Super Volatile

Krzysztof Szafranek's link blog

Hi, I'm Krzysztof and I make websites.
When I'm not making websites, I read these.
Nov 15, 2011 / 11:34pm

The Death Of The Spec

And such comparisons show just how clueless Consumer Reports has become. Last year, they milked “Antennagate” for the pageviews, not realizing that it could actually undermine their own credibility if the device still sold well. “Sold well” ended up being a major understatement. So in effect, they themselves highlighted that no one cares about Consumer Reports anymore. And why not? Because they Consumer Reports largely cares about specs. And consumers do not anymore.

Few years ago I knew parameters of every part of my computer. Today I don't even know what graphic card it has.

Filed under: hardware   marketing  
Nov 11, 2011 / 7:11pm

Is Moore's Party Over?

A July 2008 Communications' article by Mark Oskin entitled "The Revolution Inside the Box" pointed out that the performance curve of microprocessors almost flattened in 2004, and concluded, "No longer is the road ahead clear for microprocessors." A May 2011 article "The Future of Microprocessors," by Shekhar Borkar and Andrew Chien, declared that "Energy efficiency is the new fundamental limiter of processor performance," and asserted that "Moore's Law continues but demands radical changes in architecture and software."
more on cacm.acm.org

While performance of microprocessors still grows, the energy consumption seems to pose a barrier that will ultimately bring an end to Moore's Law.

Filed under: hardware   microprocessors  
Sep 3, 2011 / 1:42pm

Behind Intel's New Random-Number Generator

There are two possibilities, and for the briefest of moments, the circuit hovers between them. In a perfect world, it might linger like that forever. But in reality, even a small amount of thermal noise—random atomic vibrations—within the circuitry will send it racing toward one of its two stable states. It's the physically random properties of the thermal noise that determine the outcome of this otherwise indecisive circuit.

In this way, our simple digital circuit can easily harvest some of the ubiquitous randomness of nature. All we need to do is to connect those two extra transistors to a clock that regularly turns both of them on and off. Every time the clock cycles, the circuit generates one random bit.

Generating truly random numbers has always been an impossible task in software, where everything can be at best pseudorandom. Intel engineers have set out to solve it with hardware and the resulting circuit is already present in Ivy Bridge processors.

Link via @adam_craven.

Filed under: computer science   hardware   intel  
Apr 9, 2011 / 7:27pm

How to Prolong Lithium-based Batteries

Specifying battery life by the number of discharge cycles is not complete by itself; equally if not more important are temperature conditions and charging voltages. Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.

Research-based tips on using laptop and phone batteries effectively.

Filed under: hardware  
Apr 8, 2011 / 12:27am

Chinese Magical Hard-Drive

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Long live ingenuity!

Filed under: hardware   made in china  
Sep 22, 2010 / 1:00am

Revisiting Solid State Hard Drives

I had always been disappointed that hybrid hard drives, drives that combine both flash memory and traditional magnetic platters, never came to fruition. It was either traditional or SSD and nothing in between. It seemed like such an obvious "best of both worlds" scenario to me. But I recently discovered that decent hybrid drives do finally exist -- though in a small and mostly unheralded way.

Jeff Atwood on new developments in SSD technology aka "the single most efficient upgrade to your computer".

Filed under: hardware  
Jan 23, 2010 / 3:36pm

The Setup

Media_httpusesthiscom_angmx
more on usesthis.com

Computer setups of various geeks.

Filed under: hardware   software