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Dual Video Cards


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I read on another forum that Pete Hines said Oblivion is being written to benefit from SLI.

 

SLI (Scalable Link Interface) is Nvidia's solution for running two PCI-E video cards on one motherboard. The ATI equivalent is called Crossfire. There is a performance boost for games engineered to take advantage of the dual video cards.

 

Does anyone have a SLI capable motherboard out there? Is it better to use up your video card budget to get one good video card (and add another in a future upgrade), or buy two lesser SLI capable cards right from the start?

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Yeah. I've read that two GeForce 6800 GTs will mostly beat the performance of a single 7800 GT or GTX but it probably only makes sense to buy the second 6800 if you already have one in your SLI motherboard.

Buy a single GeForce 7800 GTX for your new SLI system at first. Then you can upgrade to two 7800s later.

 

Can you say Oblivion at 100 FPS?

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Well, the dual 6800GTs, under optimal conditions, perform about the same and cost quite nearly the same as the single 7800GTX.

 

Once you factor in how different games react to SLi, and the extra cost of the power supply, mainboard, and -- if you still have to use this -- the bridge chip, though, the 7800 comes out overall. However, if you're set on having an SLi-capable system, and you've done your research with regards to how the specific games you're playing work with dual cards (some actually show a performance loss, mind you) the 6800s are worth considering if it saves you a couple of bucks.

 

But then, however, you also need to look at the upgrade options. By the next generation, SLi issues will probably have been worked out, and dual card performance will probably meet or exceed the performance of a single next-generation card in all situations -- in which case it would just come down to the decision of buying the $US550 XFX Geforce 8800XGTX XXX EdiXion, or just popping in another $US300 7800GTX. If you buy SLi right off the bat, the only cost-effective option would be to get the 8800.

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  • 4 months later...
i currently have 2 6600 GTs... i would have bought just one really good one instead of 2 mediocre one but i have this accursed daly limit thing. i can run HL2 and CS:S at over 100fps, but oblivion is lover mainly bacause the areas that are loaded are mutch, mutch larger....
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  • 2 months later...
  • 3 weeks later...

you can use a single ATI in a SLI mobo, but you may not use ATI crossfire option in a SLI mobo. and vice verse.

 

ati crossfire option right now is a sligt faster than nvidia, but much much more expensive so i dont think it worth it.

 

marxist is right, getting sli you need to have a powerful sli supported psu that good ampage. and worth it to get a sli mobo with a very good north chipset. so in the end it is very expensive for marginal improvements.

 

most games right now dont get much benefit from sli. but the future it supposed to code for one card to run physic adn calculation and another to display graphic, and games will be much more benefitial for sli.

 

even so, i still think sli is more for gaming enthuasist who want the best fps. if you dont have a lot of money its cheaper imo to to buy a single card expensive card.

 

also in my opinion its better to save it and wait for the new generation dx10 card, that is if you are going to use vista too, since there will be no dx10 upgrade for windows xp. and these cards will have significant performance improvement over dx9 technology, by reducing loads on the cpu. but again i know this will be a very expensive upgrade path, i dont know how many hundred dollars they will charge for vista, and how compatitible it is. but i think this is the only way to get full graphical features of new gen games.

 

futhermore, new gen games will capitalize on the dual cpu core technology too.

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For what it's worth, I'll stick my two cents worth in here. I built an SLI system. I am extremely happy with it. I think I get great performance out of it. I run Oblivion beyond Ultra High settings.Using Fraps, it says I'm getting beween 45-60fps outside in the wilds. That's not too bad. I know there are a lot of negetive comments made about it. But it works for me. Besides Oblivion, I play Call of Duty2, Half Life2, Quake4, all on the highest setting they have. I will say this. You have to be careful with what you put in the system. SLI will not work with a lot of the hardware out there. It took me three month's worth of research, before I made my choices. So far, I don't have any problems. Doesn't mean I won't. But so far, so good.

 

My specs:

AMD Athlon 64 X-62 dual core 2.9ghz CPU

AsusM2N32-SLI deluxe MB

2 Geforce7900GS 256mb x 2, 20pipelines x 2, video cards in SLI

2G Corsair XMS PC6400 DDR2 800mhz ram

Seagate Barracuda 320G SATA II HD

Soundblaster X-Fi

 

I also have two Lite-On DVD/CD units. One recorder, one is just a player.

 

The only thing I'm lacking, is the damn dial up I'm stuck with for the time being. I can record a DVD, watch a movie, go on the internet, work on a file, all at the same time. So far, I can't find any thing out there it can't handle. I know that someday there will be. This stuff gets old fast. So like it or not, it works great, I'm having a ball, until then.

 

VERY IMPORTANT; Make sure you get the latest drivers. Especially for the video cards and the chipset. This is a new technology, and there isn't much out there for it right now. There will be.

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