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System instability - advice needed

Discussion in 'General Hardware' started by skifs, Feb 6, 2006.

  1. skifs New Member

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    Hello all.
    I am experiencing system instability during playing games or during some other high-cpu usage.

    My specs are:
    AMD AthlonXP 2500+ (11x166MHz)
    EPOX 8RDA3+ nForce2
    2x256 Mb GEIL Value PC3200 @ 166 MHz 2.0-4-4-7 (CL-RCD-RP-RAS)
    Sapphire ATI Radeon 9550 128MB (250MHz,400MHz)
    1xHitachi 80GB SATA
    1x DVD/CDRW combo
    PSU AOpen 300W
    Windows XP Pro SP2

    Thing is, when I downclock FSB everything is stable and no problems occur.

    I decided to test stability with Prime 95 and this were the results:
    Test 1: Small FFTs (max FPU stress, RAM not tested much)
    Test 2: In-place large FFTs(maximum heat,power consumption, some RAM tested)
    Test 3: Blend (tests some of everything, lots of RAM tested)

    1) CPU @11x100Mhz
    RAM @100Mhz
    All tests run continuously for several hours, no problems

    2) CPU @11x133Mhz
    RAM @133Mhz
    Same. All tests run continuously for several hours, no problems


    3) CPU @11x166Mhz(nominal clock)
    RAM @166Mhz
    Test 1: Everything ok for several hours, stable
    Tests 2&3 : After 15-40min system freezes

    3) CPU @10x200Mhz (overclocked)
    RAM @200Mhz
    Test 1: Everything ok for several hours, stable !!!!! :confused:
    Tests 2&3 : After 15-40min system freezes

    I used Motherboard monitor to sensor temps and voltages
    Temps are within normal (max. 51-52'C on full load)
    Voltages within normal (+-5%)

    I tested RAM with Memtest86 overnight and no errors reported.

    Im asking you, what could be the problem here?
    Faulty MoBo, more PSU power needed(not many components, should be enough), ram incompatible with mobo?
    What is your best guess? Help! :banghead:
     
  2. PVTCaboose1337

    PVTCaboose1337 Graphical Hacker

    Joined:
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    I am going to lay it down to you straight...

    Low ram = bad
    Low clock speed = bad
    graphics card = OK
    PSU = Upgrade to 500W
    Motherboard = outdated
     

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