1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Overclocking The AMD AM1 Athlon & Sempron APUs

Michael Larabel

Published on 14 April 2014
Written by Michael Larabel
Page 1 of 4 - 20 Comments

With the initial Linux tests of the AMD Athlon 5150 / 5350 & Sempron 2650 / 3850 out of the way, I ran some basic overclocking tests on all four of these week-old AM1 APUs.

To not much surprise given these are $60 USD parts and under, there isn't much to squeeze out of these Kabini APUs with Jaguar processor cores. Many AM1 motherboards reportedly are not even offering any overclocking options from within their UEFI setup area. Fortunately, the ASUS AM1I-A motherboard that I've been using for many of these AM1 Linux benchmarks, offers basic overclocking support.

The ASUS UEFI BIOS Utility for the AM1I-A mini-ITX motherboard allows adjusting the APU frequency, memory frequency, CPU ratio/multiplier, north bridge frequency, DRAM timings, APU voltage, and the DRAM voltage. Regarding the adjusting the multiplier on the APUs, only the AMD Athlon 5350 and Sempron 2650 that had a multiplier that could be increased beyond its default value. For all four of the APUs with the basic overclocking, when attempting to adjust the APU frequency past 105MHz, regardless of voltage, the system would become unstable.

AMD Sempron 2650 - The dual-core APU clocked at 1.45GHz by default (100 x 14.5) could be bumped to 1.50GHz with the maximum multiplier value of 15. Increasing the APU frequency to 105MHz yielded a 1.575GHz clock speed for the two AMD Jaguar cores. Bumping the APU frequency also led the system memory to running at DDR3-1399MHz (the Sempron 2650 is capped to DDR3-1333MHz over DDR3-1600MHz with the higher-end AM1 APUs.)

AMD Sempron 3850 - With not being able to increase the multiplier any higher, the quad-core 1.30GHz APU could just ramp up to 1.365GHz when increasing the CPU ratio to 105MHz and the AMD DDR3 system memory was then running at DDR3-1680MHz. Pushing past a 105MHz ratio -- as with the other APUs -- led to stability issues.

AMD Athlon 5150 - The multiplier on the Athlon 5150, which stock runs at 1.60GHz for the quad-core APU, also couldn't be increased and thus when going with the 105MHz APU frequency led to a 1.68GHz frequency for the APU and system memory.

AMD Athlon 5350 - Lastly, for the highest-end AM1 APU right now, the Athlon 5350 (2.05GHz quad-core), its ratio could be bumped from 20.5 to 21. With that bump plus a 105MHz frequency yielded a clock speed of 2.205GHz and DDR3-1680MHz for the system memory.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  2. Intel Pentium G3258 On Linux
  3. SilverStone Precision PS10
  4. ASRock Z97 Extreme6
Latest Linux Articles
  1. KVM Benchmarks On Ubuntu 14.10
  2. X.Org Server 1.16 Officially Released With Terrific Features
  3. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air
  4. Preview: Benchmarking CentOS 7.0 & Scientific Linux 7.0
Latest Linux News
  1. Fedora 21 Has Been Delayed By Three Weeks
  2. Mono Begins To Focus On Performance, Assembles A Team
  3. Oracle Linux 7 Released Today As Its RHEL7 Clone
  4. Unigine Develops City Traffic System, A Driving Simulator
  5. Intel 3.0 X.Org Driver Still Baking, New Development Release
  6. Eric Anholt Makes Progress With Broadcom VC4 Graphics Driver
  7. Intel Is Getting Very Close To OpenGL 4.0/4.1/4.2 Mesa Support
  8. Valve Is Still Hiring For SteamOS, Linux Work
  9. Users Warned About Possible Regressions With DRI3
  10. GNOME Shell Gets Wayland HiDPI Fonts, Mutter Gets Touch Gestures
Latest Forum Discussions
  1. how the US intellegentia operates:
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Radeon related kernel bug??
  4. AMD Publishes Open-Source Linux HSA Kernel Driver
  5. Next-Gen OpenGL To Be Announced Next Month
  6. Open-Source Radeon Performance Boosted By Linux 3.16
  7. Remote gui not accessible in Phoronix Test Suite 5.2
  8. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right