When you really need to shoot and edit video professionally, it pays to have new, up-to-date equipment in post-production. Below is my 2017 build list for a mid budget price that will crush some pre-built systems that cost significantly more.
This build would get you into the newest consumer-grade architecture Intel 6700K chip, with a 512GB M.2 SSD for operating system, 64GB of DDR4 RAM, a new GTX1080 8GB GPU, a 1000 watt PSU to power everything, and liquid CPU cooling. On top of that, you get a very sleek, slient tower. For file storage you get a total of 25TB. That’s 12TB in RAID-0 (read/write around 500MB/sec) for primary media files, 12TB of incremental backup space, and two 512GB SSDs, one for dedicated preview/cache/paging files and the other as a dedicated render drive. For a total of just under $4k, this price is the same as some workstaions with just a single drive (MacPro, HP Z, etc).
CPU: 4.00Ghz Skylake Core i7 6700K
Motherboard: Z170 Sabertooth w/ 8 SATA Ports
OS Drive: Samsung 950 M.2 Internal 512GB SSD
GPU: Gigabyte GeForce GTX1080 w/ 8GB VRAM
Memory: 64GB G.Skill DDR4 RAM
Cooling: Corsair H100i Liquid CPU Cooling
Power Supply: Corsair RM1000 PSU
Case: Antec P280 Silent Case
Media / Additional Storage: $1,250
1x Samsung Evo 512GB SSD (For preview / cache / page file)
1x Samsung Evo 512GB SSD (Render Drive)
4x WD Red 3TB HDDs in RAID-0 (12TB RAID Array)
2x 6TB WD Red in Disk Pool (Backup)
Total Cost: $3750 without OS.