Origin Millennium X99
Origin builds some of the best computers out there, but in this instance it just might be more machine and more options than you really need. If you like freedom and total customization, however, then take a good look at what Origin has to offer. This system comes with an Intel i7 six-core CPU standard, as well as 8GB of DDR4 memory. You get a 2GB NVIDIA GTX 950 graphics card in this computer which gives you a good amount of dedicated video memory in addition to a 500GB hard drive.
With this pick, the thing to really keep in mind is that Origin gives you a ton of options for upgrades and customizing the components. If you want a pre-built desktop with four 12GB NVIDIA GTX Titan X video cards and five hard drives in a hot-swap cage, then Origin can make that happen for you. For some people, this type of customization is probably unnecessary, but if it's something you want, then give this desktop a good look.