Predictive Store Forwarding News Today

This week there has been talk about a revision of the AMD Ryzen 5000 desktop processors (Vermeer) on the way to deliver faster turbo clocks. It wasnt very clear, but some expected a B2 revision, spotted in the wild, to refine AMDs current offerings in some way or be instrumental in adding faster XT variants to the lineup. Perhaps to stop the gossip getting out of hand, an AMD official provided a statement to Polish tech news site Benchmark.pl, and to Toms Hardware, hopefully stamping out any mi...

This week there has been talk about a revision of the AMD Ryzen 5000 desktop processors (Vermeer) on the way to deliver faster turbo clocks. It wasnt very clear, but some expected a B2 revision, spotted in the wild, to refine AMDs current offerings in some way or be instrumental in adding faster XT variants to the lineup. Perhaps to stop the gossip getting out of hand, an AMD official provided a statement to Polish tech news site Benchmark.pl, and to Toms Hardware, hopefully stamping out any mi...

09:37 | GTX 1080 Ti Revival Rumors Are False Just as a quick update: There was a story circulating this past week about the GTX 1080 Ti allegedly being revived, particularly by EVGA, as a means to quell some of the shortage concerns. We called EVGA and asked if the 1080 Ti was getting remade, and the official answer was “no, it is not being remade. The 1080 Ti is no longer in production.” The unofficial answer when we first posed the question was “HAHA! No.” Sorry to shoot that one down...

Shutterstock Patch management is far easier said than done, and security teams may often be forced into prioritising fixes for several business-critical systems, all released at once. It’s become typical, for example, to expect dozens of patches to be released on Microsoft’s Patch Tuesday, with other vendors also routinely getting in on the act. Below, IT Pro has collated the most pressing disclosures from the last seven days, including details such as a summary of the exploit mechanism, a...

The mention of Spectre and Meltdown is enough to send chills down any InfoSec spine. A number of these batches of security vulnerabilities deal with speculative execution, and how a processor might leak data while executing code in a speculative manner. This week AMD has pre-empted the security space by detailing a potential security concerns regarding its new Zen 3-based Predictive Store Forwarding feature designed to improve code performance by predicting dependencies between loads and stores...

Publishes New Side-Channel Vulnerability in Zen 3 Processors by Jim Turley It’s not a bug, it’s a feature, if you publish it in the manual, right? AMD has taken a “white hat” approach to a possible security risk in its newest Zen 3 processors by publishing a white paper that describes the problem. Although there’s no known exploit in the field, AMD appears to be heading off any problems by detailing how, when, and where the problem might occur, and what you can do ...

AMD has disclosed a potential security vulnerability on its Zen 3 CPUs with similarities to the Spectre attack from several ...

AMD Ryzen Zen 3 processors are suffering from a security vulnerability similar to Spectre seen on Intel processors 3 years ago.

AMD has published a document warning  that Zen 3-based processors may be targeted by side-channel attacks. As per its description, this vulnerability is similar to Spectre, which plagued Intel processors three years ago. AMD Zen 3 core architecture features a new technology that improves performance by predicting the “relationship between loads and stores without waiting for the address calculation to complete”. This technology is called Predictive Store Forwarding (PSF). Most of the time,...

Again? on April 4, 2021, 10:58 28 comments In brief: AMD has confirmed that a microarchitecture optimization inside Zen 3 CPUs can be exploited in a similar fashion to the Spectre vulnerabilities that plagued Intel CPUs a few generations ago. Disabling the optimization is possible, but will carry a performance penalty that AMD doesn’t believe is worth it for all but the most critical deployments of the processors. In a recently published whitepaper, titled...