Posts Tagged‘replacement’

Two Dell Alienware 13 Non-Touch notebook computers.

The Ultrabook Upgrade Conundrum.

I’ve had my ASUS Zenbook UX32V for almost three years now and, if I’m quite honest, the fact that it’s managed to last this long has surprised me. Notsomuch from a “it’s still working” perspective, more that it still seems just as capable today as it did back then. Still it has begun to show its age in some regards, like the small 28GB SSD (which for some reason doesn’t show up as a unified device) being unable to do any in-place upgrades due to the limited space. Plus I figured this far down the line there was bound to be something better, sleeker and, possibly, far cheaper and so I began the search for my ultrabooks replacement. The resulting search has shown that, whilst there’s dozens of options available, compromise on one or more aspects is the name of the game.

Two Dell Alienware 13 Non-Touch notebook computers.

Two Dell Alienware 13 Non-Touch notebook computers.

Essentially what I was looking for was a modern replacement of the UX32V which, in my mind had the following features: small, light, discrete graphics and a moderately powerful CPU. Of course I’d be looking to improve on most other aspects as much as I could such as a better screen, longer battery life (it’ll get at most a couple hours when gaming now) and a large SSD so I don’t run into the same issues that I have been. In general terms pretty much every ultrabook out there ticks most of those boxes however once I start adding in certain must-have features things start to get a little sticky.

For starters a discrete graphics card isn’t exactly standard affair for an ultrabook, even though I figured since they crammed in a pretty powerful unit into the UX32V that they’d likely be everywhere the next time I went to look. No for most ultrabooks, which seem to be defined as slim and light laptops now, the graphics card of choice is the integrated Intel chipset, one that isn’t particularly stellar for anything that’s graphically intensive. Larger ultrabooks, especially those with very high res screens, tend to come with a lower end discrete card in them but, unfortunately, they also bring with them the added bulk of their size.

Indeed it seems anything that brings with it a modicum of power, whether it be from the discrete graphics chip or say a beefier processor, also comes with an additional increase in heft. After poking around for a while I found out that many of the smaller models came with a dual core chip, something which can mean it will be CPU bound for tasks. However adding in a quad core chip usually means the laptop swells in thickness in order to accommodate the additional heat output of the larger chip, usually pushing it out of ultrabook territory.

In the end the conclusion I’ve come to is that a sacrifice needs to be made so that I can get the majority of my requirements met. Out of all the ultrabooks I looked at the Alienware 13 (full disclosure: I work for Dell, their parent company) meets most of the specifications whilst unfortunately falling short on the CPU side and also being noticeably thicker than my current Zenbook is. However those are two tradeoffs I’m more than willing to make given the fact it meets everything other requirement I have and the reviews of it seem to be good. I haven’t taken the plunge yet, I’m still wondering if there’s another option out there that I haven’t seen yet, but I’m quickly finding out that having all the choice in the world may mean you really have no choice at all.

The Memristor: Moore’s Law Gets a Jolt.

The computer (or whatever Internet capable device you happen to be viewing this on) is made up of various electronic components. For the most part these are semiconductors, devices which allow the flow of electricity but don’t do it readily, but there’s also a lot of supporting electronics that are what we call fundamental components of electronics. As almost any electrical enthusiast will tell you there are 3 such components: the resistor, capacitor and inductor each of them with their own set of properties that makes them useful in electronic circuits. There’s been speculation of a 4th fundamental component for about 40 years but before I talk about that I’ll need to give you a quick run down on what the current fundamentals properties are.

The resistor is the simplest of the lot, all it does is impede the flow of electricity. They’re quite simple devices, usually a small brown package banded by 4 or more colours which denotes just how resistive it actually is. Resistors are often used as current limiters as the amount of current that can pass through them is directly related to the voltage and level of resistance of said resistor. In essence you can think of them as narrow pathways in which electric current has to squeeze through.

Capacitors are intriguing little devices and can be best thought of as batteries. You’ve seen them if you’ve taken apart any modern device as they’re those little canister looking things attached to the main board of said device. They work by storing charge in an electrostatic field between two metal plates that’s separated by an insulating material called a dielectric. Modern day capacitors are essentially two metal plates and the dielectric rolled up into a cylinder, something which you could see if you cut one open. I’d only recommend doing this with a “solid” capacitor as the dielectrics used in other capacitors are liquids and tend to be rather toxic and/or corrosive.

Inductors are very similar to capacitors in the respect that they also store charge but instead of an electrostatic field they store it in a magnetic field. Again you’ve probably seen them if you’ve cracked open any modern device (or say looked inside your computer) as they look like little circles of metal with wire coiled around them. They’re often referred to as “chokes” as they tend to oppose the current that induces the magnetic field within them and at high frequencies they’ll appear as a break in the circuit, useful if you’re trying to keep alternating current out of your circuit. 

For quite a long time these 3 components formed the basis of all electrical theory and nearly any component could be expressed in terms of them. However back in 1971 Leon Chua explored the symmetry between these fundamental components and inferred that there should be a 4th fundamental component, the Memristor. The name is a combination of memory and resistor and Chua stated that this component would not only have the ability to remember its resistance, but also have it changed by passing current through it. Passing current in one direction would increase the resistance and reversing it would decrease it. The implications of such a component would be huge but it wasn’t until 37 years later that the first memristor was created by researchers in HP’s lab division.

What’s really exciting about the memristor is its potential to replace other solid state storage technologies like Flash and DRAM. Due to memristor’s simplicity they are innately fast and, best of all, they can be integrated directly onto the chip of processors. If you look at the breakdown of a current generation processor you’ll notice that a good portion of the silicone used is dedicated to cache, or onboard memory. Memristors have the potential to boost the amount of onboard memory to extraordinary levels, and HP believes they’ll be doing that in just 18 months:

Williams compared HP’s resistive RAM technology against flash and claimed to meet or exceed the performance of flash memory in all categories. Read times are less than 10 nanoseconds and write/erase times are about 0.1-ns. HP is still accumulating endurance cycle data at 10^12 cycles and the retention times are measured in years, he said.

This creates the prospect of adding dense non-volatile memory as an extra layer on top of logic circuitry. “We could offer 2-Gbytes of memory per core on the processor chip. Putting non-volatile memory on top of the logic chip will buy us twenty years of Moore’s Law, said Williams.

To put this in perspective Intel’s current flagship CPU ships with a total of 8MB of cache on the CPU and that’s shared between 4 cores. A similar memristor based CPU would have a whopping 8GB of on board cache, effectively negating the need for external DRAM. Couple this with a memristor based external drive for storage and you’d have a computer that’s literally decades ahead of the curve in terms of what we thought was possible, and Moore’s Law can rest easy for a while.

This kind of technology isn’t you’re usual pie in the sky “it’ll be available in the next 10 years” malarkey, this is the real deal. HP isn’t the only one looking into this either, Samsung (one of the world’s largest flash manufacturers) has also been aggressively pursuing this technology and will likely début products around the same time. For someone like me it’s immensely exciting as it shows that there are still many great technological advances ahead of us, just waiting to be uncovered and put into practice. I can’t wait to see how the first memristor devices perform as it will truly be a generational leap ahead in technology.