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Thread: ATi HD 3870 X2 (R680); Official Specifications & Images

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  1. #1
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    Quote Originally Posted by Mike EFix View Post
    Any indication as to what the power supply req's will be? Also, I didn't see anything stating the amount of memory on the card
    Should draw less power than 2 seperate 3870's. Memory is 1 GB total, 512 MB per GPU.
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    Quote Originally Posted by Unbornchild View Post
    Should draw less power than 2 seperate 3870's. Memory is 1 GB total, 512 MB per GPU.
    Thanks for the info . ..
    Question: In single card mode with the the 3870X2, is all of the 1gig memory usable and what about 3870X2-CF? What would be the memory situation using that setup
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  3. #3
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    Quote Originally Posted by Mike EFix View Post
    Thanks for the info . ..
    Question: In single card mode with the the 3870X2, is all of the 1gig memory usable and what about 3870X2-CF? What would be the memory situation using that setup

    rumors an german newspage said, that this card can, unlike 2 single 3870 which must have all data doubled, use full 1gb in CF mode because of some ringbus or whatever.

    Not sure about single card, but who wants single card ?

    anyway, 3870X2-CF will have use of only 512 or 1024mb, depending on the rumor(truth or not). 2gb ist not possible at all.
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    Quote Originally Posted by realsmasher View Post
    rumors an german newspage said, that this card can, unlike 2 single 3870 which must have all data doubled, use full 1gb in CF mode because of some ringbus or whatever.

    Not sure about single card, but who wants single card ?

    anyway, 3870X2-CF will have use of only 512 or 1024mb, depending on the rumor(truth or not). 2gb ist not possible at all.
    That rumor is pure crap concerning the R680, it's a rumor that's about the upcoming R700. The rumor was that R700 will use 4 of the same chips and every chip would be a single stop on the ringbus-memory controller, just like R520/R580/R600/RV670 have 4 main stops on the ringbus internally, but this time each separate chips will be one of those stops.
    "When in doubt, C-4!" -- Jamie Hyneman

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    Question...........Can one of these cards be used in CROSSFIRE with the current one in my sig?? Or is it going to be a definite NO?
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  6. #6
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    Quote Originally Posted by Brother Esau View Post
    Question...........Can one of these cards be used in CROSSFIRE with the current one in my sig?? Or is it going to be a definite NO?
    Well you can CF a 3870 and a 3850, so short answer, yes...
    "To exist in this vast universe for a speck of time is the great gift of life. Our tiny sliver of time is our gift of life. It is our only life. The universe will go on, indifferent to our brief existence, but while we are here we touch not just part of that vastness, but also the lives around us. Life is the gift each of us has been given. Each life is our own and no one else's. It is precious beyond all counting. It is the greatest value we have. Cherish it for what it truly is."

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    You Misunderstood I have (1) HIS HD 3870 already and would like to know if I bought one of the "NEW" Dual HD 3870 can I run it in CROSSFIRE with my Existing HD 3870 and if the answer is Yes what are the Drawbacks if any please??
    SuperMicro X8SAX
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