Graphics card 15-17k

Zotac GTX 560 Ti @ 13.5k(approx)

BTW, what PSU do you have?

I think for video footage editing and 3D rendering you should look for workstation class gfx cards like Firepro or Quadro. It will be better than a gaming GPU like geforce or radeon.

Yeah it won't be used for gaming. It will primarily be used for 3d rendering and footage editing. So suggest some cards keeping those objectives in front.

Please answer my question.
What PSU do you have?

I don't know about the prices but in mid-range search for Quadro 2000/2000D, Quadro FX 1800 (older model), FireGL 5600, FirePro 5700. These should be in your range.

is softmoding an option?

I don't think so. Google it.

PSU= corsair HX 620W

Mid-range workstation graphics cards are not as power hungry as their desktop counterparts. Your PSU is more than sufficient to handle them.