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  #11 (permalink)  
Old December 22, 2008, 11:35 AM
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Same model different brands, yes.
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  #12 (permalink)  
Old December 22, 2008, 11:51 AM
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Quote:
Originally Posted by rjbarker View Post
+1....in a nutshell.

Pros
1. Superior performance at higher Resolutions with full AA n AF enabled
2. Up to 40% increase in Frame Rates under certain conditions.
3. Nvidia Drivers provide excellent support re: Scaling and enabling most games to take full advantage of SLI
4. Just so you can "have it"....and play with it!

Cons
1. Initial Cost
2. Increased heat....require a more advanced Cooling Solution in your Case.
3. Requires a beefier PSU (Nvidia anyhow)
4. Only justifiable , imo, with a 24" monitor or greater - hence if you have a smaller monitor, its not necessary, if you want it, you'll be shopping for a minimum 24" monitor.
5. Greater potential for "problems", however my experience with nVidia has been simple plug n play.....however, their have been noted problems.
6. When you want to "upgrade" in the future, you'll be stuck with 2 Cards instead of one.

Whoa...their are more Cons then Pros.....but in my case..I simply wanted it!
+2 on that, how could I miss some of those cons their, especially don't think about a dual card if you don't have a monitor large enough to fully use SLI or CF and yeah about beefier PSU, nowadays you do need a beefy PSU for a 4870CF to be on the safe side.
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Originally Posted by Generic User #2 View Post
this may the most retarded question ever, but is it possible to make mix two different [sli-able] graphics card?
As for your question sir, the asnwer is.. yes you could to a certain extent though.. go buy an evga 9800GTX and one from bfg, you can SLI for sure, go buy an evga 9800GTX and an XFX 9800GTX Overclocked, you can SLI but it will revert the overclocked cards to match speeds with the slower one. Generally you can only SLI 2 cards which are similar models, I feel stupid to say this, but you should know that you can't SLI a GTX260 and a GTX280..

Now that is for nvidia, talk about ATI things are different.. I'm not entirely sure, but I think you can Crossfire a 4850 and a 4870, a 4870/4850 and a 4870x2/4850x2, called CrossfireX.. Don't take my words on it, let somebody else confirm that.
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  #13 (permalink)  
Old December 22, 2008, 12:10 PM
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For ATI take a look here. They don't have HD48x0(X2) though.
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Old December 22, 2008, 12:15 PM
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Depends what you mean by different....different Brand 280's or 260's yes.....as for SLI'ing a 260 or 280 with anything other than the same no. However, a 260 (192 Core) can be paired with a 260 (216 Core)...
With that said, some folks will use a 260 or 280 as thier primary GPU and an older 8800 as a dedicated Physx Card, however the latter is NOT an SLI config and thier are very few advantages at this point in time to having a dedicated Physx Card.
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Old December 22, 2008, 12:17 PM
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You beat me to it Miggs!
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Old December 22, 2008, 02:49 PM
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Just want to make something clear. it shouldn't be up to 40% more FPS it should be on average 40% more FPS. Some games get nearly 100% of an increase in FPS. There are quite a few games that get 60% or more FPS with adding a second card. I truly believe the way of the future is adding more cores to GPU's.

Anyways the rest of your points are bang on.

Oh and you can crossfire a 4850 and a 4870. If ya wanted you could have a 4850 + a 4870+ a 4870 X2 all in one system but I wouldn't recommend it. It is best to keep the two cards as close as possible.
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