Month: July 2023

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  The Ryzen 9 7945X3D is essentially a desktop Ryzen 9 7950X3D repackaged for laptops. [credit: AMD ]

For a couple of years now, AMD has offered special versions of its desktop processors with an extra 64MB chunk of L3 cache included. This cache is layered over top of the existing CPU silicon, earning it the name "3D V-Cache," and it has proven especially successful for accelerating cache-sensitive software like games.

Today, AMD is announcing the first 3D V-Cache processor for laptops, the Ryzen 9 7945X3D. It's a version of the regular 16-core Ryzen 9 7945HX with that same 64MB chunk of cache added in, giving it a total of 144MB of L3 cache.

The 7945HX is essentially a version of the desktop Ryzen 9 7950X repackaged for use in laptops instead of high-end desktops; while chips like the similarly named 7940HS use one monolithic silicon die for everything from the CPU cores to the chipset to the integrated GPU, the 7950HX uses a pair of 8-core CPU chiplets and a separate I/O die.

Enlarge / Several examples of images generated using Stable Diffusion XL 1.0. (credit: Stable Diffusion)

On Wednesday, Stability AI released Stable Diffusion XL 1.0 (SDXL), its next-generation open weights AI image synthesis model. It can generate novel images from text descriptions and produces more detail and higher-resolution imagery than previous versions of Stable Diffusion.

As with Stable Diffusion 1.4, which made waves last August with an open source release, anyone with the proper hardware and technical know-how can download the SDXL files and run the model locally on their own machine for free.

Local operation means that there is no need to pay for access to the SDXL model, there are few censorship concerns, and the weights files (which contain the neutral network data that makes the model function) can be fine-tuned to generate specific types of imagery by hobbyists in the future.

Enlarge / A vector ecologist displays a vial of live lone star ticks. (credit: Getty | Ben McCanna)

A little over a decade ago, researchers discovered that bites from lone star ticks could cause some people to develop a food allergy to meat and meat products—an allergic condition called alpha-gal syndrome (AGS), which can vary from mild to life-threatening.

The condition is named after a carbohydrate called galactose-α-1,3-galactose (aka alpha-gal), which is commonly found on proteins in most mammals—with the important exception of primates, like humans. Alpha-gal shows up on all sorts of non-primate mammalian tissue, which means it's also in meat—such as pork, beef, rabbit, and lamb—and animal products, like milk and gelatin. Its presence on animal tissue is one of the big, long-recognized barriers to xenotransplantation—that is, transplanting pig hearts into people, for example. Human immune systems will, in part, reject the organ because of the presence of the foreign alpha-gal.

But, in recent years, researchers have also discovered that alpha-gal is in tick saliva. And, for reasons researchers still haven't worked out, some people bitten by ticks develop a type of antibody called anti-alpha-gal IgE. This antibody may help protect people from tick bites but also renders them allergic to anything with alpha-gal—i.e., mammalian meat and animal products. It's a double-edged sword that's been hypothesized to be an "allergic klendusity."

Enlarge (credit: Getty Images)

A US senator is calling on the Justice Department to hold Microsoft responsible for “negligent cybersecurity practices” that enabled Chinese espionage hackers to steal hundreds of thousands of emails from cloud customers, including officials in the US Departments of State and Commerce.

“Holding Microsoft responsible for its negligence will require a whole-of-government effort,” Ron Wyden (D-Ore.) wrote in a letter. It was sent on Thursday to the heads of the Justice Department, Cybersecurity and Infrastructure Security Agency, and the Federal Trade Commission.

Bending over backward

Wyden’s remarks echo those of other critics who say Microsoft is withholding key details about a recent hack. In disclosures involving the incident so far, Microsoft has bent over backwards to avoid saying its infrastructure—including the Azure Active Directory, a supposedly fortified part of Microsoft’s cloud offerings that large organizations use to manage single sign-on and multifactor authentication—was breached. The critics have said that details Microsoft has disclosed so far lead to the inescapable conclusion that vulnerabilities in code for Azure AD and other cloud offerings were exploited to pull off the successful hack.

Enlarge (credit: Google)

When Google announced that trackers would be able to tie in to its 3 billion-device Bluetooth tracking network at its Google I/O 2023 conference, it also said that it would make it easier for people to avoid being tracked by trackers they don't know about, like Apple AirTags.

Now Android users will soon get these "Unknown Tracker Alerts." Based on the joint specification developed by Google and Apple, and incorporating feedback from tracker-makers like Tile and Chipolo, the alerts currently work only with AirTags, but Google says it will work with tag manufacturers to expand its coverage.

For now, if an AirTag you don't own "is separated from its owner and determined to be traveling with you," a notification will tell you this and that "the owner of the tracker can see its location." Tapping the notification brings up a map tracing back to where it was first seen traveling with you. Google notes that this location data "is always encrypted and never shared with Google."

Enlarge (credit: Google)

When Google announced that trackers would be able to tie in to its 3 billion-device Bluetooth tracking network at its Google I/O 2023 conference, it also said that it would make it easier for people to avoid being tracked by trackers they don't know about, like Apple AirTags.

Now Android users will soon get these "Unknown Tracker Alerts." Based on the joint specification developed by Google and Apple, and incorporating feedback from tracker-makers like Tile and Chipolo, the alerts currently work only with AirTags, but Google says it will work with tag manufacturers to expand its coverage.

For now, if an AirTag you don't own "is separated from its owner and determined to be traveling with you," a notification will tell you this and that "the owner of the tracker can see its location." Tapping the notification brings up a map tracing back to where it was first seen traveling with you. Google notes that this location data "is always encrypted and never shared with Google."