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Thread: How to Oc ram?




  1. #1
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    Jul 2003
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    Since it is summer and i need to learn new things, i decided to do things that i just learned that is possible. Like how would you oc ram? Is that even possible, the idea of oc ram came from my friend, he has ddr400 oc'ed to 430 mhz and wonder if i can do it to with my ddr266.
    CPU: Opteron 165 @ 311x9 - 2817.8 mhz - 1.47v
    Mobo: Abit KN8-SLI
    RAM: 2x512 Crucial Ballistic Tracers500 @ 202 mhz 2-2-2-5 T1
    GFX: Asus EAX1950pro @ 648/1408
    PSU: Thermaltake 500w
    SC: Audigy 2 zs
    LCD: 22' Samsung 225bw
    Speakers: Klipsch ProMedia 5.1 Ultra
    Mouse: Logitech G5

  2. #2
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    Quote Originally Posted by AsianBatman
    Since it is summer and i need to learn new things, i decided to do things that i just learned that is possible. Like how would you oc ram? Is that even possible, the idea of oc ram came from my friend, he has ddr400 oc'ed to 430 mhz and wonder if i can do it to with my ddr266.
    When you OC your CPU your RAM follows suit and overclocks as well, according to your FSB : DDR ratio.

    Example, if your ratio (known as a divider) is 1:1, if you put your FSB to 200, your memory will also go to 200 (DDR400).

    If its 5:4 (most popular) and your FSB is 200, your memory will be at 160mhz.

    How far it can go depends on a lot of factors including manufacturer and memory timings.

    FX5900 - 3DMark2001 [20,566] - 3DMark2003 [7,281] - Aquamark3 [56,694]
    Ti4400 - 3DMark2001 [16,028]

  3. #3
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    REally, for best performance, you want your fsb to RAM ratio 1:1 . But as Soulburner said, your RAM o/c's along with your FSB, but dont forgot as it gets higher and higher to relax your timings some. :)
    <center>:cheers:</center>

  4. #4
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    thanks =D
    CPU: Opteron 165 @ 311x9 - 2817.8 mhz - 1.47v
    Mobo: Abit KN8-SLI
    RAM: 2x512 Crucial Ballistic Tracers500 @ 202 mhz 2-2-2-5 T1
    GFX: Asus EAX1950pro @ 648/1408
    PSU: Thermaltake 500w
    SC: Audigy 2 zs
    LCD: 22' Samsung 225bw
    Speakers: Klipsch ProMedia 5.1 Ultra
    Mouse: Logitech G5

  5. #5
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    May 2003
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    I posted several threads on this topic earlier today....just do a search on my name if you would like to read them.

    Soulburner's system is a good example of memory timing settings. While it's clearly well configured he would see a nice performance improvement if he was able to get his memory to run at 500MHz rather than 400MHz. He would need 3500DDR to achieve that kind of speed.

    Soulburner, I would be interested to know how your system compares to itself when run with a 800MHz FSB and 1:1 RAM speed (higher multiplier on the CPU to keep the core speed constant) vs. the 1GHz and 5:4 ratio you are currently running. I'm not that current on oc P4 systems though so I'm not even sure if it's possible to adjust your multiplier.

    Personally I'd rather run at 1:1 but since I build Athlon systems I believe it is much easier to set specific FSB speeds and use the clock multiplier to set CPU speed.
    ASUS A7N8X Deluxe, Athlon Barton 2500+ with SLK-800 and 4800rpm 80mm fan, ATi 9700Pro(AIW), Dual 256MB Corsair XMS 3200c. Seagate Barracuda SATA. 200MHz fsb with 11X multiplier, RAM latency: 2,2,2,5

  6. #6
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    The system scores MUCH higher right now than it did at stock settings (800 bus 1:1)

    I did not build this system to leave it at stock settings.

    Also, I highly doubt anyone has gotten 216mhz RAM (PC3500) to run at 250mhz (PC4000). That just isn't going to happen.

    BTW my multiplier is 12, the lower the better. That's a good #.

    FX5900 - 3DMark2001 [20,566] - 3DMark2003 [7,281] - Aquamark3 [56,694]
    Ti4400 - 3DMark2001 [16,028]

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