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Thread: Should I match RAM speed to FSB, or go for max speed?




  1. #1
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    I have a Barton-core Athlon XP proc with 333 MHz FSB. I'm looking to get some new RAM, but can't decide between getting 333 MHz or 400 MHz RAM. Some people have told me to match the RAM frequencies to my FSB for better performance, while others told me to go for the faster speed. What are your opinions, and (if possible) could you point out any data to back it up?
    Owner of the computer "Alatar the Blue"

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  2. #2
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    if you plan to OC your CPU then get the PC3200, if not then get the PC2700.

    With the PC3200 you can easily push the FSB of your 2800+ to 200 mhz without stressing the RAM in the slightest and you can still have low timings

    :cheers:
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  3. #3
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    I probably won't be overclocking. Thanks so far... any other input?
    Owner of the computer "Alatar the Blue"

    Athlon XP FX-53
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  4. #4
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    Overclocking or not, I generally try to go for faster memory. Even if you have no intentions of pushing the system to its limits, the higher speed capacity will allow you to run more aggressive memory timings weith a greater degree of stability.

    Oh, and FYI, the matching memory to bandwidth is bunk. The speeds are only a measure of the highest possible speeds that the module is guaranteed to run at with stability. It in no way is indicative of the speed that it must run at to be used.
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  5. #5
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    i just put up a barton xp 2500+ in this comp but i took out a pc-2700 stick cause i felt like overclocking. if i upped the bus it just wouldn't start as the memory didn't support more. am gonna get another pc-3200 stick and 1 of those asus a7n8x deluxe boards and try 2 pump this 2 3000+ speeds. or more.
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  6. #6
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    As much as Darthtanion is right, hes also wrong.
    PC2700 memory will run faster - yes, but thats overclocking.
    Same with CPUs. XP1700 athlons are made to run 1.47Ghz. They can go faster, but that OCing.
    So if youre not oveclocking your 333FSB Barton, get pc2700

  7. #7
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    Hmmm... I fail to see where running more aggressive memory TIMINGS is consdered overclocking. Please school me in this matter. :confused:

    As I stated, the more aggressive memory timings are generally a good deal more stable when using memory modules rated at a higher speed. This is certainly not overclocking as it does absolutely nothing to the FSB speeds of either the Northbridge to CPU speeds nor the speeds of the AGP/PCI bus channels. The better memory timings simply allow the memory and motherboard to work at a higher level of performance... and again, without changing any of the speeds of the system. I'm afraid that I will have to disagree with your thoughts.
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  8. #8
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    Thanks for all the great replies! After consideration (and finding a coupon), I ended up buying 2 512 MB 400 MHz dimms from Kingston for a great price. :thumb:
    Owner of the computer "Alatar the Blue"

    Athlon XP FX-53
    MSI NeoPlatinum2
    2 GB Kingston PC 3200 CL2 RAM
    ATI x800 XT
    Creative Labs Audigy 2 ZS
    21" Viewsonic Flat CRT
    Logitech Z-680 speakers
    2 x WD Raptor II
    120 GB Western Digital SE SATA HD
    Windows XP Home SP2

  9. #9
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    for some reason my Kingmax ram doesnt like being @ 400mhz...(its 3200 400mhz rated)....

    anyone with a little more experince in this than me could help?

    a7n8x rev 2
    xp 2500+
    2x kingmax pc-3200 in dc

    do i have to up the voltage a bit?
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  10. #10
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    That'd help, also, can we have more info on your system specs?Also, what about your multi settings, RAM timings, sync. setting, etc. My best guess would be either to up the voltage a bit or relax the timings a bit (or both) and then o/c the FSB to 400 (200 x2) running the RAM in 1:1 sync with the FSB. THen you can either keep your multiplier at 9 to keep the CPU at stock speed (no clue why, unless your cooling isnt that great) or set the multiplier to 10, 10.5, or 11, to get a nice o/c (2-2.2GHz). However, that's just a standard o/c, the specs on your comp would help out alot :thumb: . : peace2: Mista K6
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