Upgrading Ram - MHz Help

By caj800
Aug 3, 2007
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  1. Hi!
    I'm trying to upgrade the RAM in my computer, but I don't fully understand the MHz on the RAM. I was told that your computer has to be able to run the RAM. I went and found my motherboard book (my computer is quite old), and It says:

    'CPU Socket: *Support AMD 600MHz~1.33GHz processor
    *Support AMD Athalon XP 1500+ ~2600+ processor
    *Support AMD Duron 850MHz~1.3GHz processor
    *Support 200/266MHz (100/133MHz) MHz CPU Bus clock
    *Reserves support for future AMD Athlon/Duron processors

    Clock Generator: *Support 200/266MHz (100/133MHz) Front Side Bus Clock
    (CPU Bus Clock)
    *Support 100/133MHz system memory clock
    *Support 33MHz PCI Bus clock
    Memory Socket: *184-pin DDR DIMM socket x2 support DDR200/DDR266
    SDRAM
    *Expandable to 2GB'

    Does this mean my cmoputer is only capable of running RAM that has 200/266MHz? Thanks in advance.

    Connor.
  2. raybay

    raybay TechSpot Evangelist Posts: 10,716   +6

    Yes, generally. But you can go to www.crucial.com. Select the brand and model, and get a report. If a faster module will work reliably, Crucial will list it.
    Memory is listed generally in two ways.
    DDR200 is PC1600
    DDR266 is PC2100
    DDR333 is PC2700
    DDR370 is PC3000

    Generally, in many machines, all of the above are interchangeable... if they are all the same, and not mixed with some PC2700 and some PC2100 or whatever. But the only way to know is to try, and that gets expensive.

    However, if Crucial says it fits, it fits, except in ASUS motherboards.
  3. caj800

    caj800 Newcomer, in training Topic Starter

    Thanks for your fast reply. I went on Crucial and it came back with this report:

    'Compatible Ram:
    DDR PC4000 • 3-4-4-8 • Unbuffered • NON-ECC • DDR500 • 2.8V • 128Meg x 64
    DDR PC4000 • 3-4-4-8 • Unbuffered • NON-ECC • DDR500 • 2.8V • 128Meg x 64
    DDR PC4000 • 2.5-4-4-8 • Unbuffered • NON-ECC • DDR500 • 2.8V • 64Meg x 64
    DDR PC4000 • 2.5-4-4-8 • Unbuffered • NON-ECC • DDR500 • 2.8V • 64Meg x 64

    Each memory slot can hold DDR PC2700,DDR PC3200,DDR PC4000 with a maximum of 1GB per slot.*



    *Not to exceed manufacturer supported memory.'

    Can you explain what this means?
    Thanks.
  4. raybay

    raybay TechSpot Evangelist Posts: 10,716   +6

    They are reporting the motherboard, not what is warranteed by the manufacturer.

    Then I would buy all PC4000, in two 1 GB modules but it is expensive and hard to find, compared to the PC3200. DDR500 is rare and as far as I know is no longer made.
  5. caj800

    caj800 Newcomer, in training Topic Starter

    It did say my computer was also compatible with PC3200, so I'll buy that, since it's cheaper.

    Thanks for your help.
    Connor.
  6. Tedster

    Tedster Techspot old timer..... Posts: 10,067   +13

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