Will DDR work with DDR2?

Okay, I know this is a really stupid question (probably), but this is the first time in as long as I can remember that I've had enough money to upgrade my computer, and certainly the first time I've decided to upgrade RAM.

Well, my quick question, will 240 pin DDR2 chips work in a motherboard that previously had DDR chips?

Thanks in advance,
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  1. No, they will not fit at all
  2. well does that mean that, to support DDR2, I would have to buy a new motherboard? Also, do they make 2 gig DDR RAM chips?
  3. check newegg.com to see if you can find 2 gig ddr chips (however if you are using a 32 bit operating system then your computer will have a limit of roughly 3.5 gigs of ram)

    And yes to use ddr2 or ddr3 you need to upgrade your mobo accordingly.
  4. Alright, is there any program to tell what kind of RAM I have, like 168/184? I can't open up my computer unless it's absolutely necessary. I'm running Ubuntu, but windows applications should work.

    EDIT: Oh, nevermind. I think I know what kind I have. They only have a couple models of 168 512mb cards, so chances are overwhelmed that I have 184.

    Thanks guys
  5. Yea, 168 is extremely old SDram
    (Which I order a TON of. For some stupid reason, customers ignore my advice and keep nickel and diming their 15 year old machines to death. 40 dollars here for a new PSU, 50 dollars there for a new IDE HDD, 35 dollars here for a new ODD, 80 dollars there for a tiny ram upgrade. Then again, I wont complain until my distros stop carrying these parts. :P)

    184 is DDR ram And both DDR2 and DDR3 is 240 pin ram, though they're not intercompatable.
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