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[Anadtech] Haswell Ultrabook review - Core i7 4500U

post #1 of 20
Thread Starter 
It looks like Intel wasn't kidding with the 50%+ battery life gain over Ivy, quite impressive:

http://anandtech.com/show/7047/the-haswell-ultrabook-review-core-i74500u-tested

...in other news no performance increase redface.gif
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post #2 of 20
Battery life IS performance.
post #3 of 20
That is quite an impressive battery time boost!
   
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post #4 of 20
Lol. Makes my i7 laptop seem like running on solar energy on a cloudy day. biggrin.gif
    
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post #5 of 20
My god. It sips power compared to the 2630QM in my old MSI.
post #6 of 20
Can't wait for the Haswell Macbooks thumb.gif
   
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post #7 of 20
Quote:
Originally Posted by Rian View Post

Can't wait for the Haswell Macbooks thumb.gif

Macwell Has Books biggrin.gif
    
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post #8 of 20
Intel has to think about us desktop users now! biggrin.gif That is a great battery boost though.
post #9 of 20
Quote:
Intel refers to Haswell ULT’s performance in Ultrabooks as being the single largest improvement in battery life of Intel history. As far as I can tell, that’s true. Under heavy load I wouldn’t expect any substantial increase in battery life, however most notebook usage models boast significant periods of idle time. Staring at your screen, browsing the web, or even multitasking all offer opportunities for idle power optimizations to kick in. That’s where Haswell ULT excels. Using Acer’s Aspire S7 as a comparison platform and normalizing for battery capacity differences I measured anywhere from a 15% to a 60% increase in battery life thanks to the move to Haswell.

Solid, considering they didn't have to sacrifice any performance at all and CPU wise, it's pretty much uncontended. A moderate 15% boost in iGPU performance as well. Not gameplay worthy, but inching there tongue.gif
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post #10 of 20
This is a joke of a review.
Quote:
Acer dramatically increased the battery capacity of the Aspire S7 from 35Wh up to 46Wh. Despite the higher capacity battery there’s no increase in weight.
And yet only ONE of the battery benchmarks accounts for battery life/WH.

They are comparing a USED ultrabook from august 2012 to brand new factory released demo. If you look at any rough battery life expectancy charts, the old S7 should have lost roughly 30% of its battery already. Its also very rare that the only thing changed in the laptop was a new CPU and motherboard, a different model SSD can also make a huge difference, they can idle from 0.03 Watts up to 1.30 Watts. There was NO mention of LCD screen testing, a 10% decrease in brightness on the new laptop could easily result in 5% additional battery.

If youre going to review the system do it right. Dont follow anadtechs sloppy testing. There is a lot of missing/hidden information here that can easily account for the battery life gains.
Edited by s-x - 6/9/13 at 8:07am
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