AMD News Archives
Intel's Assembler Changes For JCC Erratum Are Not Hurting AMD

When writing about the Intel Jump Conditional Code (JCC) Erratum and how Intel is working to mitigate the performance hit of the CPU microcode update with patches to the GNU Assembler, there was some concern expressed by readers that it might hurt AMD performance. That does not appear to be the case.

14 November 2019 - JCC Assembler Test - 32 Comments
Linux 5.5 To Advertise RDPRU Support For AMD Zen 2 CPUs Via /proc/cpuinfo

RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.

8 October 2019 - AMD RDPRU - 8 Comments
An Early Look At The AMD EPYC Performance With The In-Development Linux 5.4 Kernel

While the Linux 5.4 cycle just officially began last week and its feature merge window not even over until this weekend, given there are AMD EPYC load balancing improvements and many other kernel improvements in general, I was eager to fire up the in-development kernel on the EPYC 7002 "Rome" series to see how the performance is looking.

25 September 2019 - AMD EPYC Rome - 2 Comments
AMD Firmware Update To Bring Boost Performance Optimizations

There has been a lot of talk recently of AMD Ryzen 3000 series processors reportedly not hitting their boost clock frequencies, whether stock coolers are adequate for hitting the boost frequencies, and other concerns around the boost behavior on these new Zen 2 processors. AMD issued a statement today they are rolling out a new BIOS/firmware update to help with boost clock frequency optimizations.

3 September 2019 - Hitting Boost Frequencies - 28 Comments
AMD Ryzen 9 3900X Power Usage Is Running Measurably Higher On Linux Than Windows

Frequently brought up following our various Ryzen 3000 "Zen 2" benchmarks like the Ryzen 9 3900X vs. Core i9 9900K gaming benchmarks is how the Ryzen 9 3900X is pulling considerably more power than the similarly equipped Intel Core i9 system and those numbers are higher than what is often cited by Windows reviewers as the difference. I've begun investigating that power difference and indeed quite quickly could see Linux power usage being higher than Windows 10.

30 August 2019 - Ryzen 9 3900X - 36 Comments
AMD Renoir Graphics Power Management Gets Wired Up

While AMD's next-gen Renoir APUs are Vega-based and not Navi, beyond the initial Linux driver enablement seen over the past few weeks coming out a few days ago were a set of patches just getting the power management in order.

26 August 2019 - Renoir APU - Add A Comment
Linux 5.3 Kernel Yielding The Best Performance Yet For AMD EPYC "Rome" CPU Performance

Among many different Linux/open-source benchmarks being worked on for the AMD EPYC "Rome" processors now that our initial launch benchmarks are out of the way are Linux distribution comparisons, checking out the BSD compatibility, and more. Some tests I wrapped up this weekend were seeing how recent Linux kernel releases perform on the AMD EPYC 7742 64-core / 128-thread processors.

17 August 2019 - AMD EPYC 7742 2P - 13 Comments

1058 AMD news articles published on Phoronix.