monstercameron
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- Feb 12, 2013
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Isn't the Nexus 10 an 8w TDP device?
Its 4w but under heavy like load it will eat 8w before being throttled
Isn't the Nexus 10 an 8w TDP device?
Isn't the Nexus 10 an 8w TDP device?
The SoC is allowed to reach 8W, making that its max TDP by conventional definitions, but seems to strive for around 4W as its typical power under load.
Almost certainly not! That's one of the easiest misconceptions to make. TDP != max possible power usage. In layman's terms it's average power usage over time. Considering that Nexus 10 throttles until it reaches ~4W (which it does pretty soon) the actual TDP is probably closer to 4W.
Edit:
Ok it seems Anand thinks differently:
http://www.anandtech.com/show/6536/arm-vs-x86-the-real-showdown/13
It tends to go against what I've heard before, but Anand has a degree in Electrical Engineering and I don't, so he's probably right. Idontcare care to specify ?
Regardless TDP tells you very little about real-life workload power usage of the processor let alone the entire device. According to notebookcheck:
Nexus 10 has a 22.75 Wh battery and a peak power usage of 9.4 watts on max brightness
Z-60 has a 36 Wh battery and a peak power draw of 18.7 watts on max brightness
While their battery runtimes were:
Z-60
Idle: 13h 33min
Web: 4h 48min
Load: 2h 48min
Nexus 10
Idle: 17h 10min
Web: 10h 53min
Load: 3h 32min
If Z-60 is indeed 4.5W and Nexus is 8W, then even if we take all the other components and OS differences into account the difference is still too much in favor of the latter.
Sources:
http://www.notebookcheck.net/Review-Google-Nexus-10-Tablet.86358.0.html
http://www.notebookcheck.net/Review-Fujitsu-Stylistic-Q572-Tablet.91078.0.html
8W is for the whole tablet when undocked and 15W when docked.
Contrary to your viral marketing motivated claim , this is not Temash that is docked or undocked but a whole tablet....
Some more info about big cores link.
Jim Keller says they are on track to catch up on high performance core, a function of design improvements. "We couldn't pin down a timeline for this, but with a time scale of two years core design and one year build and test, it's not going to be immediate. My expectation is 2015."
Jim Keller said:AMD are on track to catch up on high performance cores
That's a pretty bold statement for AMD to make. I'm sure SR/EX will bring good performance improvement, but they have a lot of work to catch up to the performance/watt of Intel.
Some more info about big cores link.
Jim Keller says they are on track to catch up on high performance core, a function of design improvements. "We couldn't pin down a timeline for this, but with a time scale of two years core design and one year build and test, it's not going to be immediate. My expectation is 2015."
Temash tested!!!
http://ultrabooknews.com/2013/05/10/acer-aspire-v5-122p-unboxing-amd-temash-a6-1450-first-tests/
The cinebench 11.5 scores hold up ~0.8 battery 0.9 plugged in...oddly no turbo score...
Only if your application can use all 4 threads...
That is very low. A 1,6 Jaguar quadcore would be around 1,44 points or a little bit faster than a Single-Core SB processor with more than 3GHz...
Also, if you are going to make the sacrifice for a low performance processor, battery life needs to be a lot better.
How is this amazing? Brazos has two cores on 40nm while Temash 4 cores on 28nm. If A6-1450 is really a 8W SoC this result is terrible.
How is this amazing? Brazos has two cores on 40nm while Temash 4 cores on 28nm. If A6-1450 is really a 8W SoC this result is terrible.