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sli / crossfire

Soldato
Joined
13 Jan 2006
Posts
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Wigan
if money were no option

which do u think is the better option

2 x 512mb 7900 gtx xxx edition in sli
or
2x 512mb x1900xt-x inn crossfire

i dont jus mean performance but stability and whathaveyou aswell. my friend has like 4k to spend and wants the ultimate gamer machine, dont care bout other parts for mo he jus unsure on whether to go sli or crossfire.

thx
joker
xx
 
Two X1900's in Crossfire would be more powerful in some games than the 7900GTX's in SLi and less powerful in others, but the difference is not even worth thinking about. Two X1900s in Crossfire is less costly than two 7900GTXs in SLi, and they would also be able to render Shader Model 3.0 HDR and antialiasing at the same time, which Nvidia cards currently cannot do.

The downside is that X1900's are a lot louder and draw a lot more power than 7900GTX's, so it's a toss-up between cost and convenience really. There are plenty of benchmarks here that you can look at with SLi and Crossfire in many newer games in a large array of resolutions, it should make it easier to decide. :)

Also keep in mind that you can't currently Crossfire two X1900 XT-X's, you would need the X1900 Crossfire Edition master card and an X1900 XT-X.
 
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Crossfire used to have problems (being limited in resolution and refresh rate, for example), but it's fine now. In fact, ATi just released a patch for Oblivion that boosts performance by up to 80% with Crossfire, so it's obviously very tweakable on the software level too and will probably benefit from ATi driver support for a long time the same way that Nvidia cards and SLi do.
 
so which do u reccomend in your opinion?


also he aint going to be upgrading till after summer so do u no if ati or nvidia are going to be releasing a new card any time soon?

thx
 
It's up to your friend. To many people the noise and power draw would be enough to put them off, but I feel that the price difference is enough to justify that.

Like I said though, it's up to your friend.
 
drunknmunky said:
He could get two Zalman Vf900s with the money he saves if he gets the two ATIs over the Nvidias if noise is really an issue. ;)
Yeah, I always suggest that. A lot of people still go mad about the power draw for some reason though, and then I get called a fanboy, so I am staying as basic and impartial as possible for the corporately-challenged people out there. :)
 
Exsomnis said:
Glad to be of service. :) I hope he gets on well with whichever he buys.

But you gave nothing in this thread.

Points:



SLI is Faster and more stable.
Uses 50% less power.

Do a google its there.
the info is easy

anyone who has the money and chosses xfire over sli
just simply has not done his sums.

It really is that simple
 
crossfire is an infant at the moment, it needs more support, more nurturing, and i don't doubt crossfire will become just as fast as SLI, perhaps even faster (if were talking 7900 and X1900 in which X1900 is faster of the two in most cases, meaning in ideal circumstances and if ATI can get crossfire more efficient should have no problem beating two 7900 in SLI)

after reading a few reviews on it, SLI vs crossfire seems to follow the exact same pattern as X-whatever vs G-whatever, a lot of these reviewers are conducting unfair tests in my opinion though, compairing lesser ATI cards to newer nvidia cards, such as X850 crossfire vs. 7800GT SLI, the X850 was around to destroy nvidias 6800 series, not take on nvidias next-generation architecture, there coming to all sorts of ballsy conclusions about crossfire being inefficient and not as fast. the only way i'll remotely believe any of this is true is 1) reviewers not going 'oooh the 7800GT won in doom 3 :-O, because nvidias have always been faster in doom, similar to ATI and far cry, as far as i can see ATI > nvidia with cry. 2) stop compairing newer SLI chipsets to the first generation crossfire chipset and finally 3) compair competative cards for instace X1800 against 7800, not something ridiculous like 7800GTX in SLI against a couple of X850s, thats an unfair test and nobody here can come to any conclusions on which is the best setup without conducting some real-life fair tests (and like i asked in CPU thread, this is not an excuse for people to preach about any vast knowledge of how GPUs work or anything, people say reviews are good reading, people trust reviews, so im just taking there advice, thanks)
 
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Conjecture.

but sadly pc hardware is not that forgiving


As for the OP:

SLI is more mature, meaning better compatibilty and speed.
Benchmarks and analysis prove this.

xfire is getting better but its still behind SLI in 99% of games
 
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