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I agree, even if it is an evga card, definitely cancle it because there's no guarantee on what's coming from both sides, who knows the 4870 might be on par with the 9800gx2 or perhaps the 4870x2 might have be oc'd to barely keep up with the gtx 260.
I agree, bad timing on buying a gfx card, wait til the benchmarks come from both sides and then decide for yourself (although unless if the micro-stuttering issue is solved with the r700, even if it more powerful than the gtx 280 you may want to take the gtx over it)
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No, it actually only has 512mb of ram. This is the common misconception, but to make it short, due to the way sli works, both gpus need a dedicated 512mb of ram that has everything mirrored on each other, meaning you really only get 512mb that you use. The r700 is supposed to change this, but no one is sure yet whether or not that's true
besides, 9800gx2 is supposed to be EOL right now anyways, last rumors were saying once the gtx series is out nvidia will phase it out (probably quickly since it can use the g92s for the 9800gtx)
2 cards are not sharing 512MB, so with AFR each card effectively renders half the pixels on the screen - isnt that how it works?
which means that calc's for only half the pixels/output are utilising each 512 memory buffer, but i dont really know how it works, assuming AFR does work effectively in some apps.
the point being that if afr works properly, 512+512MB should be available, but i dont know what happens in real life gpu/buffer sharing with dual card loads. im guessing that some apps work well and others not at all, or badly.
Last edited by adamsleath; 06-07-2008 at 04:54 AM.
i7 3610QM 1.2-3.2GHz
Not really, in fact not at all, he was talking about what would happen if the 9800gx2 was outperformed by the gtx 260, and in terms of performance that makes a difference.
Doesn't matter, the framebuffer has to be mirrored on the memory, that's why people always say even though you have sli you really only have same amount of memory as your original card, and thus why people often with sli and xfire setups opt for the higher memory version even if they don't really need it
if this is true then it seems silly, and to have redundant mirrored information is also silly.the framebuffer has to be mirrored on the memory
load sharing is how sli works; not load mirroring....but i guess the info has to be combined...where? all in one of the gcards memory buffers?
mmm a shared memory pool would be good.
i guess.
still woefully limited and expensive imo.
Last edited by adamsleath; 06-07-2008 at 05:03 AM.
i7 3610QM 1.2-3.2GHz
then it is woefully limited by redundant mirrored info.No.
Last edited by adamsleath; 06-07-2008 at 05:10 AM.
i7 3610QM 1.2-3.2GHz
easier to sit back and watch others create the problems, rather than fix them.
even easier to be a fanboy...actually maybe not.
more memory.
haha i'll pretend to be a frame buffer and just be redundanthalf redundant anyway.
Last edited by adamsleath; 06-07-2008 at 05:17 AM.
i7 3610QM 1.2-3.2GHz
^^![]()
^^
** As said like Dr. Evil ** --> You can put frikin LAZERS on their heads!
Well the thing to remember is that these new cards are going to have 1gb of memory, aren't they? So although even with 2 GTX 280's in SLI you'll still 'only' have a 1gb frame buffer, but i'm thinking this should be enough to cope with Crysis @ high res, assuming the rest of the card can keep up![]()
Its not redundant, if it wasn't mirrored you'd have tons of more microstuttering than we already do.
Exactly, why do you think there's so much argument over whether the r700 is an mcm or not? At this point I'm thinking it isn't, but it is still possible to have a shared memory pool as long as the gpus have an external memory controller. Problem with that is then you're running into possible latency issues. See why this is so difficult to fix something like this?
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