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Thread: Need help w/video vs. memory quandry!

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    Exclamation Need help w/video vs. memory quandry!

    Gotta (probably stupid) question... Have seen (I think in error) several magazine articles claiming you can't see a whole 4G in 32bit windoze as video card memory is mapped into the available adressable space; is this true, as I am planning a new development system, and would hate to lose a whole gig to a pair of 512M video cards for a non-gaming system; or, as I suspect, do you just lose a chunk to memory-mapped system I/O, and GPU's handle the actual video memory space? Need 4 monitors (1-logic design, 1-operator interface design, 1-AutoCAD electricals,
    1-Visual Studio) but hate to give up a couple big xfire cards to maybe TRY a game or two; not, however, at the cost of a gig of system memory...

    Q9450 on Gigabyte GA-X48_DQ6 w/2-300G WD Velociraptors in RAID0 for system & app's; 2-32G WD Raptors in RAID0 for swapspace; 2 1T Samsung SpinPoints in RAID1 for storage - thinking about a pair of Radeon 3850's, but only come w/at least 512M...

    I am pretty sure the NUMBER of video cards will actually somewhat affect the available space, as my guess is that the video 'apperture' or frame buffer space is mapped; however, I want to be sure (before spending money to find out) that the actual video memory is not mapped to this space; I can get a PNY Quattro that will support four monitors (KDS 22"s at 1680x1050 for only $230 at NewEgg) and only has 128M or memory - but it's ~$430, plus another 50 or 60 for a pair of DVI splitters (comes with VGA splitters - someone in marketing's brain-dead); for way less than that, I can get a pair of ATI 3850's & run 'em in Xfire to occasionally run one monitor bodaciously,
    or all four for normal use, IF the video RAM itself is not actually mapped...

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    No 32 bit wont see 4 gig of memory only a 64 bit OS will see over 4 gig.
    As for the rest of your question read this
    http://www.dansdata.com/askdan00015.htm

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    any specific reason you can't go the Vista 64 bit route? This would at least solve your hardware dilemma.

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    I thought Vista32 with SP1 will recognize all 4Gig, it is not like it used to be at 3.3Gig?

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    Have had problems with too many industrial controller programming packages, comm boards, and the rev of AutoCAD I use not supporting even 64 bit XP, much less Vista...

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    i can't see a way out of this if you stay under XP 32 bit except to take the memory hit.

    I actually do not know if the amount of memory addressed is dependant on the GPU frame buffer size, that's actually a good quesion. If it does work that way, I also would not like to comment if installing two 512MB cards will steal 1GB away from you, i have no idea.

    Let us know if you find out how it works though.

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    Quote Originally Posted by Deton View Post
    I thought Vista32 with SP1 will recognize all 4Gig, it is not like it used to be at 3.3Gig?
    Is true Vista 32 bit can recognise 4 gig with a tweak in the bios. Remember reading this in some magazine will have to look it up again.

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    Quote Originally Posted by bilbat View Post
    Have had problems with too many industrial controller programming packages, comm boards, and the rev of AutoCAD I use not supporting even 64 bit XP, much less Vista...
    Is very true 64 bit is not software friendly but this is changing and hopefully in time wel see everyone using a 64 bit OS.

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    Default 512M card owners?

    Hoping someone with a 512M video card (or preferably TWO) can upload one of these:

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