Featured Articles

Analysts expect ARM to do well next year

Analysts expect ARM to do well next year

British chip designer ARM could cash in on the mobile industry's rush to transition to 64-bit operating systems and hardware.

More...
Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Samsung has lost smartphone market share, ending the quarter on a low note and Xiaomi appears to be the big winner.

More...
Intel Broadwell 15W coming to CES

Intel Broadwell 15W coming to CES

It looks like Intel will be showing off its 14nm processors, codenames Broadwell, in a couple of weeks at CES 2015.

More...
Gainward GTX 980 Phantom reviewed

Gainward GTX 980 Phantom reviewed

Today we’ll be taking a closer look at the recently introduced Gainward GTX 980 4GB with the company’s trademark Phantom cooler.

More...
Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac has been in the nettop and mini-PC space for more than four years now and it has managed to carve…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Sunday, 15 September 2013 11:24

Intel Chief Engineer talks Haswell’s 5-year journey

Written by Fuad Abazovic

How Intel came to care about low power

As we all know, some of the key fundamentals of CPU design take years to develop. Intel’s new generation every second year is small miracle in itself, as the development cycles is a bit longer. Haswell that launched this June at 22nm was actually not drafted to be such an efficient mobile processor because work on Haswell started years ago.

Rani N. Borkar, Vice President General Manager, Intel Architecture Development Group mention that five years ago, when her group started the long journey of developing Haswell, the original plan was not to make it a great mobile chip. She was the leading development of Haswell and had big involvement in Bay Trail development, making her very qualified to explain the journey to 22nm products.

Five years ago Intel cared mostly about the performance of the core, not so much about power efficiency, but this was about to change. Intel recognized the need to make lower TDP on chips and necessity to make the transition in what Rani calls changing Intel’s mobile culture.

This is when the journey started. Four generations of Intel’s Core architecture got better and better, eventually culminating in Haswell as the crown jewel in Intel’s current portfolio. Intel went back to the drawing boards and made necessary optimisations and changes in order to lower TDP, create great performance that won’t kill battery life making Haswell one of the most scalable cores in the company’s history.

Haswell works scales from 84W TDP in a higher end desktop or business machines down to 17W in ultrabooks and even 4.5W in tablets that should be shortly announced. This is not all as with Broadwell transistors go almost 30 percent smaller and Intel showcased at the IDF keynote that we can see an additional 30 saving compared to Haswell. The future of Intel is high performance with turbo support, but the emphasis has clearly shifted to scalable designs, so it can tweak a CPU in order to save as much power as possible, while at the same time using the same core for high-end desktops. This is the current path.

This is also leading to another interesting trend – a lot more overlap. Haswell is going down to 4.5W, while some new Atoms will end up with Celeron and Pentium branding. To some extent the same trend applies to AMD, as some of its Jaguar-based products will replace some entry level Richland chips.

blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments