PowerEfficiency
Latest
Calxeda benchmarks claim that its server chips are 15 times more power efficient than Intel's
Calxeda may have been given the bum's rush by HP's Project Moonshot, but the company isn't taking it lying down. It's released benchmarks for its ARM-based server technology that claims it's 15 times more power-efficient than the comparable Intel Xeon. Rigging up a 1.1GHz Energycore ECX-1000 with 4GB RAM against a 3.3GHz Xeon E3-1240, the former consumed only 5.26 W compared to the 102 W of Intel's high-spec chip. While it certainly wasn't faster, power efficiency is a key concern for data centers looking to keep costs down, and if the trend continues, Santa Clara will come to regret AMD's recently announced love-in.
Koomey's law heckles Moore's in the post-PC world
Around the same time most years, (2007, 2009, 2010), someone heralds the death of Moore's law. This time it's Stanford University's Dr. Jonathan Koomey, who has found that energy efficiency roughly doubles every two years. With the rise of mobile devices, we care less if our phones and tablets can outpace a desktop and more about if a full charge will last the duration of our commute -- reducing the importance of Moore's law. Historically, efficiency has been a secondary concern as manufacturers built ever faster CPUs, but Koomey believes there is enormous room for improvement. In 1985, Dr. Richard Feynman calculated an efficiency upper limit of Factor 100 Billion -- since then we've only managed to achieve Factor 40,000. Let's just hope Quantum Computing goes mainstream before next autumn so we can get on with more important things.
IE9 is the most energy-efficient modern browser, according to Microsoft's own testing
Of all the battlefields we've witnessed in the browser wars, this one's never really crossed our minds before: energy efficiency. Yes, the power efficiency of a piece of software, not hardware, is being touted by Microsoft as a differentiating feature for its fresh new Internet Explorer 9. It's thrown together the top five most popular browsers and put them through a cycle of benchmarks -- including Microsoft's own FishIE Tank graphics acceleration test, but not the somewhat popular Adobe Flash -- while measuring how much power they use beyond what the underlying Windows 7 system needs to keep itself going. Shockingly, IE9 was the winner each and every time and there's a tenuous conclusion drawn that if you want good battery life, you'll be going with Internet Explorer. Oh well, whether you consider them a good laugh or really valuable buyer's advice, there's plenty more of these power consumption comparisons at the source link below.
'Steeper' project aims to boost electronics' power efficiency by 10x, eliminate vampire power
A research project with the lofty goal of reducing electronics' power consumption by ten times and virtually eliminating so-called vampire power may not ordinarily stand the best chance of being taken seriously, but this new initiative dubbed "Steeper" isn't exactly your ordinary research project. Led by IBM and the Ecole Polytechnique Federale de Lausanne (or EPFL), the EU-funded project will use nanotechnology in an attempt to reduce power consumption at the level of transistors and nanowires, with the ultimate goal being to reduce the operating voltage to less than 0.5 volts, thereby reducing overall power consumption by one order of magnitude. As you can see from the helpful chart above, simply cutting back on vampire power alone could put a big dent in power consumption, and the researchers also note that the project would obviously not only benefit consumer electronics, but super computers and other big sources of power consumption as well. Head on past the break for the complete press release.
Pixel Qi turns into ideal 10-inch companion display with wired and Wireless USB, 1.5W power needs
Pixel Qi has today announced it's taking the next step in its quest for global domination of sunlight-readable displays. Partnering up with German outfit Display Solution AG, the company is about to start selling its 10-inch, 1024 x 600 panels as standalone units, which you'll be able to hook up to your computer or smartphone via USB, either the wired or Wireless version. Power consumption maxes out a measly 1.5W with the LED backlight turned on, meaning that one USB tether will be sufficient to feed it both power and data. We don't know exactly how long we've waited for a secondary screen with this sort of flexibility, but it's sure been a while. Look for Display Solution to start selling these hotcakes next month.
Desktop PC components get rated for power efficiency, Intel rules the roost
With all the antitrust noise, threats to AMD, and conflicts with NVIDIA, it's hard to feel too charmed with Intel at the moment. But, if you're looking for the best combination of performance and power consumption possible, you'll have to swallow any animosity and put an Intel inside, with an efficiency piece at bit-tech.net finding that chips from that manufacturer were, on average, considerably more efficient than their AMD counterparts. That's just part of the story, the site testing everything from memory to power supplies and finding the best compromise of performance and efficiency. It's perhaps no surprise that high-efficiency PSUs trump older, hotter ones, but you might not expect to learn that desktop SSDs offer barely any improvement over their 5,400RPM platter-based brethren. Follow the article's advice and you can shed 104 watts without losing a single 3DMark point -- though you may shed quite a few dollars in the process.
