Best Intel 4790k + 980ti Z97 Build versus current part build

As far as RAM, it's hard to go wrong, the slowest crappiest weakest RAM in the world that will be compatible with a Z97 board is only a few % difference in games from the worlds fastest most bestest RAM in the world. It's all pretty much guaranteed for the life of the computer, and likely will outlive the rest of it. That being said, get something with a low CL rating, for example you've decided on 2133, see if you can find a CL9 or 10 set, that being compared to the amount of RAM you get. I have a 16Gb (2X8Gb) kit that is 2133 and CL10, and that is decently fast, with a decently high bandwidth. And at the time it wasn't priced too differently from 1600 CL9 RAM. CL is the relative speed, or how snappy it is, the 1333 - 2800 or whatnot is the bandwidth, relatively. They are both guidelines as many other factors come into play with RAM, but like I said, it makes very little impact on overall performance.

As far as the motherboard, I have an Asus Z97 Sabertooth, and I am *very* pleased with it. It doesn't have all the bells and whistles, but it is rock solid. This is my third Asus board, and while I can't easily recommend their budget boards, the rest of their lineup is awesome, and customer service has always been great to me. Asrock, not so much, they seem to get great reviews when new, but don't seem to last very long, take that with a grain of salt, no one reports when their board runs like it should, they only post when there are problems, and with the high volume of Asrock, they might actually be very reliable, I didn't like mine and had a bad time with CS. Gigabyte has good boards from what I've gathered, and in my experience, their customer service is pretty good. What you should do is decide which features you're going to use ona daily basis, and which ones are just nice to have, and get something that fits your needs, not your wants. You can always upgrade later, well, not always, but you know what I'm talking about. When I bought mine, the M.2 SSDs available were just as fast as the SATA ones I all ready had and more expensive, that's changed a lot, so that M.2 slot would be something I would want, but if you don't want to drop the dough on a drive, or don't have a drive all ready, that might not be something you should look for.

There are no glaring bottlenecks in your setup. You might want a little beefier cooler for your CPU, 4790Ks can get hot when overclocked, and hey, that's what the K is for. Noctua, Phanteks and others make dual tower coolers that run 10 - 20 $ more than what you have listed, but should perform better/quieter.

The CPU I think is only good til 1600 or maybe 1866, faster than that, it's technically overclocked, even though that's what the RAM is rated to run at. You'll be fine, it will put a little more strain on the CPUs memory controller, but that's about it, and as long as you have some kind of cooling, your CPU will be fine with it. I have the 4790K W/2133 CL10 16Gb RAM, Asus Sabertooth, and it runs fine, just set it to XMP profile and done. No worries. That RAM that you have linked will work nicely.