I'm looking to buy a custom built pc from one of the many custom build sites out there such as overclockers, cyberpower, pcspecialist, and currently my preference is cyberpower based on their prices. I live in the U.K and my budget is £900-£1000 and I would mainly use it for daily video editing and rendering (on Sony Vegas 12) and casual gaming on mostly single-player games (since my broadband sucks). I currently know that I need at least the i7 4770 and 1600mhz 16gb ram for editing but I am stuck with what graphics card, solid state drive, case, PSU, and motherboard to get? I have a 1920x1080 DVI monitor, mouse, speaker and keyboard so everything outside of the case is covered for now also I know a lot of you will suggest building it myself but in my current working situation I have no time to do so but this could change in the future.
This build is the best I could come up with my knowledge from cyberpower and with Windows 8.1 it is £65 over which is fine
CPU: Intel® Core™ i7-4770 Quad Core 3.40 GHz 8MB Cache LGA1150 + HD Graphics [+50]
HDD: 128 GB Plextor PX-M5P Series SATA III Gaming MLC Solid State Disk [+43] (Single Drive)
MEMORY: 16GB (2x8GB) DDR3/1600mhz Dual Channel Memory [+80] (Kingston HyperX Blu w/Heat Spreader)
MOTHERBOARD: GIGABYTE Z87-HD3 Intel Z87 Chipset, ATX Mainboard w/ 4 RAM slots, 7.1 HD Audio, HDMI, GbLAN, USB 3.0, SATA-III, 1x Gen2 PCIe x16, 1x Gen2 PCIe x4, 2x PCIe x 1 & 2x PCI
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
VIDEO: NVIDIA GeForce GTX 660 2GB 16X PCIe 3.0 Video Card [+99] (Major Brand Powered by NVIDIA)
CASE: CoolerMaster HAF 912 Mid-Tower Gaming Case
That mobo is a great one, try to go for a R9 270x which is better than the gtx 660, that´s a good case, I think that you already have a HDD, samsung is one of the best in ssd so if you can go with the 840 pro you´ll be fine.
Why not build it yourself? Not only will it be cheaper/perform better, but you'll also get a wide variety of components at your disposal to choose from compared to the very limited options at Cyberpowerpc. That way, you'll be able to get the parts that fit your needs perfectly.