Am I still correct to think this way? (SLI vs. non-SLI)

Back in early 2007 when I built my current computer it was commonly accepted that the only people who went for SLI setups were people looking for benchmark numbers. The games of the day couldn't really make use of dual graphics cards and PC Gamer did a test showing that some games actually performed worse with two cards instead of one. This is the same mindset I have been in since I built this machine.

I tend to only casually keep up with the current hardware and system building trends. Have things changed since I last built a system? Can games actually benefit from having multiple graphics cards now? Is it worth the added cost and heat? Is it still better to have one single powerful graphics card or two lesser cards in SLI?

This is what I have currently selected for my new build:

-GIGABYTE GA-P55-UD4P LGA 1156 Intel P55 ATX Intel Motherboard
-Intel Core i7-860 Lynnfield 2.8GHz LGA 1156 95W Quad-Core Processor Model BX80605I7860
-Mushkin Enhanced Blackline 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory
-EVGA 01G-P3-1181-AR GeForce GTX 285 Superclocked Edition 1GB 512-bit GDDR3 PCI Express 2.0 x16 SLI Supported Video Card
-Antec P183 ATX Mid-Tower Case

I will be re-using several of the parts from my old system, mainly the hard drives and extra fans and such. I currently have a BFG 650 Watt power supply that I can re-use if I go with a single GTX 285, I would have to upgrade it to a more powerful unit if I went SLI. I have had notoriously bad luck with every ATI card I've owned so I would prefer not to tempt fate and stick with nVidia.

Another thing that I am concerned about it noise. With the setup I currently have I've got the sound down to a pretty manageable level and I would like to keep it that way. What sort of effect would multiple graphics cards have on that?

Thanks in advance for your assistance.
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  1. if you are heart set on Nvidia and on that P55 board that steps down to 8x after you add the second card, I wouldn't go beyond a pair of 275's or 260's. both great cards.
  2. I don't have my heart set on anything specific right now. I play a few new games and a handful of older ones (Crysis, COD4, WoW, Witcher, Fallout 3, Oblivion, Far Cry 2, etc). I have a Dell 2407wfp 24" monitor that runs at 1920x1200 so I play all my games at that resolution.

    If there's a better motherboard I am open to suggestions. The one I selected was the winner of the latest motherboard roundup they did here on this site. I'm guessing I would want to go with a different board if I went SLI then?

    I guess I may want to wait until the next generation of nVidia cards comes out before upgrading my graphics. This is what I am currently using:

    XFX nForce 680i SLI motherboard
    Intel Core2Quad Q6600 @ 3.0GHz (liquid cooled)
    XFX nVidia 8800 GTS 640MB
    4GB Corsair XMS2 DDR2 RAM
    Western Digital 7,200 RPM 1TB and 1.5TB hard drives
    BFG 650 watt power supply with 2x6-pin PCI-E connectors

    Maybe things have changed with ATI quality control since I last used them. I know they make the faster card now but I just have that bad aftertaste from my last experience with them.

    If nothing else I could do the motherboard+processor now and keep using my 8800 for a little longer until we see what nVidia's going to have next. I've never really felt like my Q6600 made full use of the power of that card to begin with.
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