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Crossfire Vs SLi? You Choose

post #1 of 42
Thread Starter 
Which do people expect will provide the fastest performance inthe future? I have read that SLi can potentially give a 60% increase in performance over a single card but only on games which can effective support either AFR or SFR.

Whilst Crossfire cards supposely will see a performance rise in all games due to the addition of "scissor-rendering" or supertile and "superAA".

Could the technologically sound principle of supertiles calculation cutting compared to the relative labour intensity of AFR mean crossfire setups will out perform SLi?
post #2 of 42
Quote:
Originally Posted by Queequeg
Which do people expect will provide the fastest performance inthe future? I have read that SLi can potentially give a 60% increase in performance over a single card but only on games which can effective support either AFR or SFR.

Whilst Crossfire cards supposely will see a performance rise in all games due to the addition of "scissor-rendering" or supertile and "superAA".

Could the technologically sound principle of supertiles calculation cutting compared to the relative labour intensity of AFR mean crossfire setups will out perform SLi?
SLI vs. Crossfire doesn't mean anything. IMO it will come down to the individual cards. I think that the new approaches to rendering mass amounts of pixels/pixel operations will be a bigger factor than sli or crossfire. ATI is heading towards more pixel operations, while NVIDIA is focussed on pumping out a lot of pixels. Whichever one of these technilogies is better will be the better multi-card system in the future. The SLI / Crossfire technology is dependent on the graphics card. It could go either way.
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post #3 of 42
I think a site already did a comparison between the two. SLI pwn3d Crossfire. Crossfire is still in it's infancy and may become much better in the future.
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post #4 of 42
Quote:
Originally Posted by Chim3ra
I think a site already did a comparison between the two. SLI pwn3d Crossfire. Crossfire is still in it's infancy and may become much better in the future.
Actually 2 X1800XTs in crossfire will beat 2 7800GTX 256s in SLI. Ive seen several benches that confirm it.
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Very nice!
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post #5 of 42
Quote:
Originally Posted by J3r3my
Actually 2 X1800XTs in crossfire will beat 2 7800GTX 256s in SLI. Ive seen several benches that confirm it.
It's still the card though. 1 X1800XT still beats 1 7800GTX 256.
Not bad at all...
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Not bad at all...
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post #6 of 42
My take on all this dual card crap is that by the time I actually need 2 cards, they'll be onto a SLI2 or Crossfire2 setup. Until I see across the board support in all my games, I'm passing. By the time they both get their act together, I'll have an entirely new machine by then.
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post #7 of 42
one things for sure.

SLI will nvidia's claim to the next gen of video rendering

and Crossfire will be ati's.

this technology will be just as effective in competing against the other as all the other tech's in the industry.

though, personally, atm i think that ATI's technology might be looking a little more into the future of rendering.

but then again,

who knows what Nvidia has up its sleeve?
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post #8 of 42
Quote:
Originally Posted by J3r3my
Actually 2 X1800XTs in crossfire will beat 2 7800GTX 256s in SLI. Ive seen several benches that confirm it.
I was told that with SLI, the cards funcion at 8x, where as with CrossFire, both cards still run at a 16x speed through the PCI bridge. Is that why the CrossFire results have been better?
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post #9 of 42
Quote:
Originally Posted by Regulus
I was told that with SLI, the cards funcion at 8x, where as with CrossFire, both cards still run at a 16x speed through the PCI bridge. Is that why the CrossFire results have been better?
There are 2 SLI boards out now that offer 16X on both slots.
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post #10 of 42
Quote:
Originally Posted by Regulus
I was told that with SLI, the cards funcion at 8x, where as with CrossFire, both cards still run at a 16x speed through the PCI bridge. Is that why the CrossFire results have been better?
No, because both Crossfire and SLi force the cards to run in x8 bandwidth (except with the new SLi32 chipset). Doesn't matter anyway, there's isn't much need for bandwidth. Two X1800XTs beat two 7800GTXs because one X1800XT beats one 7800GTX. You can't compare the technology directly because the variable of the card cannot be isolated.
    
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