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NVIDIA sli technology was introduced back in 2004 it allowed users to run two

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graphics cards simultaneously to theoretically double 3d gaming

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performance versus what could be achieved with a single card here we are

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10 years later the technology has changed a lot now we have professional

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grade sli for 3d rendering multi-way sli with support for three or even four

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graphics processors concurrently and a plethora of different operational modes

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but the misconceptions about it have stayed pretty much the same so first up

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sli only works with cards based on the same graphics processor and with the

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same amount of onboard memory you can run these two cards in sli mode because

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they are identical these ones will still

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work because they are both gtx 780s

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that's the GPU or graphics processor with three gigabytes of RAM that's the

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memory even though they are from different manufacturers you only start

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running into trouble when you want to pair up two gig cards with four gig

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cards or two gig cards with different gpus or mix NVIDIA cards with AMD cards

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etc so guys it's not gonna work so

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please stop trying beyond choosing the right cards setting up sli is pretty

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easy you'll need an sli ready operating system an sli certified motherboard with

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two pci express 16x slots an sli bridge

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and a power supply that can provide enough power for as many cards as you're

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running NVIDIA has guidelines for all this stuff linked in the video

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description or better yet you can get personalized advice by posting in the

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linustechtips.com forum all right so what are the benefits number one as i

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mentioned before is better performance especially at higher resolutions like

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2560x1440 and 4k number two is better

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graphical fidelity instead of running out 130 FPS when your monitor only

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displays 60 images per second you can crank up the settings for better image

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quality while maintaining an acceptable frame rate number three is it looks

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awesome for lots of folks the improved performance while very important is not

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the only reason they do it it's shallow but i know i'm not the only one who

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thinks this way well gosh that sounds perfect right sign me up we'll hold on a

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second it's not all rosy the law of diminishing returns comes down pretty

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hard on sli configurations two cards obviously costs twice as much as one but

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it's rare for that to actually completely double your performance in a

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real world scenario and even less common to see triple the performance with three

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cards you'll also see increased power consumption and heat output so you want

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to make sure your power supply is adequate your pc case ventilation is

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adequate and in some extreme cases your room ventilation is adequate game

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compatibility is much better than it used to be but there are still games

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that don't have any kind of sli support especially right at release so that

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second card might be sitting there doing nothing sometimes especially if you're

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one of those people who lines up at midnight to buy the latest games finally

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there's the issue of micro stuttering or frame time variants which some people

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are more or less susceptible to but NVIDIA has that mostly taken care of

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compared to the competition while that last bit probably sounded like i was

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pretty down on sli i'm not multi-card configurations are the only way to get

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truly next generation performance today and for gamers who want to play at very

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high resolutions with very high detail settings and always get butter smooth

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frame rates those trade-offs we talked about before are going to sound like no

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big deal hence the continued success of sli today almost 10 years after its

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