Phase change memory breakthrough could lead to gigahertz-plus data transfers, make SSDs seem pokey

By Jon Fingas posted Jun 23rd 2012 12:19PM

Often considered the eventual successor to flash, phase change memory has had a tough time getting to the point where it would truly take over; when it takes longer to write data than conventional RAM, there's clearly a roadblock. The University of Cambridge has the potential cure through a constant-power trick that primes the needed hybrid of germanium, antimony and tellurium so that it crystalizes much faster, committing data to memory at an equally speedy rate. Sending a steady, weak electric field through the substance lets a write operation go through in just 500 picoseconds; that's 10 times faster than an earlier development without the antimony or continuous power. Researchers think it could lead to permanent storage that runs at refresh rates of a gigahertz or more. In other words, the kinds of responsiveness that would make solid-state drives break out in a sweat. Any practical use is still some distance off, although avid phase change memory producers like Micron are no doubt champing at the bit for any upgrade they can get.

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Facebook rolls out comment editing, embraces your change of heart

By James Trew posted Jun 22nd 2012 11:24AM

Facebook has long betrayed you by forwarding your drunken wall ramblings in an email for posterity. Previously, though, the only way to limit further public shame was to try to delete the comment altogether. Now, it looks like the loose fingered have been given a reprieve, as the social giant is rolling out the ability to edit your ill-thought missives long after the fact. Even better, this seems to extend back to those written in the past. Don't think you can be sneaky though, as an "edited" link will appear below, letting everyone see the thread history. So even if you change your opinion, that indecision remains for all to see.

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