Peter's Quasi-Daily Blah-g

We’ve seen it, touched it and we fully expect it’ll be turning heads in Barcelona next week, but until now Qualcomm’s Krait chip has largely escaped the rigors of independent benchmarking. Fortunately, AnandTech has to come to our rescue once again with a characteristically thorough analysis at the source link. Those blue and green charts can speak for themselves, but if you’re in a rush then here’s the rub of it: the Krait truly is a next-gen SoC, with the dual-core 1.5GHz MSM8960-powered reference handset delivering an “insane performance advantage” of between 20 percent and 240 percent on CPU benchmarks. As we glimpsedrecently, graphics performance is somewhat less ground-breaking but still very healthy, with the 28nm process allowing the Adreno 225 GPU to run at up to 400MHz, versus 266MHz on its Adreno 220 predecessor. Oh yes, this is going to be one mother of an MWC.

 

from Engadget

At the center of modern technology lies the logic circuitry provided by semiconductor devices. Extending circuit logic to the realm of nanotechnology requires the construction of atomic-scale systems, which has proven challenging. Both the electric nature of individual atoms and the need to place them at specific points within a crystal lattice has kept scientists from creating atom-scale transistors until the present.

Now, a group of researchers has fabricated a single-atom transistor by introducing one phosphorous atom into a silicon lattice. Through the use of a scanning tunnelling microscope (STM) and hydrogen-resist lithography, Martin Fuechsle et al. placed the phosphorous atom precisely between very thin silicon leads, allowing them to measure its electrical behavior. The results show clearly that we can read both the quantum transitions within the phosphorous atom and its transistor behavior. No smaller solid-state devices are possible, so systems of this type reveal the limit of Moore’s law—the prediction about the miniaturization of technology—while pointing toward solid-state quantum computing devices.

 

 

from Ars Technica