TheMeta14 :
Can someone send me a sli/crossfire build under 1k
First, may I ask why is it so important that it be crossfire or sli? Because if xfire or sli is what you're going for, you're probably talking about going over $1,000 if you're wanting any modicum of quality, most especially if you are trying to include a new monitor and operating system as well. Do you already have a monitor, if so, what type? 1080p/60fps? 1080p/144fps, 1440p/144fps, etc? If you're going for a 1080p/60fps setup, you don't really need xfire or sli, honestly. A single 480 or 1060 is good enough in most cases. Anything above that, sure, then maybe a 2 card build would be preferable. Remember, if you can do with a single card setup, that is definitely the desirable solution most of the time, as both xfire and sli may potentially cause problems in some games, especially if its just after the game's release.
A dual RX 480 build may be possible if you waited for black friday, or waited for sales on the components needed. Two of the better aftermarket RX 480's will run you a bit over $500, there's half of the budget. You could also get a gtx 1070 for between ~ $385-$400+, depending on choice, unless you find a sale. So... add a cpu, mobo, ram, ssd and hd, psu, case, etc, and chances are you'll end up going over that $1k mark if you're buying new. If you wait on sales, or check used offerings on ebay, then you may very well be able to save a lot. A decent I-5 6600k, 480 xfire build will cost you around $1200 or more/less, depending on your choices and depending on whether you already have a monitor and os or not.
Check out pcpartpicker and familiarize yourself with it, and also, check out some of the existing builds there as well as Tom's and other sites. I started to come up with a build for u via pcpartpicker, using an I5 6500k, and dual 480's, 16Gb ram, 500Gb samsung evo ssd, etc, but it'd have been difficult to not go over a grand without compromising overall quality. Even then I'm not so sure.