AVX-512 gotcha: avoid compressing words to memory with AMD Zen 4 processors
(lemire.me)
The recent AMD processors (Zen 4) provide extensive support for the powerful AVX-512 instructions.
The recent AMD processors (Zen 4) provide extensive support for the powerful AVX-512 instructions.
Do M4 chips have a new security processor?
(eclecticlight.co)
There was a stir of excitement last year when some claimed that Apple’s M4 and the A18 chip inside iPhone 16 models had a new security processor, the Secure Exclave Processor, a sister to the Secure Enclave Processor in all modern Macs. This article considers whether there’s evidence to support that.
There was a stir of excitement last year when some claimed that Apple’s M4 and the A18 chip inside iPhone 16 models had a new security processor, the Secure Exclave Processor, a sister to the Secure Enclave Processor in all modern Macs. This article considers whether there’s evidence to support that.
Ask HN: Are there any open source RISC-V processors that I can buy and use?
(ycombinator.com)
As of now there are some places which offer small RISC-V processers, such as the StarFive JH7110 (used in DeepComputing DC-ROMA), however when I went to the website it said the CPU was proprietary. Are there any fully open source RISC-V CPUs that are not just hardware simulations that I can actually buy?
As of now there are some places which offer small RISC-V processers, such as the StarFive JH7110 (used in DeepComputing DC-ROMA), however when I went to the website it said the CPU was proprietary. Are there any fully open source RISC-V CPUs that are not just hardware simulations that I can actually buy?
New Apple CPU side-channel attacks steals data from browsers
(bleepingcomputer.com)
A team of security researchers has disclosed new side-channel vulnerabilities in modern Apple processors that could steal sensitive information from web browsers.
A team of security researchers has disclosed new side-channel vulnerabilities in modern Apple processors that could steal sensitive information from web browsers.
SiFive's P550 Microarchitecture
(chipsandcheese.com)
RISC-V is a relatively young and open source instruction set. So far, it has gained traction in microcontrollers and academic applications. For example, Nvidia replaced the Falcon microcontrollers found in their GPUs with RISC-V based ones. Numerous university projects have used RISC-V as well, like Berkeley’s BOOM. However, moving RISC-V into more consumer-visible, higher performance applications will be an arduous process.
RISC-V is a relatively young and open source instruction set. So far, it has gained traction in microcontrollers and academic applications. For example, Nvidia replaced the Falcon microcontrollers found in their GPUs with RISC-V based ones. Numerous university projects have used RISC-V as well, like Berkeley’s BOOM. However, moving RISC-V into more consumer-visible, higher performance applications will be an arduous process.
Interesting BiCMOS circuits in the Pentium, reverse-engineered
(righto.com)
Intel released the powerful Pentium processor in 1993, establishing a long-running brand of processors.
Intel released the powerful Pentium processor in 1993, establishing a long-running brand of processors.
Skymont: Intel's E-Cores reach for the Sky
(chipsandcheese.com)
The 2020s were a fun time for Intel’s Atom line, which went from an afterthought to playing a major role across Intel’s high performance client offerings.
The 2020s were a fun time for Intel’s Atom line, which went from an afterthought to playing a major role across Intel’s high performance client offerings.
SysBumps: Exploiting Speculative Execution in Apple Silicon
(dl.acm.org)
Apple silicon is the proprietary ARM-based processor that powers the mainstream of Apple devices.
Apple silicon is the proprietary ARM-based processor that powers the mainstream of Apple devices.
XiangShan – Open-source high performance RISC-V processor
(github.com/OpenXiangShan)
XiangShan (香山) is an open-source high-performance RISC-V processor project.
XiangShan (香山) is an open-source high-performance RISC-V processor project.
AMD Continued Ramping Up Their Linux and Open-Source Investments in 2024
(phoronix.com)
AMD's new products this year have not only been supported well on the server side with their new EPYC 9005 "Turin" processors but also on the consumer side with the Ryzen AI 300 series laptop and Ryzen 9000 series desktop Zen 5 processors.
AMD's new products this year have not only been supported well on the server side with their new EPYC 9005 "Turin" processors but also on the consumer side with the Ryzen AI 300 series laptop and Ryzen 9000 series desktop Zen 5 processors.
VPR: Nordic's First RISC-V Processor
(danielmangum.com)
VPR (pronounced “Viper”) is Nordic Semiconductor’s first RISC-V processor, landing in the new nRF54H and nRF54L lines of SoCs after their initial announcements in April and October of 2023 respectively.
VPR (pronounced “Viper”) is Nordic Semiconductor’s first RISC-V processor, landing in the new nRF54H and nRF54L lines of SoCs after their initial announcements in April and October of 2023 respectively.
Intel Core Ultra 9 285K "Arrow Lake" Windows 11 vs. Ubuntu Linux Performance
(phoronix.com)
One of the areas for benchmarking exploration that I had been meaning to dive into since the launch of the Intel Arrow Lake processors back in October was checking out the Microsoft Windows 11 vs. Linux performance for the new Core Ultra 9 285K flagship processor.
One of the areas for benchmarking exploration that I had been meaning to dive into since the launch of the Intel Arrow Lake processors back in October was checking out the Microsoft Windows 11 vs. Linux performance for the new Core Ultra 9 285K flagship processor.
Intel Abandons "X86S" Plans to Focus on the Regular x86-64 ISA Advisory Group
(techpowerup.com)
Intel has announced it will not proceed with X86S, an experimental instruction set architecture that aims to simplify its processor design by removing legacy support for older 32-bit and 16-bit operating modes.
Intel has announced it will not proceed with X86S, an experimental instruction set architecture that aims to simplify its processor design by removing legacy support for older 32-bit and 16-bit operating modes.
Radxa Orion O6 Mini-ITX Arm Motherboard with Cix P1 12-Core ARMv9 SoC and UEFI
(cnx-software.com)
Radxa Orion O6 is an Arm mini-ITX motherboard with performance similar to Apple M1 and Qualcomm 8cs Gen3 platform thanks to the Cix P1 12-core Armv9 processor with four Cortex-A720 cores clocked at 2.8 GHz, four Cortex-A720 cores at 2.4GHz, and four low-power Cortex-A520 cores clocked at 1.8 GHz.
Radxa Orion O6 is an Arm mini-ITX motherboard with performance similar to Apple M1 and Qualcomm 8cs Gen3 platform thanks to the Cix P1 12-core Armv9 processor with four Cortex-A720 cores clocked at 2.8 GHz, four Cortex-A720 cores at 2.4GHz, and four low-power Cortex-A520 cores clocked at 1.8 GHz.
Fujitsu Monaka CPU Target Added to GCC 15 Compiler
(phoronix.com)
Fujitsu has upstreamed support for their next-gen "Monaka" Armv9 processor into the GNU Compiler Collection codebase in time for the GCC 15 release coming out early next year.
Fujitsu has upstreamed support for their next-gen "Monaka" Armv9 processor into the GNU Compiler Collection codebase in time for the GCC 15 release coming out early next year.
M4 chips: Matrix processing and Power Modes
(eclecticlight.co)
For much of the last four years, CPU and GPU core performance have been of primary importance to those using Apple silicon Macs.
For much of the last four years, CPU and GPU core performance have been of primary importance to those using Apple silicon Macs.
M4 chips: E and P cores
(eclecticlight.co)
In the two previous articles (links at the end), I explored some of the features and properties of Performance (P) cores in Apple’s latest M4 chips. This article looks at their Efficiency (E) cores by comparison.
In the two previous articles (links at the end), I explored some of the features and properties of Performance (P) cores in Apple’s latest M4 chips. This article looks at their Efficiency (E) cores by comparison.
AMD's CPU sales are miles better than Intel
(pcguide.com)
AMD’s latest gaming processor launched on November 7th and the results are in for the new Ryzen 7 9800X3D. While we witnessed Intel’s Core Ultra launch performing worse than we imagined, the new X3D chip from its rivals has been a smash hit.
AMD’s latest gaming processor launched on November 7th and the results are in for the new Ryzen 7 9800X3D. While we witnessed Intel’s Core Ultra launch performing worse than we imagined, the new X3D chip from its rivals has been a smash hit.
Inside M4 chips: P cores
(eclecticlight.co)
This is the first in a series diving deeper into Apple’s new M4 family of chips. This starts with details of its Performance (P) cores. Comparisons of their performance against cores in earlier M-series chips will follow separately when I have completed them.
This is the first in a series diving deeper into Apple’s new M4 family of chips. This starts with details of its Performance (P) cores. Comparisons of their performance against cores in earlier M-series chips will follow separately when I have completed them.
M4 Pro Mac Mini Review: Pro Performance in a Tiny, Affordable Package
(petapixel.com)
The latest-generation Mac mini sports a fresh and improved design and Apple’s newest M4-series processors.
The latest-generation Mac mini sports a fresh and improved design and Apple’s newest M4-series processors.