Any recommendations for a video card

What would be a good video card for working with adobe premiere? I dont want to spend top dollar but just something thats a good bang for buck and worthwhile to add

My computer specs are as follows
cpu i5-4570
ram 8g
450w power supply
mobo asus....

Read this: http://www.studio1prod​uctions.com/Articles/P​remiereCS5.htm

Depending on what version of Premier your using, you may, or may not, need a CUDA enabled card, or to run a small hack to tell Premier to use a consumer level card.

The important thing is you don't need a super fast card, a mid range gaming card is quite capable.

I would also point out, that 450W PSU may become quite a limiting factor. What Manufacturer is it from? And what is it's efficiency rating? (80+ Bronze/Silve/Gold etc)

The harder a component works, the more power it draws. Rendering video is a pretty resource intensive task, and working your CPU, RAM, GPU, Drives etc at that level may cause you to end up drawing more power than your PSU can actually provide, depending on the GPU you purchase.

With the PSU you currently have, an nVidia GTX660 Ti (or AMD equivalent) is about as much as I would recommend. There are chunkier cards out there, but they would require a PSU upgrade as well to ensure that everything runs smoothly.