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Tri-Sli

Post Date: 2009-05-20
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Zurginator View Drop Down
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Posts: 343 		  Quote Zurginator Quote  Post ReplyReply bullet Topic: Tri-Sli
    Posted: 20 May 2009 at 11:21pm
So I just realized... Would it be possible to tri-sli in 32-bit? Because 32 bit only supports 3GB of memory...

Or would the fact that the VRAM on the cards is mirrored make it possible?
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Axel Daemon View Drop Down
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Posts: 623 		  Quote Axel Daemon Quote  Post ReplyReply bullet Posted: 21 May 2009 at 4:10am
-adds his own question-

There's ABSOLUTELY no difference between picking Tril SLI GTX 285 1GB and the 2 GB versions right?

Other than probably allowing you to play on 30" monitors with ease with the 2GB version ahaha.


Edited by Axel Daemon - 21 May 2009 at 4:11am
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DST4ME View Drop Down
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 21 May 2009 at 5:08am
the 2
GB version is only like 2 to 5 fps better then a 1GB how is that gonna even come close to running a 2560 x 1600 resolution properly at all let along with ease.

if you tri sli with a 32bit then your os will be left with very little ram, not sure you can run it like that.

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Axel Daemon View Drop Down
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Posts: 623 		  Quote Axel Daemon Quote  Post ReplyReply bullet Posted: 21 May 2009 at 1:52pm
Isn't one of the purpose of Video Memory used so that it allows you to scale to a higher resolution without a drop in performance?

Edited by Axel Daemon - 21 May 2009 at 2:56pm
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 21 May 2009 at 4:16pm
no, more memory does not mean you can do better resolution. if that was the case then 2 x 295 would never be close to 3 x 285 (4GB vs 3GB, well almost)

the charts I have seen, depending on the game, the difference between a 1GB 285 and 2GB 285 is 2 to 5 fps.


look at the differernce of the 285 2GB to a 1GB 275, the difference is under 3fps but teh price difference is huge.



Edited by DST4ME - 21 May 2009 at 4:19pm

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Axel Daemon View Drop Down
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Posts: 623 		  Quote Axel Daemon Quote  Post ReplyReply bullet Posted: 21 May 2009 at 6:44pm
-after studying the term better-  Ok it was silly to state that the 2 GB would have an easy time handling 2560 res, that was my mistake, since even with the ram it also depends on the other specs of the graphic card.

Just to clarify my own understanding though: The purpose of it is the ability to help pass information to and forth between places in large amounts.  And or a frame buffer when loading the textures.  Have too little, and FPS will probably crap out,  Have just right and you'll be fine either way, and have an abundant excess allows you to increase the resolution in your game and helps prevent in having too much of a spike in performance, assuming the rest of the specs on the card can keep up as well when upping the resolution.

So rather than the RAM being intended to improve performance (unless you're jumping from 256 MB to 1 GB all of a sudden lol), it just helps prevent from having too much of a drop right?

Though I might just stick with the Black Edition 285 from XFX.


Edited by Axel Daemon - 21 May 2009 at 6:47pm
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 21 May 2009 at 6:57pm
well as you see at the end of the day all that amounts to like 3 fps, if the 1GB 285 is running the game over 60fps, you will see no difference from the 2GB version, cause if you are getting 60fps that means you have smooth game play, anything pass that will be pretty much unnoticeable.

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Axel Daemon View Drop Down
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Posts: 623 		  Quote Axel Daemon Quote  Post ReplyReply bullet Posted: 21 May 2009 at 7:02pm
.... You could've just said yes.  I'm not THAT dense.
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 21 May 2009 at 7:04pm
actually no, if the 1GB is getting 60fps, what drop are we talking about? maybe I misunderstood what you said.

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Axel Daemon View Drop Down
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Posts: 623 		  Quote Axel Daemon Quote  Post ReplyReply bullet Posted: 21 May 2009 at 7:33pm
I'm already past the whole matter of 1 GB, 2GB (sorry if I didn't make that clear).  I'm just talking more about the technical term behind VRAM in general, and that if there's a bottleneck, and the main cause is VRAM, you would just need more.

Like back then when it was just the GTX 280 and the 4870 that first came out.  Few months later a 1 GB ver. for the 4870 came out.  Charts showed that comparing a 512 MB to a 1 GB ver of the same card, on 1920 and up resolutions that extra VRAM did help out a bit when memory became the bottleneck. (By about 3-12 FPS depending on the game)

For people who are addicted to AA, the VRAM helps lol.
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 21 May 2009 at 7:37pm
right vram helps on those games that are hungry for it, and on the older cards did make a difference, with 275 and 285 which are already at 1GB, it won't make much of a difference, but for 8x aa or 16x af and high settings like that, its more about your GPU core, its kinda like the PC itself, what your PC can do, 90% comes from the CPU, almost the same difference your ram makes in your PC, is the difference vram makes in GPU.

so in short your vram makes very little difference if you are in the 1GB range and above

Edited by DST4ME - 21 May 2009 at 7:38pm

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