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Thread: Ram Cuasing Artifacts?

  1. #1
    Formerly known as Zap. Stephen C's Avatar
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    Ram Cuasing Artifacts?

    I was running 4 sticks of CMX512-3200LLPRO happily in my system before one of the sticks went bad so I RMA'd a pair with the faulty module included to Corsair. They lost my RMA but kindly although after a fair while had passed they sent me a replacement which consisted of TWINX2048-3200C2PT.

    I asked a few quesations regarding the settings and Ramguy instructed I manualy set my voltage to 2.75 and my timings to 2-3-3-6 which I did, however..

    Upon booting up and running a game I was greated with small artifacts across the screen so I figured it may have been a bios setting but after spending hours upon hours changing settings, swapping out modules, relaxing timings, restoring defaults, installing new graphics drivers etc I just couldn't shift the artifacts except for just running a single module

    So I've been running Memtest for days now in various configurations, each individual stick in slot 1 passed except one that had an error but it passed without errors on another pass.
    Running all 4 sticks in dual channel caused Memtest to hit an "Unexpected onterruption" and halt.

    Is there something I am missing? I don't see how the new modules could have affected my pre existing one but I've tried them individually and tested over and over.

    Currently set up at this for testing purposes although numerous changes had no efffect:
    CPU Freq. 200 MHz
    Memory Freq. 133Mhz/DDR226!
    Memory Voltage: 2.75 Volts
    Memory Timings: Manual/User Define
    SDRAM CAS Latency: 2T
    SDRAM RAS to CAS Delay (tRCD): 3T
    SDRAM Row Precharge (tRP): 3T
    SDRAM Active to Precharge Delay (tRAS): 6T
    AGP Aperture - 128

    First tests I was running 1:1 DDR400

    Asus P4C800 Deluxe
    3.4 Prescott @ Stock & watercooled
    XFX 6800 Ultra @ Stock & watercooled
    Also have latest bios and drivers for everything.

  2. #2
    Anthropomorphic Personification shaithis's Avatar
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    Re: Ram Cuasing Artifacts?

    Running RAM in dual channel mode - especially with all 4 slots populated - needs the RAM chips timings to be as close as possible.

    You could try turning off dual channel mode in the BIOS and see how things go, it doesn't make a huge difference IMO.

    Did you try running Memtest on each pair of modules?
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
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  3. #3
    Formerly known as Zap. Stephen C's Avatar
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    Re: Ram Cuasing Artifacts?

    Bother pairs were at 2-3-3-6.
    I'm half way through a test with 3 modules installed, I'll test pairs and then single channel setup afterwards.

  4. #4
    Formerly known as Zap. Stephen C's Avatar
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      • CPU:
      • P4 3.4ghz @ 4.01ghz
      • Memory:
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      • 120gb Barracuda
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    Re: Ram Cuasing Artifacts?

    After hours upon hours of testing (everytime I blink I see Memtest) I got several errors with all 4 modules installed, however as of this morning the Artifacts have disappeared.

    Argh..

    Ok well I was part way throguh writing that they had gone and now they've popped up again!

    CPU Temp - 40
    Ambient - 26
    GPU - 44

    I don't know what's going on

  5. #5
    HEXUS.social member Agent's Avatar
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    Re: Ram Cuasing Artifacts?

    If you're running 4 sticks, try upping the Northbridge voltage a bit as well as the RAM.
    Quote Originally Posted by Saracen View Post
    And by trying to force me to like small pants, they've alienated me.

  6. #6
    Formerly known as Zap. Stephen C's Avatar
    Join Date
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    • Stephen C's system
      • Motherboard:
      • Asus P4C800 E Deluxe
      • CPU:
      • P4 3.4ghz @ 4.01ghz
      • Memory:
      • 4GB Corsair XMS Pro LL @ 2-3-3-6
      • Storage:
      • 120gb Barracuda
      • Graphics card(s):
      • ATI HD3850
      • PSU:
      • Hiper Type R
      • Case:
      • Chieftec Ultra Dragon
      • Operating System:
      • XP
      • Monitor(s):
      • 20WGX2
      • Internet:
      • Virgin 30mb

    Re: Ram Cuasing Artifacts?

    They seem to have gone again,
    I've changed some voltages and clocks:

    Core - 1.575
    AGPVDDQ - 1.6
    DDR - 2.75
    2-2-2-5 / 184MHz
    3860MHz

    XFX6800Ultra
    475MHz
    650MHz / 1300MHz data rate

    Seems to be running smoothe.

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