Make your ultimate PC!

[JEMC]

My ultimate PC would actually be two.

I'd go with a CaseLab case or something similar capable of housing two computers, an everyday PC and a gaming monster PC.

The everyday PC would be based on a Mini-ITX board, a low en Pentium processor with 4GB and a 500GB SSD for storage. The idea is to have a low power PC that can be left on while consuming next to nothing in power. And the best part is that it would be more than enough for almost anything but gaming (web surfing, email, some Office, video playback, etc.)

The Gaming monster would be an X99 based PC with an i7-5930K (no need for the higher end as this one has the same 40 PCI-E lanes and can overclock better), 64GB of fast RAM, an stupidly fast 512GB M.2 drive for OS and 4x1TB SSD in a double RAID setup (2 in RAID 0 and the other two in a RAID 1 mode for safety) and two 980Ti cards (again, because they overclock better than Titan X). And all of it would be cooled by a double loop (reservoir -> pump1 -> CPU -> 120mm Radiator -> pump2 -> GPUs -> 360mm Radiator -> reservoir).

With the help of a splitter, the same keyboard and mouse would be used for both PCs that would also drive the same display, a 34" 3440x1440 UltraWide monitor.