The IC's used in the series of ram kits mentioned above are what differentiates them. The Vengeance series is more of a Gamer'esk budget series of ram kits(is flashy and appeals to that audience). The Dominators are often times made with IC's that are binned and a have stricter QC method on their assembly lines. Dominators also tend to be a little more friendly when it comes to overclocking/tightening their timings.
Both will be fine, FYI, if you're looking for run of the mill kind of workloads. Dominators are higher quality and will look more well suited in a sort of a higher end build. Sigh, I said that didn't I? As it stands none of those components are cheap.
Thank you for your knowledge and info on this. I'm not big on overclocking my ram, but I do enable the XMP profile and I do expect to run it at the advertised speed. So in this case will the vengeance 6400 still be a bit more finicky to run its XMP profile in comparison to the Dominator? If I am honest, I almost like the lighting on the vengeance better. However the dops on the dominator do have a Starwars like feel which is also cool.
I did see the 6200 vs. the 6400 has about 2-5 fps difference. Not noticeable in a real world game with high end hardware. So now it comes down to what will be a more durable stick always running at its full XMP profile for the life of the ram?
Also, in 4 years from now, what will be easiest to still find to upgrade to 64GB grabbing up two more sticks?
So with that said, which one should I get knowing that I'm not interested in OCing the ram to its top speeds above advertised?
In other words, is it worth spending $40 more for a ever so slightly slower ram?
Is that $40 worth the dominator over the faster vengeance?