Uncertain which GPU is better

Sep 10, 2014
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My job is going to require me to travel a lot around the country/world, so I need a laptop that can play games when everything gets slow. Price doesn't really matter (I'm aiming for it to be lower than $3700, and I don't want useless things like 2 ssd's in raid, $100 keyboard, etc.) but I'm split between two.

There's one that is a desktop 980, which seems like a solid choice all considering that it's a desktop 980. However, SLI 980m's are also in my price range. I tried looking up which would be the better gaming experience, but to no avail. So I ask you: which gives better performance? Is the extra cost/trouble of an SLI worth it over the desktop 980?