Editing / gaming rig

Definitely don't go with the RM850. It's overpriced and poor quality for the stress you're going to be putting it under.

As for overkill, using it with a 1440p monitor won't need 6GB of VRAM. You can save your money and get the regular 780.

And be sure to get the Pro version of Windows, though I'm not 100% positive that Win8 is like Win7 and won't let you use over 16GB of RAM with the regular version.

Rest looks good

Very jealous, as that's for most part what im waiting to upgrade to. With aftereffects and a few other editing programs, the term 'scratch disk', is where all the preview/temporary files are stored, best if used on its own ssd but will thrash it quick as it writes a lot. I found best thing to do is get 32gb ram, use 12gb for system, and then use 20gb for a ram disk which I use as a scratch disk. Phenominal speeds.

As for gigabyte board, it would allow dual or tri sli with double cards, but its a tri slot card, it'll hold two depending on case (which your should be fine).

HHD, id swap to WD black. A little more pricey, but I've had over 5 rma on Seagate 3tb drives in last 16 months, lost everything (3x3tb drives, have had multiple issues).

As for windows, it really doesn't matter. But coming from somebody who does a fresh install at least every 6 months, it'd be worth $10-15 more (to me) to get 8.1 right off the bat. Updating isn't bad, but its like 150 updates, then update to 8.1, then like another 100 updates. That's to get from a windows 8 install to current date 8.1. Now lastweeks windows 8.1 instal, like 40 updates, that's it. Took less than 20 min. I imagine its only going to get worse for both the longer we get away from the launch of either 8 or 8.1.

The card you picked, depending on price, the titan black should be a few $100 more, and is well worth the added cost.

Other than that, I would personally go with asus deluxe mobo, or asus rampage black vi ($550). Id get corsair dominator pro 2133 32/64gb ram, and an evga psu. Might as well add evga titan black. But other than that, your build is exactly what I will be getting in just a few months. Minor changes I mentioned like hhd switch to WD, and possibly (depending on budget) going titan black, and doubling your ram for ram disk. Those are just budget depending things that you could change to get more performance. The brands and such are just my personal preference.

But great build.

Oh, I wasn't saying for you to go dominator pro ram. I mentioned that was what I was going for, i'd recommend for you yes to just double your ram. Scratch disk on ram disk, is click apply and done, vs on a separate ssd its click apply 2-4 second pause and done, vs hhd is click apply and a good 10 second pause before its done. That's just adding little stuff or anything, not creating or rendering, just the preview. Its really night and day and makes things so much nicer.

As for ram, the 1866 will have a slight noticeable edge over the 1600, but unless budget not issue, you'd be better off spending the money on 32gb ram vs 16gb faster. I'm going 2133 as it overclocks like a champ, and I make money with my build. Also why I replaced 16gb ram on laptop with 32gb gskill 1866 ram.

As for hhd, the wd black is more, but it will last and give great performance for an hhd. I'm sad im stuck with seagates, I use them internal raid bay in my pc case. I use wd blacks for my raid/nas build. I'll never go anything else from now on.

The 780 is still a great card, especially the 6gb. And again budget wise, for the same price you could just about get 3 780 6gb cards for 2 titan blacks. So that would be better, just doesn't fit my case now, otherwise that would probably be my way as well.

I use maya, blender, autocad, solidworks for work. Adobe cs6 and sony vegas for personal and side business video/photo editing. Just dabbing into 4k video now (just finally bought a 4k camcorder), and my sli 770 are not enough. For 4k ive found, that less than adequate hardware, instead of just taking longer to render the bitrate isn't high enough and the final video fps actually fluctuate from 10-45 fps. Makes for a crap video. But im also addicted to borderlands 2 and titanfall so I cant go all out professional class card.

EVGA SuperNOVA NEX 750 G 80 PLUS GOLD $89.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438027&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

That one cutting it close but should be enough.

Otherwise to make sure it has enough power, for now and ever plus 10 year warranty
EVGA SuperNOVA 1300 G2 80 PLUS GOLD Certified 1300W $159
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438011&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

Yup sorry.

The scratch disk, is a temporary area that some editing programs use to store temporary files. Such as edits or effects applied before you actually render/produce it.

The scratch disk is best used (you set the location for it to be used) on a ssd, as it gives good speed.

But its best used on ram, since ram is idk just blazing fast compared to a ssd.

Now, when I started video editing, I tried rendering every single way I could think of, to find the best way/fastest way. Reading from ssd writing to same ssd, reading from hhd writing to ssd, reading from hhd writing to hhd, reading from ssd writing to separate ssd, ect. Then tried a few graphics cards, and a few settings. Got that down pat. Hence the raid/nas server now. But upon just doing quick things little edits, adding an effect, it all seemed to take way to long. I had 2x256gb ssd's in raid. But after going to editing forums, found out about this scratch disk.

So I ran some tests to figure out the differences in this. I found adding an effect to a movie or layer to a photo. Scratch disk on hhd took about 10 seconds. 10 seconds from the time I hit apply layer/effect until the spinning circle was done and I could move on. Put it on a ssd, and really sped it up, but it still paused (little circle going) for a few seconds before I could move on. But then put it on my ram disk, and just nothing. Clicked apply layer, ready to go, clicked apply effect, and ready to go. Just smooth.

Don't get me wrong, the ssd was still good. But it was still a few seconds, and when your trying several effects to see which works best, its a few seconds in between every click. Plus, this is writing a lot of temporary data. And the endourance of ssd's is good, but is limited by the amount of data written.

Its recommended that you get a ssd just for scratch disk, that way it burns up only that one. Just get something small like 32-64gb and use it just for that. Well that's still like $40-50. Rams cheap, and really fast. So I just used that.

So since then, I just make sure I let people know what I took so long to find out/ figure out/ and save them the trouble, and save some time.

Its program specific. But in vegas, you just go to settings, then under editing you'll see area for temp files, click that, then as you would select c:/ or d:/, you select whatever drive you labeled your ram disk. Mine is z:/.

You will need a program to make and maintain your ramdisk. I found asus is way to go, think the program was like $10-20 and goes up to 24gb. Then its more or less $ depending if you want more or less size drive.