memory

Q&A: MacFixIt Answers

MacFixIt Answers is a feature in which I answer Mac-related questions sent in by our readers.

This week, readers asked questions about whether or not a memory upgrade will result in more power draw and affect battery life, managing a nonfunctional SD card after a crash, how to dismiss update notifications for one application vs. another in the Mac App Store, and how to undo a command that forces the system to boot to Safe Mode at each start-up.

I welcome contributions from readers, so if you have any suggestions or alternative approaches to these problems, please post them in … Read more

The necessity of regular use of the 'purge' command in OS X

When using your Mac, active programs, documents, and system resources will be loaded into memory (RAM), where they can be accessed quickly to run and perform computations. While active memory contents are maintained in memory, the system also keeps some recently used but inactive processes and data there in order to quickly revive them, if needed.

These memory allotments should be managed dynamically for optimum performance, but some people who regularly run low on RAM may be concerned about this and resort to using "RAM cleaning" programs. One of these is the "purge" Terminal command that … Read more

IBM packs 128TB of flash into brain-simulating supercomputer

Drawing from engineering ideas that are revamping personal computers, IBM and two Swiss universities are using flash memory to improve performance of a supercomputer designed to simulate an actual mouse brain.

But there's a lot more flash memory than you'll find in the latest laptop.

A PC's solid-state drive may come with something like 128GB to 512GB of flash memory. The mouse-brain project's specially upgraded version of a Blue Gene/Q supercomputer has 250 to 1,000 times as much flash memory -- 128 terabytes.

The supercomputer project, in conjunction with the Ecole Polytechnique Federale de … Read more

Memory compression brings RAM Doubler to OS X Mavericks

Today at the World Wide Developer Conference keynote, Apple announced a new feature in the upcoming OS X Mavericks that is reminiscent of the RAM Doubler technology available for classic Mac systems in the '90s.

In the mid-'90s, Mac systems came with 8MB to 32MB RAM, and as has always been the case, greater application usage required more RAM.

Overcoming RAM restrictions required you either purchase more RAM, or enable and expand virtual memory usage in the system's control panel to make use of the hard drive as a location for RAM contents. Unfortunately these features were either … Read more

Review: Cosmos System Care Free scans your computer for any problems

Cosmos System Care Free is touted as your all-in-one maintenance tool to keep your computer system healthy and clean. Indeed, when you first download the program, you are offered the chance for an immediate scan. However, while this program seems to be wide in scope, the free version only offers to scan your computer for problems; it doesn't fix them.

Cosmos System Care Free took more than 35 minutes to download, extract, and install on a dual processing system. The program scans for security problems including privacy issues, includes a file decryptor and encryptor, and backs up or restores … Read more

The 404 1,281: Where we take our dosh to the bank (podcast)

Spotify's "Most Viral" songs of the week:

1. Bubble Butt - Major Lazer feat. Bruno Mars, 2 Chainz, Tyga & Mystic

2. Blurred Lines - Robin Thicke

3. Royals - Lorde

4. Take Me - Tiesto

5. We Own It (Fast & Furious) - 2 Chainz, Wiz KhalifaRead more

NYC Google Street View now includes 9/11 memorial

Those who haven't had the opportunity to visit New York City and see the Memorial at the World Trade Center now can tour it via Google Street View.

Users can zoom in and out and "walk around" to view the memorial from different angles. Images from the north and south memorial pools feature the engraved names of the victims of the terrorist attacks in New York City, the Pentagon, and Shanksville, Pa. The zoom feature is precise enough to read each person's name.

Google also has expanded its coverage of New York's famed Central Park. … Read more

How to prepare for your last log-off

Technology doesn't just complicate our lives, it also does a number on our deaths.

Imagine the challenge of accounting for all of your digital assets once you've shuffled off to Buffalo. Even if you consider your e-mail, text messages, and social-media posts disposable, you've probably stored photos, videos, and very personal documents on one or more Web services. You probably want to bequeath some or all of these items to family and friends.

If you run an online business, ensuring a smooth transition in the event of your demise becomes even more important. To ease the burden … Read more

Crave Ep. 118: Memory foam chair expands when hot

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A Belgian artist has invented a memory foam chair that expands when heated up. Plus, we take a look at a $1,500 solar-powered scooter and try on the Predator Helmet. All that and more on this week's super-futuristic episode of Crave. … Read more

Self-assembling foam chair expands like popcorn

This is a new kind of flat-pack furniture. There are no Allen keys, no screws, no scratching your head over Ikea-style instructions. Instead, Noumenon designer Carl de Smet's Memories of the Future furniture just needs a little loving warmth.

It's made from shape memory polyurethane (SMP), a material invented by Mitsubishi Heavy Industry that expands when heated. This allows de Smet to manufacture the chair and squash it down to 5 percent of its size for packing and shipping. When the owner gets it home, it blows up like a balloon with the application of a little heat. … Read more