Acer are considered low quality, and eMachines are their 'budget' range basically. I wouldn't recommend especially when you are throwing that much money around. Are you buying a prebuilt then adding a GPU? Doesn't make much sense to me, your PSU and mobo will not work very well.
You shouldn't use 12gb of RAM either, most mobos have 4 slots which means you should use 4/8/16/32gb of RAM. The more the better, so it depends on your budget.
6th gen Core i7s are coming out this year so if you chill you can get something much better than you otherwise would be able to get. At the moment it looks like 2h this year, perhaps 3q even.
Finally the titan z is outperformed by the x, and generally the x is cheaper too. I really wouldn't recommend the z!
How much money are you looking to spend? Looks like you have a lot to throw around.
I'm guessing you are going to burn about $2k, so in that case something like;
Titan X, i7-5820k, gigabyte x99-ud4, 16gb ddr4.
Plus your choice of HSF, case, SSD/HDD and PSU. NH-D15 is a popular HSF, for PSU anything that is
top tier and has maybe 800W (didn't actually check, it's probably closer to 600W so once you decide on the rest of the components you should check your power usage). For SSD you want to fit your OS on it at least, but if you want to fit other things on it then it needs to be bigger obviously, 1TB SSDs run around $400 so they are quite affordable in a high end build.
The two current best case designers IMO are
fractal and
Lian Li.
You could also consider stuff like water cooling, extra fans, dust filters, LEDs if you like rice...
Example parts list:
http://pcpartpicker.com/p/qxfMdC
Could be easily toned down and optimized by reducing CPU, GPU, PSU, Mobo, etc.
I picked case and SSD arbitrarily just to fill out slots.
^
If you were to build something like this from Alienware it would cost maybe $1000 more. And all you get are some flashy LEDs... Steer away from prebuilts if you want bang for your buck.
ASUS has quality control and support problems, but they aren't terrible...
AOC I don't know much about, but they seem to be low end and the products they make use somewhat inferior technology. I don't know who makes their panels but it looks like they are all low density and don't have the best timings or color reproduction. I'm not too confident in them but I don't know much about them just did a quick search. What exactly are you looking for in monitors?
About headphones;
http://installgentoo.wikia.com/wiki/Headphones
There's many guides out there, this one is rather comprehensive and even covers why Beats are bad.
Last edited by ImmortalPig; May 2, 2015 at 06:31 AM.