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⇱ P-State - Phoronix


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P-State is the new Intel Linux kernel driver for controlling the power states of Intel processors in a more effective way than the conventional CPUfreq driver.

P-State Articles & Reviews

AMD EPYC 9845 Makes For A Persuasive Upgrade With Performance & Energy Efficiency   Processors   2025-03-10
AMD EPYC Turin Power Profile Selection Impact On Performance & Efficiency   Software   2025-02-26
Benchmarks: Excellent Power Efficiency With 5th Gen AMD EPYC Using amd-pstate & Power Profiles   Processors   2025-02-21
Linux 6.13 Delivering Some Incremental Gains With AMD EPYC 9575F Performance   Software   2024-12-11
Early Benchmarks: AMD EPYC 9005 Performance & Power Efficiency To Lead Further With Linux 6.13   Processors   2024-11-12
Linux 6.11 Kernel Features Deliver A Lot For New/Upcoming Intel & AMD Hardware   Software   2024-08-25
One-Line Patch For Intel Meteor Lake Yields Up To 72% Better Performance, +7% Geo Mean   Software   2024-06-10
Meteor Lake EPP Tuning For Greater Performance Or Power Efficiency With Intel Ultra Core 7   Processors   2023-12-26
Linux 6.5 With AMD P-State EPP Default Brings Performance & Power Efficiency Benefits For Ryzen Servers   Software   2023-09-21
Linux 6.5+ Bringing Some Performance/Efficiency Improvements For The AMD Ryzen Z1 Extreme / ASUS ROG Ally   Software   2023-09-08
Ryzen 9 7950X Performance With The New AMD P-State Default Of Linux 6.5   Software   2023-08-24
AMD Ryzen 7 7840U Windows 11 vs. Linux CPU Performance   Software   2023-08-18
Ryzen Mobile Power/Performance With Linux 6.3's New AMD P-State EPP Driver   Software   2023-04-12
AMD P-State EPP Performance With EPYC On Linux 6.3   Software   2023-04-03
AMD Ryzen 9 7950X P-State/CPUFreq Frequency Scaling Performance On Linux   Software   2022-10-10
AMD Rembrandt CPUFreq vs. AMD P-State Linux Testing   Software   2022-10-03
Linux 5.15.35 Released With Important Performance Fix For Intel Alder Lake   Software   2022-04-20
AMD P-State vs. ACPI CPUFreq Testing With Ryzen Laptops On Linux 5.17   Software   2022-04-11
Intel Core i9 12900K P-State Governor Performance On Linux   Software   2022-01-27
Linux 5.17 Features From New AMD P-State To Xilinx Drivers, Lots Of New Hardware   Software   2022-01-23
AMD P-State v4 Linux Testing On A Ryzen 5 5500U   Software   2021-11-24
An Early Look At The AMD P-State CPPC Driver Performance vs. ACPI CPUFreq   Software   2021-09-22
Intel Xeon Platinum 8380 P-State CPU Frequency Scaling Comparison   Software   2021-06-07
Windows 10 Build 21370 vs. Ubuntu 21.04 Linux On AMD Ryzen 5900X   Operating Systems   2021-05-07
Linux's P-State Performance Governor Shows Unexpectedly Big Boosts For The Intel Core i9-11900K   Processors   2021-04-22
Initial Benchmarks Of Schedutil Performance On Linux 5.7 Show Room Still For Improvement   Software   2020-04-17
Intel P-State vs. CPUFreq Frequency Scaling Performance On The Linux 5.0 Kernel   Software   2019-03-12
P-State/CPUFreq CPU Frequency Scaling Tests For Radeon/NVIDIA Gaming With Linux 4.16   Linux Gaming   2018-04-17
Ryzen 7 CPUFreq Governor Comparison For Linux Gaming On 4.12   Software   2017-06-28
Vulkan vs. OpenGL Linux Game CPU Core Scaling   Linux Gaming   2017-06-26
P-State/CPUFreq Governor Tests With Linux 4.12 For OpenGL/Vulkan Games   Linux Gaming   2017-06-26
CPUFreq vs. P-State CPU Scaling Governor Tests On Various Vulkan/OpenGL Games   Linux Gaming   2017-04-04
Kaby Lake On Linux Plays Much Better With CPUFreq Than P-State   Processors   2017-01-11
Linux 4.8 Intel P-State vs. CPUFreq Scaling Driver/Governor Benchmarks   Software   2016-08-25
Linux 4.7 CPUFreq Schedutil Testing vs. P-State   Software   2016-05-21
Intel Skylake Performing Better With CPUFreq Than P-State For Linux Gaming   Software   2015-10-16
Intel P-State / CPUFreq CPU Scaling For Linux Gaming On Ubuntu 15.04   Software   2015-08-15
Intel P-State vs. CPUFreq Benchmarks On The i7-5960X   Software   2014-09-18
CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16   Software   2014-08-15
ACPI CPUfreq vs. Intel P-State Scaling With Linux 3.15   Software   2014-05-17

P-State Linux & Open-Source News

Linux 7.1-rc5 Released With Fixes Ramping Up From AI Coding Agents   Linux Kernel   2026-05-24
Linux 7.1 Merges AMD Dynamic EPP Fixes, Intel Bartlett Lake Scaling Fix   Linux Kernel   2026-05-22
Linux 7.2 Will Fix The Intel P-State Driver For The New Bartlett Lake CPUs   Intel   2026-05-19
New AMD Dynamic EPP Feature Causing Some Problems With Linux 7.1   AMD   2026-05-14
Linux Erroneously Thinks Intel Bartlett Lake CPUs Run At 7GHz   Intel   2026-05-08
AMD Preps Linux For CPPC HighestFreq Feature Coming With Future ACPI Spec   AMD   2026-05-05
AMD SBI Driver Preps For EPYC Venice With Linux 7.1   AMD   2026-04-24
AMD Ready With CPPC Performance Priority & Dynamic/Raw EPP In Linux 7.1   Linux Kernel   2026-04-14
Many Wonderful Improvements Expected For Linux 7.1, Especially For AMD & Intel   Linux Kernel   2026-04-12
AMD P-State Driver Introducing New Features With Linux 7.1   AMD   2026-04-02
Linux 7.0 cpupower Now Handles systemd Service Setting EPP, Intel P-State Turbo Boost   Hardware   2026-03-12
AMD CPPC Performance Priority Being Prepared For Linux - New Zen 6 Feature   AMD   2026-03-06
NVIDIA R595 Linux Driver Beta Brings New Vulkan Support & DRI3 v1.2   NVIDIA   2026-03-05
Microsoft ACPI Fan Extensions & Configurable Hibernation Threads For Linux 6.19   Linux Kernel   2025-12-03
Intel Simplifying P-State Driver's Energy Model For Newer Core Ultra CPUs   Intel   2025-10-11
Intel Thermal Daemon 2.5.10 Released With A Few Improvements   Intel   2025-10-03
Linux 6.18 Power Management Brings Panther Lake Power Slider & New Drivers   Intel   2025-09-29
Linux 6.17-rc6 Released With VMSCAPE Mitigation, FLYDIGI APEX 5 Support & Fixes   Linux Kernel   2025-09-14
Linux 6.17 Fix Lands To Address Regression With "Serious Breakage" In Hibernation   Hardware   2025-09-12
Red Hat Releases TuneD 2.26 For Adaptively Tuning Linux Systems   Hardware   2025-08-25
Linux 6.17 Power Management Refines Async Suspend/Resume, Adds More Intel Hardware   Hardware   2025-07-28
Intel PTC, Intel EAS & AMD Requested CPU Min Freq Features Merged For Linux 6.16   Hardware   2025-05-30
Linux 6.16 Lands "rt_group_sched" Option, Faster Core Offlining & Scheduler Improvements   Linux Kernel   2025-05-27
Linux 6.15 Brings Many Features For Intel & AMD Hardware   Linux Kernel   2025-05-23
SteamOS 3.7 Stable Rolls Out With Updated Linux Kernel, Expanding AMD Handheld Support   Valve   2025-05-22
FreeBSD Continues Improving Hardware Support For Framework Laptops, WiFi Devices   BSD   2025-05-21
Intel P-State Energy Aware Scheduling May Be Ready For Lunar Lake   Intel   2025-05-07
Intel Continues Exploring Energy Aware Scheduling For Hybrid CPUs Without SMT   Intel   2025-04-16
AMD Preferred Core Support For Linux Revised To Better Handle Dynamic Rankings   AMD   2025-04-09
New Documentation Aims To Help Improve AMD Zen System Debugging On Linux   AMD   2025-04-07
Linux 6.15 Further Improves AMD P-State Driver, Intel Dev Tackles A ~50% SPEC Regression   Hardware   2025-04-02
Dynamic EPP & Raw EPP Features Coming To AMD P-State Driver   AMD   2025-03-21
More Apple SoC DeviceTree Additions Being Upstreamed For Linux 6.15   Apple   2025-03-05
NVIDIA Blackwell, Continued AMD Zen 5 Benchmarking & Rust Drama Dominated February   Phoronix   2025-03-01
NVIDIA Wiring Up Autonomous Performance Level Selection To Linux CPPC CPUFreq Driver   Hardware   2025-02-13
Intel Thermal Daemon 2.5.9 Prepares For Panther Lake   Intel   2025-02-12
Bisecting The Linux 6.14 Performance Regression With System76 Thelio + AMD Threadripper   Linux Kernel   2025-02-05
Linux 6.14 Power Management: "Dominated By AMD P-State Driver Changes"   Linux Kernel   2025-01-23
Linux 6.13 Released With AutoFDO + Propeller, AMD Changes & Broader Apple Support   Linux Kernel   2025-01-19
Many Exciting Features & New Hardware Support Expected For Linux 6.14   Linux Kernel   2025-01-17
The Most Exciting Kernel Optimizations, New Hardware Support & Other Linux 6.13 Features   Linux Kernel   2025-01-16
Linux 6.14 To Bring An Important Improvement For AMD Preferred Core   AMD   2025-01-15
Linux cpupower Utility To See Improved AMD Support With Linux 6.14 Kernel   AMD   2025-01-12
AMD Continued Ramping Up Their Linux & Open-Source Investments In 2024   AMD   2024-12-27
Intel Linux Performance Optimizations & Intel's Other Open-Source Wins From 2024   Intel   2024-12-26
AMD Ryzen PCs May See More Power Savings Out-Of-The-Box With Linux 6.14   AMD   2024-12-26
Linux 6.13 Is A Great Holiday Gift For AMD Systems With Many New Features   AMD   2024-12-19
Intel P-State Energy Aware Scheduling Patches Updated For Lunar Lake   Intel   2024-12-14
AMD P-State Driver Improvements Getting Ready For Linux 6.14   AMD   2024-12-06
Apple M4, More AMD Zen 5 Benchmarks & Linux Kernel Drama From November   Phoronix   2024-12-01
Virtual CPUFreq Driver Coming With Linux 6.13 For Better Power/Performance Within VMs   Virtualization   2024-11-24
Many AMD CPU Feature Additions Land In Linux 6.13   AMD   2024-11-20
Linux 6.13 PM Switches EPYC Turin To AMD P-State, More Aggressive Default For Intel GNR   Linux Kernel   2024-11-19
Linux 6.13 Very Exciting With New Feature Code For AMD EPYC Zen 5, Intel Panther Lake   Linux Kernel   2024-11-15
Linux 6.13 To Tune Intel Granite Rapids For Better Performance Out-Of-The-Box   Intel   2024-11-14
Intel Adapting Energy Aware Scheduling "EAS" To P-State Driver For Lunar Lake   Intel   2024-11-11
Arch Linux Powered CachyOS Pulls In THP Shrinker & AMD Cache Optimizer   Arch Linux   2024-11-10
Linux 6.13 To Default To AMD P-State Driver For EPYC 9005 CPUs   AMD   2024-10-23
AMD Posts Linux Patches For EPYC To Further Enhance Performance-Per-Watt By Default   AMD   2024-10-21
AmpereOne CPPC CPUFreq Schedutil vs. Performance Governor Benchmarks   Hardware   2024-09-27
Many Intel & AMD Power Management Improvements For Linux 6.12   Hardware   2024-09-18
Linux 6.11 Features Many Exciting Updates For AMD Hardware & More   Linux Kernel   2024-09-15
Linux 6.12 Kernel To Add New Features For Intel & AMD Systems, Many Other Changes Too   Linux Kernel   2024-09-11
Device Tree Patches Posted For Review To Boot Linux On Apple A7 To A11 Devices   Apple   2024-09-11
Linux 6.12 To Enhance The Hybrid P/E Core Experience On Intel Lunar Lake   Intel   2024-09-08
Power Profiles Daemon 0.22 Released With Several AMD Improvements   Hardware   2024-09-03
AMD Preferred Core Fix Lands Ahead Of Linux 6.11-rc6   AMD   2024-08-31
AMD Developing New Heterogeneous CPU Core Driver For Linux Systems   AMD   2024-08-27
Granite Rapids Idle/P-State Work For Linux 6.12 & An Important AMD Energy Reporting Fix   Hardware   2024-08-20
Linux 6.11-rc3 Released - Boosts Intel EMR Performance, Fixes 32-bit PTI For Meltdown   Linux Kernel   2024-08-11
Linux 6.11 Merges Intel P-State Patch For Emerald Rapids To Yield Better Performance   Intel   2024-08-09
Ryzen 3000 Series Gain Workaround For AMD P-State Linux Driver   AMD   2024-08-09
Red Hat's Tuned 2.24 Can Now Control AMD Core Performance Boost   Hardware   2024-08-08
New Intel Linux Patches Continue Working To Improve Hybrid CPU Task Placement   Intel   2024-08-04
Linux 6.12 To Drop Old Code That Slows Down CPU Frequency Polling   Linux Kernel   2024-08-03
Tiny Linux Patch Up To 32% Faster, Up To 18% Less Energy For Intel Xeon Emerald Rapids   Intel   2024-08-02
Testing The AMD Heterogeneous Core Topology Linux Patches On Ryzen AI 300 Series   AMD   2024-07-31
AMD Updates DMCUB Firmware For RDNA3.5 Graphics With Strix Point   Radeon   2024-07-29
Linux 6.11-rc1 Released With Initial Intel Battlemage Support, AMD RDNA4 Primed   Linux Kernel   2024-07-28
Linux 6.11 Is Looking Good In Early Benchmarks On AMD Ryzen Threadripper   Linux Kernel   2024-07-26
AMD Core Performance Boost & Fast CPPC Land In Linux 6.11, Intel Lunar Lake Improvements   Hardware   2024-07-17
Linux 6.11 Features To Include A Lot For Intel & AMD Systems, Extensible Scheduler   Linux Kernel   2024-07-14
CachyOS Rolls Out Zen 4 Optimized Repository For Maximizing Zen 4 & Zen 5 Performance   Arch Linux   2024-07-14
Linux BSOD, NVIDIA Linux Excitement, Intel Sierra Forest & Other June Highlights   Phoronix   2024-07-01
Linux Fixing A Major Performance Issue For Intel Hybrid Systems With Buggy Firmware   Intel   2024-06-27
AMD P-State Core Performance Boost To Be Merged For Linux 6.11   AMD   2024-06-27
More AMD P-State Driver Improvements Queued For Linux 6.11   AMD   2024-06-25
Intel P-State Patches Further Tune Linux For Better Scheduling On Hybrid CPUs   Intel   2024-06-24
Fedora 41 To Replace Power-Profiles-Daemon With "Tuned"   Fedora   2024-06-18
New Linux Patches To Help Ensure Intel Xeon Servers Can Achieve Highest Frequencies   Intel   2024-06-18
AMD Fast CPPC To Be Merged For Linux 6.11   AMD   2024-06-12
AMD P-State Linux Patches Updated For Heterogeneous CPUs   AMD   2024-06-11
Updated Intel Meteor Lake Tuning For Linux Shows Huge Performance/Power Improvements   Intel   2024-06-06
Linux 6.10 Fixes AMD Zen 5 CPU Frequency Reporting With cpupower   AMD   2024-06-06
Linux cpupower Tool Fix Coming For AMD Zen 5 CPUs   AMD   2024-05-28
Updated Patches For AMD "Fast CPPC" To Yield Higher Performance At Same Power Level   AMD   2024-05-26
Linux 6.10 Delivers AMD & Intel P-State Driver Updates To Refine Power Management   Hardware   2024-05-23
Linux 6.9 Released With Faster Intel Core Ultra Performance, Larger Console Fonts Option   Linux Kernel   2024-05-12
Linux 6.10 Features Expected From The NTSYNC Driver To Performance Optimizations   Linux Kernel   2024-05-12
Linux 6.10 AMD P-State To Deliver Fixes, Better Support On Older Zen CPUs   AMD   2024-05-12
Linux 6.9 Features Many Great Improvements For Both Intel & AMD   Linux Kernel   2024-05-10
AMD Posts Patches For Improving Heterogeneous Core Type CPUs On Linux   AMD   2024-05-07
AMD Core Performance Boost For Linux Getting Per-CPU Core Controls   AMD   2024-05-07
Linux 6.9-rc7 Released: The Kernel Is Looking Good   Linux Kernel   2024-05-05
New Intel P-State Linux Driver Patches To Better Handle Hybrid Core CPUs   Intel   2024-05-05
AMD Enabling "Fast CPPC" For Even Greater Linux Performance & Power Efficiency On Some CPUs   AMD   2024-04-28
AMD Prepping Fixes & Enhancements For P-State CPUFreq Driver   AMD   2024-04-23
UPower Power Profiles Daemon v0.21 Automatically Adapts For Linux Laptop Battery Use   Hardware   2024-04-04
AMD XDNA Linux Driver For Ryzen AI, Zen 5 Compiler Support & Other AMD Q1 Highlights   AMD   2024-03-31
Linux 6.9-rc1 Released With AMD P-State Preferred Core, Larger FB Console Fonts   Linux Kernel   2024-03-24
ARM SCMI CPUFreq Driver Enabling Boost Support By Default With Linux 6.9   Arm   2024-03-19
AMD Posts Updated Linux Patches For P-State Core Performance Boost   AMD   2024-03-18
AMD P-State Preferred Core Submitted For Linux 6.9 While Intel Meteor Lake Gets Tuned   AMD   2024-03-11
Awesome Changes Coming With Linux 6.9: Lots From Intel/AMD, FUSE Passthrough & More Rust   Linux Kernel   2024-03-10
Linux 6.9 To Allow AMD P-State With ACPI CPPC V2 For Threadripper 3000 Series CPUs   AMD   2024-03-10
New Linux Patches Aim To Help Improve Intel Meteor Lake Performance & Power Efficiency   Intel   2024-02-20
More AMD SEV-SNP Support To Be Upstreamed For Linux 6.9   AMD   2024-02-01
AMD P-State Preferred Core Support Coming With Linux 6.9   AMD   2024-02-01
AMD P-State Linux Driver Gets Fixed Up For Threadripper 3000 Series CPUs   AMD   2024-01-31
Linux's x86_energy_perf_policy Utility Being Extended To AMD CPUs   AMD   2024-01-30
AMD Core Performance Boost Patches Posted For P-State Linux Driver   AMD   2024-01-26
Intel Meteor Lake CPUs Will Be Able To Clock Higher On Linux 6.8   Intel   2024-01-16
A Fix For The Severe Linux Performance Regression Spotted By Torvalds   Linux Kernel   2024-01-14
AMD P-State Preferred Core Support For Linux Tried A 13th Time   AMD   2024-01-12
Linux 6.8 Power Management Prepares For Upcoming Intel Server Processors   Linux Kernel   2024-01-09
Intel's Open-Source Contributions & Upstream Performance Optimizations Top 2023   Intel   2024-01-01
Intel Meteor Lake, Emerald Rapids & Other Popular Topics For December   Phoronix   2024-01-01
AMD Posts 11th Iteration Of P-State Preferred Core Patches For Linux   AMD   2023-11-30
Xen 4.18 Hypervisor Released With Support For New AMD EPYC & Intel Xeon CPU Features   Virtualization   2023-11-22
9-Way AMD Ryzen 7000 Series Benchmarks On Linux 6.5 / Ubuntu 23.10   AMD   2023-10-27
Ubuntu 23.10 Now Available With ZFS Desktop Install Option, Linux 6.5 Kernel   Ubuntu   2023-10-12
AMD P-State Preferred Core Support For Linux Spun Up An Eighth Time   AMD   2023-10-10
Linux 6.5 Now Powering Ubuntu 23.10   Ubuntu   2023-09-16
AMD Preferred Core Patches Updated For Linux   AMD   2023-09-06
Manjaro 23.0 Released With GNOME 44, KDE Plasma 5.27 & Xfce 4.18 Desktop Options   Operating Systems   2023-09-05
AMD P-State Fixes & Other Power Management Changes For Linux 6.6   Hardware   2023-09-04
Inception & Downfall, Linux 6.6 Development Kicking Off & Other August Highlights   Phoronix   2023-09-01
Linux 6.5 Released With AMD P-State EPP Default, USB4 v2, MIDI 2.0 & More Hardware Bits   Linux Kernel   2023-08-27
Many Features Ahead With Linux 6.6: EEVDF Scheduler, New AMD CPU Features, NVK uAPI   Linux Kernel   2023-08-27
Linux 6.5 Ready To Ship With Initial USB4 v2, More WiFi 7, AMD P-State EPP Default & More   Linux Kernel   2023-08-26
AMD P-State Preferred Core Patches For Linux Updated, Will Be Enabled By Default   AMD   2023-08-15
AMD P-State Preferred Core Handling Being Enabled For Linux   AMD   2023-08-09
Intel Graphics With Linux 6.6 Adds Tuning Knobs That Can Yield 10~15% Better Performance   Intel   2023-08-04
Linux 6.6's cpupower Utility Enables New AMD P-State Features   AMD   2023-08-01
Linux Lands Fix For Intel Hybrid CPU Frequency Scaling When Disabling E-Cores   Intel   2023-07-08
Linux 6.5 Now Defaults To AMD P-State "Active" EPP For Modern Ryzen Systems   Linux Kernel   2023-06-27
Linux 6.4 Released With Early Apple M2 Code, More WiFi 7, AMD Guided Autonomous Mode   Linux Kernel   2023-06-25
Linux 6.4 Bringing Great Improvements From AMD G.A.M. To Early Apple M2 Code, More Rust   Linux Kernel   2023-06-24
Linux cpupower Tool Being Extended For AMD P-State Features   AMD   2023-06-12
AMD Ready For Ryzen Linux Systems To Use AMD P-State Active Mode By Default   AMD   2023-06-05