So where is the technology that can store our high-definition home cinema collection on a single chip? Or every book we would ever want to read or refer to? Flash can’t do that. In labs across the world, though, an impressive array of technologies is lining up that could make such dreams achievable.
via Five ways to revolutionise computer memory – tech – 07 December 2009 – New Scientist.

I used to follow news stories on new computer memory technology on the IEEE.com website. I didn’t always understand all the terms and technologies, but I did want to know what might be coming on the market in a couples of years. Magnetic RAM seemed like a game changer as did Ferro-Electric RAM. Both of them like Flash could hold their contents without the computer being turned on. And in some ways they were superior to Flash in that they read/write cycle didn’t destroy the memory over time. Flash is known to have a useful fixed lifespan before it wears out. According to the postscript in this article at New Scientist flash memory can sustain between 10,000 and 100,000 read/write cycles before it fails. Despite this, flash memory doesn’t seem to be going away anytime soon, and begs the question where are my MRAMs and FeRAM chips?
Maybe my faith in MRAM or Magnetic RAM was misplaced. I had great hopes for it exactly because so much time had been spent working on it. Looks like they couldn’t break the 32MB barrier in terms of the effective density of the MRAM chips themselves. And FeRAM is also stuck at 128MB effectively for similar reasons. It’s very difficult to contain or restrict the area over which the magnetism acts on the bits running through the wires on the chip. It’s all about too much crosstalk on the wires.
This article mentions something called Racetrack Memory. And what about Racetrack Memory so called RRAM? It reminds me a lot of what I read about the old Sperry Univac computers that used Mercury Delay Lines to store 512bits at a time. Only now instead of acoustic waves, it’s storing actual electrons and reading them in series as needed. Cool stuff, and if I had to vote for which one is going to win, obviously Phase Change and Racetrack look like good prospects right now. I hope both of them see the light of day real soon now.


The Motorola Droid however is trying to redefine the market by keeping most of the data in the cloud at Google Inc. datacenters and doing the necessary lookups as needed over the cell phone data network. This is the exact opposite of most personal navigation devices where all the mapping and point of interest data are kept on the device and manually updated through very huge, slow downloads of new data purchased online on an annual basis (at least for me). Depending on the results Consumer Reports gets, I’ll reserve judgment. This is not likely to shift the paradigm currently of personal navigation except that the devices are going to be necessarily even more multipurpose than Garmin has made them. And unwillingly made them at that. The Garmin Nuviphone was supposed to be a big deal. But it’s a poor substitute for a much cheaper phone and more feature filled navigation device. I think the inclusion of Google Maps and Google StreetView is the next big thing in navigation as the Lane assistance differentiated TomTom from Garmin about a year and a half ago. So radical incrementalism is the order of the day still in personal GPS devices. But with an open platform for developing navigation services, who knows what the future may hold. I’m hoping the current oligarchy between Garmin and TomTom starts to crumble and someone starts to eat away at the low end or even the high end of the market. Something has got to give.

