23 PM
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That is correct

selinz
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re: Qualcomm describes Snapdragon S4
selinz   10/10/2011 6:56:22 PM
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I'd heard at a conference that one of Qualcomm devices had over 100 separately controlled power supplies on a single chip. Discuss. :-)

TingLu
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re: Qualcomm describes Snapdragon S4
TingLu   10/10/2011 5:50:00 PM
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I tend to believe that Qualcom needs to Over Drive CPU voltage to achieve higher frequency it needs. So it separates CPU to different power island to avoid high leakage outside CPU doesn't require high frequency. So it is more work around, not a feature Per se.

chanj0
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re: Qualcomm describes Snapdragon S4
chanj0   10/10/2011 5:18:05 PM
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"The cores and their L2 caches can run at separate voltages and clock rates, a feature which can help lower power 25 to 40 percent, Qualcomm claims." I wonder how it is done. What's the power consumption of the chip and the chip set? One of the highest demand features of mobile device is long lasting with 1 charge. I still miss the phone that I can use for 1+ weeks with 1 charge.

Les_Slater
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re: Qualcomm describes Snapdragon S4
Les_Slater   10/10/2011 12:11:59 PM
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Those involved in the Arm ecosystem need to start providing hardware that will support more robust implementations of OS's. An MMU and other hardware needs to be available to support a uKernal that facilitates separation of critical processes.

arvin.zuo
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re: Qualcomm describes Snapdragon S4
arvin.zuo   10/10/2011 10:31:32 AM
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28nm? unbelievable! what does operating frequency work at?

Ahussai
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re: Qualcomm describes Snapdragon S4
Ahussai   10/10/2011 2:31:11 AM
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The power-saving of 25-40% number seems pretty high. Wonder if they are talking about fast parts power savings or typical/WC parts?

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