Processors Linux Reviews & Articles

There have been 522 Linux hardware reviews and benchmark articles on Phoronix for processors. Separately, check out our news section for related product news.

After looking at the new Intel Core Ultra 7 270K Plus processor earlier this month with its nice performance evolution for Arrow Lake on Linux, today we are looking at the other new Intel desktop CPU offering: the Core Ultra 5 250K Plus that retails for just $219 USD.

With this week's launch of the AMD Ryzen 9 9950X3D2 Dual Edition I've found some of the commentary quite surprising among those arguing it's really not a competitive or interesting product. While the cost may be hard to justify at $899 USD compared to the existing Ryzen 9000 series products or Intel's new Core Plus CPUs, particularly for developers, technical computing, etc the performance of the Ryzen 9 9950X3D2 is quite interesting. I've had much enjoyment benchmarking the Ryzen 9 9950X3D2 for technical use-cases. In this article is a complementary look to my launch day AMD Ryzen 9 9950X3D2 review to better condense the 300+ benchmarks I've run to date on this flagship processor.

Today we can finally share performance benchmarks of the long-rumored AMD Ryzen 9 9950X3D2 Dual Edition processor. This new halo product for the Ryzen 9000 series desktop line-up offers captivating performance for developers frequently compiling code, creators, technical computing workloads for students or hobbyists or those not able to afford a Threadripper / EPYC type workstation, or similar heavy computing use. With the 16 cores / 32 threads and both CCDs having 3D V-Cache, the AMD Ryzen 9 9950X3D2 offers leading performance among current generation desktop processors.

Last month Intel began shipping the Intel Core Ultra 7 270K Plus "Arrow Lake Refresh" desktop processor. This is a mighty interesting processor for the $349 USD price point with more cores and a larger cache compared to the Core Ultra 7 265K and capable of delivering much of the performance of the flagship Core Ultra 9 285K Arrow Lake processor. In today's article is a look at how well the Intel Core Ultra 7 270K Plus performs under Linux with more than 340 different benchmarks representing a range of Linux workloads from gaming to creator to developer and technical computing uses.

With Intel's new Core Ultra Series 3 "Panther Lake" laptop SoCs, the Xe3-based Arc B390 graphics and much improved CPU performance capture much of the spotlight. One new capability with Panther Lake that isn't featured as much though is the new FRED capability with Flexible Return and Event Delivery. Today's Intel Panther Lake testing is looking at the very interesting performance impact of FRED on Linux.

Over the past month on Phoronix there have been a lot of benchmarks of Intel's new Core Ultra Series 3 "Panther Lake" with the Core Ultra X7 358H. One of the areas of Panther Lake not explored yet is around the CPU security mitigation impact, which is the focus of today's benchmarking. The performance tests today are not only looking at the impact of the Core Ultra X7 SoC at its default versus running in a "mitigations=off" configuration but also comparing the overall CPU security mitigation impact with the run-time toggle going back all the way to Intel Haswell era laptops.

The AMD EPYC 9755 128-core Zen 5 server processor has been benchmarked a lot at Phoronix since the EPYC 9005 "Turin" launch as their top-end Zen 5 server processor with "full fat" cores compared to the denser Zen 5C cores that extend up to the EPYC 9965 at 192 cores. For those eyeing the 128 core per socket sweet spot, there is also the EPYC 9745 that is made up of 128 Zen 5C cores that allows for a 400 Watt TDP compared to the 500 Watt EPYC 9755. Today's benchmarking is comparing the EPYC 9745 and EPYC 9755 performance and power difference.

For those curious how far Intel laptop CPU performance has evolved over the past nearly two decades, here are power and performance numbers when re-benchmarking all of the Intel-powered laptop CPUs I have on hand that are still operational from Penryn to Panther Lake. A ThinkPad from 2008 with the Core 2 Duo T9300 "Penryn" was still firing up and working with the latest upstream Intel open-source Linux driver support on Ubuntu 26.04 development. On a geo mean basis over the past 18 years from Penryn to Panther Lake, the performance was at 21.5x in over 150 benchmarks. At the most extreme was a 95x difference going from Intel's 45nm Penryn to the 18A Panther Lake.

With recently having carried out benchmarks and finding the Intel Xeon 6780E "Sierra Forest" performance has improved ~14% since launch day thanks to open-source/Linux software improvements plus also recently having carried out Xeon 6980P Granite Rapids vs. EPYC 9755 128-core benchmarks using the latest upstream software, here is a look at how the Xeon 6780E "Sierra Forest" dual socket server is comparing up against the AMD EPYC 9965 Turin Dense flagship when both are running up-to-date software.

Earlier this week I published the first Linux benchmarks of Intel's much anticipated Panther Lake with the Core Ultra X7 358H 16-core 18A processor. The Panther Lake SoC showed very nice generational gains especially with much better performance-per-Watt and the Intel Arc B390 graphics are also fascinatingly fast while continuing to be backed by open-source drivers. In today's article are more Panther Lake Linux benchmarks on the CPU side in looking at the performance potential when pushing the Core Ultra X7 358H with a higher power budget.

For those that have been very eager to hear about the Intel Core Ultra Series 3 "Panther Lake" performance on Linux, today's the day! Last Thursday the MSI Prestige 14 Flip AI+ Evo laptop arrived that is powered by the Core Ultra X7 358H. Here is a look at how that Intel Core Ultra X7 358H competes for performance and power efficiency against a wide range of other laptops on an up-to-date Linux software stack in with around 300 benchmarks.

Recently I finally got my hands on a LoongArch processor, the ISA developed by China's Loongson Technology as an evolution from their earlier use of the MIPS64 ISA and inspired by RISC-V and other modern ISAs. The Loongson-3B6000 features 12 cores / 24 threads with dual channel DDR4 ECC memory support. Here is a look at how that latest-generation LoongArch desktop processor compares to the current generation AMD Zen 5 and Intel Arrow Lake desktop processors under Linux. Plus also tossing in the Raspberry Pi 5 (Raspberry Pi 500+) for an ARM reference point.

Back in December I carried out some fresh benchmarks of the Intel Xeon 6980P vs. AMD EPYC 9755 for these competing 128 core server processors using the latest Linux software stack before closing out 2025. That was done with nearly 200 benchmarks and the AMD EPYC Turin Zen 5 processor delivered terrific performance as we have come to enjoy out of the 5th Gen EPYC line-up over the past year and several months. Since then I have ratcheted up the benchmarks with nearly 500 benchmarks between the AMD EPYC 9755 and Intel Xeon 6980P processors for an even more comprehensive look at these CPUs atop Linux 6.18 LTS.

Ahead of tomorrow's official availability of the AMD Ryzen 7 9850X3D at $499 USD, today the review embargo lifted. This faster variant to the existing Ryzen 7 9800X3D has been undergoing lots of Linux benchmarking the past two weeks for seeing the performance capabilities of this fastest 8-core 3D V-Cache processor.

As part of my end-of-year 2025 benchmarking I looked at how the Intel Xeon 6980P Granite Rapids performance evolved in the year since launch and seeing some nice open-source/Linux optimizations during that time. On the other side of the table were also benchmarks of how AMD EPYC 8004 Sienna evolved in its two years, Ubuntu 24.04 vs. 26.04 development for AMD EPYC Turin, the AMD EPYC Milan-X in its four years since launch, and also a look at the performance evolution lower down the stack with the likes of sub-$500 laptop hardware. Out today is a fresh look at how the Intel Xeon 6780E Sierra Forest has evolved in its one and a half years since its launch.

With the Dell Pro Max GB10 testing at Phoronix we have been focused on the AI performance with its Blackwell GPU as the GB10 superchip was designed for meeting the needs of AI. Many Phoronix readers have also been curious about the GB10's CPU performance in more traditional Linux workloads. So for those curious about the GB10 CPU performance, here are some Linux benchmarks focused today on the CPU performance and going up against the AMD Ryzen AI Max+ 395 "Strix Halo" within the Framework Desktop.

Lisa Su's keynote just wrapped up at CES 2026 and in turn the embargo regarding AMD's first consumer product announcements for 2026. The AMD Ryzen AI 400 series and new Ryzen 7 9850X3D 3D V-Cache processors are what's in focus for CES this year.

As part of the various end-of-year annual benchmarking comparisons and the like on Phoronix, today is a look at how the Intel Core Ultra 7 155H "Meteor Lake" performance has evolved under Ubuntu Linux in the two years since launching. Plus with next-gen Intel Panther Lake laptops expected to be showcased next week at CES, it's a good time for revisiting the Meteor Lake performance to see the difference two years have made for Intel Meteor Lake laptops on Linux.

Since receiving the Gigabyte R284-A92-AAL1 a while back as a Xeon 6900 series 2U server platform to replace the failed Intel AvenueCity reference server, I have been getting caught-up in fresh Xeon 6980P Granite Rapids benchmarks with the latest software updates over the past year. I've provided fresh looks at the DDR5-6400 vs. MRDIMM-8800 performance, the AMX benefits for AI, SNC3 vs. HEX mode, Latency Optimized Mode, Cache Aware Scheduling, and more with the fresh Linux software stack and this production Gigabyte server platform. One of the areas I have been meaning to re-visit is a fresh head-to-head benchmark battle between 5th Gen AMD EPYC "Turin" and Intel Xeon 6 "Granite Rapids". In this article is a 128-core showdown between the Xeon 6980P and EPYC 9755 128-core processors with the latest open-source Linux software as of the end of 2025.

Over the past year Intel engineers have worked a lot on Cache Aware Scheduling for the Linux kernel. The yet-to-be-merged functionality allows for the Linux kernel to better aggregate tasks sharing data to the same last level cache (LLC) domain to reduce cache misses and cache bouncing. The Cache Aware Scheduling development was led by Intel but helps other CPU vendors too for processors with multiple cache domains. Back in October I showed some nice performance wins for AMD EPYC Turin with Cache Aware Scheduling while today's article are some benchmarks of the newest CAS code and looking at the performance benefit on Xeon 6 "Granite Rapids" processors.

AMD today announced their newest member of their expansive EPYC family: the EPYC Embedded 2005 series. The new AMD EPYC Embedded 2005 Series are intended primarily for networking, storage, and industrial devices while these BGA processors will likely see other interesting thin-server uses as well.

Nearly four years have passed since AMD launched their EPYC Milan-X processors with 3D V-Cache. When recently rearranging some servers in the lab and realizing the four year anniversary was coming up in March, curiosity got the best of me in wondering where the Linux performance and energy efficiency on Milan-X is now with the latest Linux software stack compared to the numbers when Milan-X launched back in March 2022.

It's been just over one year now since the launch of the Core Ultra 9 285K and other Arrow Lake desktop processors. For those that may be considering an Arrow Lake CPU this holiday season for a Linux desktop or just curious how the power and performance has evolved one year later, here are some leading-edge benchmarks of the Intel Core Ultra 9 285K compared to the launch-day performance last October.

This week marks two years since the debut of the Ryzen Threadripper 7000 series processors. Given the occasion, I decided to revisit the Linux performance of the Threadripper 7980X compared to original benchmarks from November 2023 to see how the latest Linux software stack performs for these Zen 4 HEDT processors.

Lenovo recently sent over their new ThinkPad P1 Gen 8 laptop for review under Linux. My Linux review on that ThinkPad P1 Gen 8 laptop will be coming up in the near future along with some other benchmarks from that premium mobile workstation. But with this being the first time I've had an Intel Core Ultra 7 255H "Arrow Lake H" device at Phoronix, here are some standalone benchmarks looking at the CPU performance of that 16-core mobile processor compared to various other Intel and AMD SoCs in different laptops while running Ubuntu Linux.

A new feature of Intel Xeon 6 "Birch Stream" platforms is the "Latency Optimized Mode" performance setting. The Intel Latency Optimized Mode will keep the uncore clock frequencies higher for more consistent performance but at the cost of increased power use. For those wondering about the performance and power impact, here are some comparison benchmarks of engaging this Latency Optimized Mode with Intel Xeon 6980P "Granite Rapids" server processors.

Details during the Clearwater Forest briefing at Intel Tech Tour Arizona were rather light... Especially as for what's known about the cores already from prior events like Hot Chips and other Intel disclosures around the Darkmont E-core. But we do now know the branding: Xeon 6+ for Clearwater Forest.

In addition to announcing Clearwater Forest as Xeon 6+, Intel also used their Tech Tour 2025 Arizona event for predominantly focusing on upcoming Panther Lake SoCs for laptops shipping in 2026.

Besides the support for MRDIMM-8800 memory, another distinct advantage of Intel Xeon 6 "Granite Rapids" processors is the continued presence of Advanced Matrix Extensions (AMX). Here are some fresh benchmarks looking at the impact of AMX on the Intel Xeon 6980P processors for AI inference workloads.

Next week marks one year since the launch of the Xeon 6900P series Granite Rapids server processors. Given the occasion and a new server in the lab, here is a look at how Intel's Granite Rapids top-end Xeon 6980P server processors are performing one year after the original introduction with a production-grade server platform as well as incorporating all of the Linux software improvements over the past year.