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non-ecc dual channel shared ddr2 sdram

Discussion in 'Hardware' started by gkm24, Jan 17, 2005.

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  1. gkm24

    gkm24 It's My Birthday! Thread Starter

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    Hi,
    After some probing about, I finally know the difference between ecc and non-ecc. My Dell GX280 sff pc spec states "non-ecc dual channel shared ddr2 sdram memory(400mhz)". After looking about on the internet I find that a lot of suppliers state pc4200 533mhz. Could someone please tell me what the 400mhz relates to and whether it would be better to put in 533mhz. Also any reccommendations of suppliers or manufacturers would be highly welcomed.
    Thanks very much. regards, Graham.
     
  2. rmay635703

    rmay635703

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    PC3200 = DDR 400mhz as to why they would have 400mhz DDR2 is beyond me as normal ddr is available there.

    http://www.motherboards.org/reviews/hardware/1476_1.html

    DDR2 = Double Latency allows higher constant transfer speed

    I other words you wait longer to get the data but once it comes it can be sent twice as fast.

    Most people prefer the low latency standard DDR if you can use it, which I assume you can't.

    As toward whether you should buy faster DDR2 memory go ahead they are interchangable and if you do upgrade there is room for expansion in the future without tossing your memory.

    Good Luck
     
  3. SacsTC

    SacsTC

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    They are not interchangeable. DDR is 184 pin. DDr2 is 240 pin
     
  4. rmay635703

    rmay635703

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    ???? So ???

    DDR2 533mhz PC4200 is interchangable with DDR2 400mhz PC3200

    The faster speed allows for future upgrade.

    Cheers
     
  5. Triple6

    Triple6 Moderator

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    No, actually its not. In physical design the memory is different in size, pins, and voltage alone. The internal design is also signifacantly diffferent as well.

    DDR cannot be used is DDR2 slot and DDR2 cannot be used in a DDR slot.

    The GX280 comes standard with 400MHZ DDR2, you can choose to put faster 533Mhz or 667Mhz DDR2 for future upgrades or slightly better performance but not use standard DDR.
     
  6. rmay635703

    rmay635703

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    Thats what I said. I need to clarify what I write.

    DDR2 is available in the older DDR2 PC3200 400mhz variety which is somewhat rare and the newer PC4200 533mhz variety

    He can use either.
     
  7. Majixlt

    Majixlt

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    Aside from the difference in DDR and DDR2, the speed, 400 or 533 relates to the bus speed. If your system bus is 400 you might be able to use either of these, however if you excede 400 for your system bus, you stand a chance of burning the 400 mhz up.

    That awnser your question?
     
  8. SacsTC

    SacsTC

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    Sorry rmay, read your answer wrong. Thought you were saying DDR1 and DDR2 were interchangeable
     
  9. Triple6

    Triple6 Moderator

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    Yeah, same here :(
     
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