AMD EPYC 8004 Siena shows Linux performance gains over two years

The AMD EPYC 8004 "Siena" processors have demonstrated notable performance improvements on Linux systems since their launch two years ago. Benchmarks on the 64-core EPYC 8534P reveal gains from software updates, benefiting energy-efficient server deployments. These advancements highlight the value of keeping Linux stacks current for optimized total cost of ownership.

The AMD EPYC 8004 "Siena" series, introduced in September 2023, targets single-socket server platforms emphasizing energy efficiency and total cost of ownership (TCO). These processors offer up to 64 cores and 128 threads per socket, supported by six memory channels, making them suitable for cost-optimized deployments.

Recent benchmarks conducted on the AMD EPYC 8534P, a 64-core model from the series, compare its performance from launch to the present. At launch, testing used an Ubuntu 23.10 development snapshot with the Linux 6.5 kernel and GCC 13.2 compiler. In contrast, current evaluations employ Ubuntu 25.10, the Linux 6.18 LTS kernel, and GCC 15.2 compiler, showcasing enhancements from two years of software evolution.

These updates enable users who adopted EPYC 8004 servers since 2023 to extract additional performance without hardware changes. The improvements stem from advancements in the Linux ecosystem, including kernel and compiler optimizations. Looking ahead, the upcoming Ubuntu 26.04 LTS, expected in April 2026, will feature Linux kernels around 6.20 to 7.0, potentially delivering further gains, especially with enhancements in versions 6.19 and beyond.

This progression underscores the ongoing relevance of the Siena series for efficient computing, where software maturity plays a key role in maximizing hardware potential.

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Illustration of Linux 6.19 delivering 30% performance boost to legacy AMD GPUs like Radeon HD 7950 via new AMDGPU driver.
Image generated by AI

Linux 6.19 boosts legacy AMD GPUs by up to 30 percent

Reported by AI Image generated by AI

The upcoming Linux kernel 6.19 delivers significant performance improvements for older AMD graphics cards based on GCN 1.0 and GCN 1.1 architectures. These legacy GPUs, such as the Radeon HD 7950, now transition to the modern AMDGPU driver, replacing the obsolete Radeon driver after over two decades. Early benchmarks show gains of around 30 percent in various applications and games.

The Linux 6.18 kernel, released as the 2025 long-term support version, provides significant performance improvements over Linux 6.12 LTS for fifth-generation AMD EPYC processors. Benchmarks on an AMD EPYC 9755 dual-processor server demonstrate advantages from AMD-specific optimizations and general kernel enhancements. This upgrade is expected to drive adoption in enterprise and hyperscaler environments.

Reported by AI

Early tests of the Linux 6.19 development kernel on a dual AMD EPYC 9965 processor server reveal strong performance in high-performance computing workloads. Despite some scheduler issues, the kernel shows promising results for AI and HPC applications. These benchmarks compare it against the stable Linux 6.18 version.

The Linux kernel 6.19 introduces the X86_NATIVE_CPU feature, allowing native optimizations that can boost performance by 5-15% on Intel and AMD processors. This Kconfig option simplifies building kernels tailored to specific hardware using the -march=native compiler flag. Benchmarks indicate gains in tasks like encryption and scientific simulations, potentially benefiting data centers and high-performance computing.

Reported by AI

The Linux 6.19 kernel has addressed a significant scheduler performance regression, restoring efficiency after early testing revealed issues. Developers identified and patched a flaw that caused a 52.4% drop in benchmarks, ensuring smoother task management across CPU cores. This fix highlights the kernel's robust development process amid broader optimizations.

Following performance boosts in Linux 6.19, developers plan additional improvements for older AMD graphics cards, with updates arriving throughout 2026 to ensure long-term compatibility in open-source environments.

Reported by AI

An unusual 88-core processor from AMD has surfaced for sale on eBay, suggesting significant changes in data center hardware practices among major cloud operators. These units reportedly processed real workloads prior to decommissioning.

 

 

 

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