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Lost 4GB RAM after Overclocking

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Escienca Posted messages 427 Registration date   Status Member Last intervention   -  
Escienca Posted messages 427 Registration date   Status Member Last intervention   -
Hello,

I overclocked a processor: an AMD Sempron 145. Everything went well, I went from a single core 2.8Mhz to a dual-core 3.3Mhz, thanks to MSI's "Light Genius". However, I have a problem: of my two 4 GB RAM modules, only one is now active. I know that both are good, not burnt out, because I checked this morning before overclocking and everything was fine. To ensure that the overclocking didn't overheat one of the RAM modules, I started from scratch. And the same result: without overclocking: 8 GB, after overclocking: 4 GB!!!

In System-Test, I got this:

memory/info FAILED Meminfo total: 4047452 kB DMI total: 8192000 kB Accuracy: 49.00 Memory totals not close enough


So there are indeed about 4 GB not active. How can I recover them?

Thank you

Configuration: Linux Ubuntu 12.04 LTS

2 answers

  1.
    Escienca Posted messages 427 Registration date   Status Member Last intervention   58
     
    Hi,

    found it, you need to enter the BIOS and look for the best FSB/DRAM ratio. For me (MSI 760GM-P23 (FX) motherboard - AMD 760G chipset - AM3+ socket) it’s [1:2] which gives 952MHz.

    So, I went from an AMD Sempron 145 2.8GHz, with 4GB of RAM, to an AMD Athlon II X2 (dual core) 3.3GHz, with 8GB of RAM. MSI had a great idea with this OC Genie Lite for overclocking, it can prevent disasters. Thanks MSI. ^^

    See you soon...
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    1. Piquik31
       
      Hello,
      I would like to overclock my AMD Sempron 145 processor.
      What steps should I take?
      Is it dangerous?
      My motherboard is an MSI 760GM-P23 (FX) - AMD 760G Chipset - AM3+ Socket
      My RAM is DDR3 memory PC3-10666 4 GB 1333 MHz.
      I've heard about ratios, where should I do it?
      I searched in vain on the internet and couldn't find anything.
      Hope to hear from you soon!
      0
    2. Franck7511 Posted messages 14571 Registration date   Status Member Last intervention   1 121
       
      Try focusing on unlocking a heart instead...
      0
    3. Piquik31
       
      If I unlock a core, is it dangerous for the processor or is there nothing to worry about?
      0
    4. Franck7511 Posted messages 14571 Registration date   Status Member Last intervention   1 121
       
      It's like overclocking.
      0
    5. Piquik31
       
      What does it mean?
      What is the procedure to unlock it?
      0
  2. Escienca Posted messages 427 Registration date   Status Member Last intervention   58
     
    Hello,

    overclocking aims to "unleash" your CPU. Manufacturers, to maintain a safety margin, restrict them to a certain power level. Your "unleashed" CPU is therefore capable of handling the power of overclocking, however, before overclocking, it is important to understand that motherboards are designed for non-overclocked CPUs. The stock cooler of the AMD Sempron 145 is consequently intended for a non-overclocked CPU. So first, I recommend adding a fan to the back. To measure this fan, the best way is to place a sheet of paper behind the grille and trace the four small circles of the screws, and avoid buying it online; it’s better to go to a computer store with the sheet containing the measurements so you won't make a mistake.

    Now let's move on to overclocking the AMD Sempron 145 on an MSI 760GM-P23 (FX) - Chipset AMD 760G - Socket AM3+.

    At MSI, they had the brilliant idea (and it truly is) to create the OC Genie Lite, which will allow you to easily overclock your CPU. Here’s the procedure:

    Once you're in your BIOS, you need to go to the Cell Menu section. Once in this Cell Menu, go to OC Genie Lite and set it to Enabled. Then in the list, you should see Advanced Clock Calibration, set it to All Cores. Continuing in this list, you should find Values All Cores, as for me, I set the value in the opening list to: +4%. Then this famous Ratio, mine is set to [1:2], which gave me 952Mhz (this measurement is done automatically; it’s a complex calculation whose details are unnecessary to know, the OC Genie Lite from MSI does it by itself, thanks MSI!!!)

    Once everything is done, save the changes and exit the BIOS. After restarting, to check all the parameters of your machine under Windows 7:

    https://www.commentcamarche.net/informatique/composants/25371-tester-des-composants-de-pc-les-meilleurs-outils-gratuits/

    Under Linux, you just need to go to

    Applications-->System Tools-->System Monitor

    There you go, normally by following this procedure, your CPU should be overclocked.

    To assist you, if you have the manual for your motherboard, you can check pages 62 to 67, where you'll find the list of different items available in your BIOS.

    In conclusion, I remind you that if you overclock, it's at your own risk; it’s not a trivial operation, it can cause damage (especially overheating, hence the need to add a fan in addition to the stock cooler), so only perform this operation if you genuinely need to. In case of problems, to return to the default settings of your motherboard (factory settings), use the line Load Fail-Safe Defaults in the BIOS.

    There you go, good luck...
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