Spitfire7 :
Im only skeptical because I have the 780i board and I know it best to stay with an nVidia card with the mobo for future SLI and compatibility issues. Also, I know if I go with the 4850X2 I cant do SLI or Cross FIre with it on that mobo. So all the charts I have been seeing are saying the 9800GX2 is still better then the gtx 280. Is that not true?
For that price I am hoping to get 2 of the 9800GX2's in SLI and I should be flying fast right? Or do you all agree that I should still go with the gtx 280 and to stay with the nVidia cards? Let me know.
ATI cards will run just fine on Nvidia board. There's no "compatibility issues," if that's what you're afraid of. You just won't have the option of sli/cf.
Benchmarks:
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=13
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=14
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=15
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=16
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=17
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=18
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=19
As for quad sli, it does not scale as well as dual sli. Benchmarks that include quad 9800gx2 are very rare, here's a few:
http://www.guru3d.com/category/call_duty_4_pc/
http://www.guru3d.com/category/vga_charts_crysis/
http://www.guru3d.com/category/vga_charts_graw_2_fuel_war/
Spitfire7 :
Dagger good point. Yes it does seem that the 9800gx2 out performs most cards as well as the gtx280. This is what I have seen and then I see another benchmark saying that the gtx280 is better. Then I hear some people say like up above that the card has issues with lowest FPS issues. So now i think its tied thus far. So still whats the real deal? I like your ideas, because i think I am a little nVidia biased, but i am trying not too be. So please continue to send your benchmarks and the real truth behind these cards.
If you check the hardware configuration of benchmarks that show gtx280 outperforming 9800gx2, they use lower clocked duals instead of quads. Duals in general bottleneck multiple gpus, whether in the form of sli/cf or x2 cards. Lowest fps issues also has more to do with cpu bottlenecking in intensive scenes rather than dual gpu itself.
Also keep in mind that x2 cards use internal sli/cf, and all the "problems" that apply to x2 cards with internal sli will apply even more to sli setups with external sli. Yet, for some reason, most people who advise against x2 cards never advise against sli/cf. If you're going to stay away from x2 cards, you might as well rule out using that sli feature of the motherboard completely. If you can put up with sli/cf, there is no reason to avoid x2 cards. Ignore the fear-mongering. There is nothing wrong with sli/cf or x2 cards.