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sglass68
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re: Analysis gives first look inside Apple's A4 processor
sglass68   6/1/2010 10:05:42 AM
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Hi, I think your Dhrystone numbers are out by a factor of 1000. ARM's Cortex-A8 is 2 DMIPS / MHz, not 2000. Regards, Simon

EET Administrator
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re: Analysis gives first look inside Apple's A4 processor
EET Administrator   5/11/2010 11:33:56 PM
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test

luting
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re: Analysis gives first look inside Apple's A4 processor
luting   5/10/2010 3:18:17 PM
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Is this really Apple own design or Samsung chip with Apple logo on it?

rick merritt
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re: Analysis gives first look inside Apple's A4 processor
rick merritt   5/8/2010 4:19:37 PM
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What's I'd love to see is more comparisons between the capabilities of the A4 and other similar generation ARM mobile processors like the Qualcomm Snapdragon, Nvidia Tegra 1/2 and TI OMAP 3/4.

CharlieCL
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re: Analysis gives first look inside Apple's A4 processor
CharlieCL   5/8/2010 12:51:05 PM
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Looks no performance advance in A4. What is the magic of 10 hours running time?

SL325
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re: Analysis gives first look inside Apple's A4 processor
SL325   5/8/2010 5:25:49 AM
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I think they are 3D multi chip modules so that is probably the size of the DRAM integrated into the package

craigth
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re: Analysis gives first look inside Apple's A4 processor
craigth   5/7/2010 10:24:05 PM
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What would really be a great compliment to this analysis articel is to investigate and report what EDA design tools were used to design the chips.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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