I do a lot of After Effects animation/compositing, and am learning Cinema 4D (3d app). Potentially video editing down the road, but not right now. No gaming. I saw a number of people suggesting the i7-3930k, so I thought I'd go for that, but could only find it on an Alienware machine (from a brand/builder i'd heard of). I'm not too excited about the Megatron chassis look, but whatev.
Alienware Aurora Desktop (Dell)
Motherboard - (no idea/they don't say)
CPU - Intel® Core™ i7-3930K (Six Core, 12MB Cache, Overclocked up to 4.1Ghz)
RAM - 32GB Quad Channel DDR3 at 1600MHz
Graphics - 1.25GB GDDR5 NVIDIA® GeForce® GTX 560 Ti
Hard drive - 1TB Serial ATA 3 Hard Drive
Networking - 802.11n Wi-Fi and Bluetooth 2.1 EDR USB Combo Adapter
Optical drive - 24X CD/DVD burner (DVD+/-RW)
1 Year Basic Service Plan
Solid State Drive - OCZ 120GB Vertex 3 SATA 6GB/S - $115
Monitor - Dell UltraSharp U2312HM - 23" - $225
I could spend perhaps $500 or even $1k more if the performance payoff was to die for. I'm not doing a *ton* of work right now, but I'm trying to learn 3d, and that's a lot of turning of knobs and trial and error, and I'm tired of waiting 2 minutes for 1 frame to render.
I might buy this from Dell, but if everyone tells me i'm getting ripped off, I might risk it and pay a friend of a friend who apparently does custom builds.