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3-Way SLI Questions

  • Nvidia
  • Power Supplies
  • SLI
  • Motherboards
  • Graphics
Last response: in Graphics Cards
June 5, 2008 4:06:00 AM

Hi, I am currently building a PC, I was maybe thinking of going for 3-way SLI seeing as how the EVGA 780i Motherboard I am getting supports it.

I was just wondering if anyone has tried it with 3x 9800GTX's?
What is the lowest Power Supply I can go for and are there any other requirements over the normal 2-way SLI?

Is there a big advantage to 3-way SLI?

Thank you in advance for you comments and help!

More about : sli questions

June 5, 2008 4:11:37 AM

2 word!LEAVE IT.

2 way SLI is struggle to scale and some game SLi actually make the game run slower.and 3 way will be waste of money and be power hungry as well.if 3 way sli you will need to get a 1000w PSU as well.MULTI GPU solution doesnt work like CPU.more core doesnt mean more fps.if you want the best scalable should get the 9600GT SLI or HD3870 CF or maybe you just want one card then go for the 9800GX2 or HD3870X2.

any other SLi or CF solution is not worth considering.
June 5, 2008 4:38:52 AM

3-way SLI is a new technology.
It's raw and, just not worth it.
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June 5, 2008 5:01:10 AM

Although I have seen benchmarks using 2 EVGA 9800GTX in SLI and they outperformed a 9800GTXx2 by 5 FPS in Crysis all maxed out. So would you all suggest I just stick with 2-Way SLI?
June 5, 2008 5:04:13 AM

Yep! Buy 3 cards, and the performance, well, not up to the price you paid.
June 5, 2008 6:57:21 AM

lol, 3 way sli, u have to spend extra on power, MB, case, cooling, 3 500-600 GPU, fast cpu to not bottleneck it, raid drives to increase i/o performance, good memory. plus, u need a high resolution monitor, probably a 2560 * 1600 one since 1920*1200 is a waste for even regular sli with todays 8800, 9600, 9800 series gpus. its simply not worth it unless u truly have money to waste. it will also be a power hog. not to mention how fast technology changes, ur beast of a machine wont be the top dog for long, after a while, a cheap sli setup will beat it, then 1, then integrated graphics. im kidding about the last one. u get the idea.
June 5, 2008 7:14:18 AM

@ iluvgillgi: Sidenote: is your space bar broken?
June 5, 2008 12:45:20 PM

no my S P A C E B A R is working fine?i dont quite get your "joke" aziraphale.
June 5, 2008 1:18:21 PM

I have a 3-way SLI setup with 9800GTX. I bench basically the same with 2 cards as I do three. The third card gets me another 1000 pts in 3Dmark06. But for 3 9800gtx you are required to run Vista.

It is said you bench better with 2 9800GTX in XP than 3 cards in Vista. I have noticed this as well.

The third is not worth it unless you are a overclocking and benchmarking type dude. Even than you would be better off with two cards and Tek9's and an Dragonforce F1. I am just getting into phase cooling myself though, my current benches are all on air.

You also need at least a 4.0Ghz Intel chip to see the slightest potential from the 3 card setup.

Here is my rig:
June 5, 2008 6:05:03 PM

you will see more performance gain per card would be the card will beat it in scalability.

because current driver and game support.more then 2 graphics card wont see much of a fps gain apart from BIOSHOCK and 2 other i cant remember off my head.
June 5, 2008 11:05:39 PM

Anyways 4870 in CF mighty most probably castrate 3 way 9800GTsuX.
June 6, 2008 2:08:44 AM

Those are two very different cards though, and that cannot be said as of yet! Let's not speculate on the prowess of the new GPU's... When has something ever been spectacular in the world of computers??
June 6, 2008 2:58:06 AM

I think if you want to spend that much on Graphics sub system go with two of the new nvidia cards.
June 6, 2008 6:35:52 AM

godspeed7 said:
Those are two very different cards though, and that cannot be said as of yet! Let's not speculate on the prowess of the new GPU's... When has something ever been spectacular in the world of computers??

Which world do you live in? Or are you just too hard to please?
June 6, 2008 9:43:06 PM

What I mean is that everyone always expects a VERY big jump in performance, but when has that ever happened? I'm not saying I am very hard to please... or am I? ;) 

I just want to have a good gaming system that will last me the year or two at most...