if it's HD video you will need some lare HDDs as well, you should be good with 16GB of RAM and a high end CPU something like a  i7-3770 or i7-3930. If you want to do GPU acceleration Premier doesn't take advantage of anything above a 660 Ti at the moment unless you get a quadro card which is way over priced for the performance. 

Yeah, I took a look at the pricing on Quadro cards. They are a bit too hot.

don't get dual gtx imo, SLI causes issues with random things. Can cause heat problems. it's better to just get 1 better card in almost all situations. Unless you already have a single card. Or You're going crazy and getting 2 top top top end cards.

I don't do video editing. But I do cad drawing with solidworks, catia etc. So I have a system with a quadro and one with nvidia gtx 660ti.

The issue is, the performance on the GTX's are much better for the price, There are like quadro's from 100-6000$ or more. The ones at the ultra-high price range are better, however that's out of your range. If I remember correctly Quadro's are better supported by the like say solidworks catia. And the geforce drivers are buggier, less optimized.

Since it's a home system and not a professional system (I'm get contracts for SW projects) and you're using adobe premier which is widely used. I don't imagine you running into driver issues, glitches. That you won't be able to get around if you even get any.

Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I53570K

What is Intel HD Graphics 4000 and do I need it?

it's a GPU that is included in the CPU you will have it whether you need it or not lol.

yeah. I dig around and it seems like it's useless if you're getting a graphics card.

Speaking of graphics cards, which one of these are a good choice?

http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007709%20600286742%20600030348%20600007797%20600286741&IsNodeId=1&bop=And&CompareItemList=48|14-125-450^14-125-450-TS%2C14-130-817^14-130-817-TS%2C14-130-811^14-130-811-TS%2C14-130-812^14-130-812-TS%2C14-162-119^14-162-119-TS

I haven't shopped for computer parts so long, all these new features is quite confounding.

I didn't go for 4GB since that's a big price jump.

Also, going for 256bit also another price jump. a 2GB with 256big cost more htan 3GB with 192bit. I assume 3GB/192bit is faster than 2GB/256bit?

I'll probably end up ordering all parts from newegg, easier to just buy from one source.

Any of those would be fine, but if you are not going to be gaming on the PC it might be worth just skiping it and investing everything in the CPU etc.

I don't need a good GPU for video processing?

I do a lot of editing in Pinnacle studio ultimate with 24mbps h.264 1080p source video.

Quad core or better is a must. I use an I7 and all 8 threads are constantly busy. Memory is not that important, it's busy encoding a 15mbps 1080p wmv atm and only has 2.5gb in use.

The bottleneck is disk access. Get separate HDDs, one for input, one for output. Best is to have the auxiliary data / intermediate files go onto an SSD.

And lots of storage space ofcourse, 16gb only gets you 88 minutes of 24mbps video, and those programs like to duplicate stuff a lot when you start adding effects. My 1tb work disk is full.

So, it's better to burn the cash on i7 and cut back on the GPU?

And some HDD investment, too.

http://www.hardocp.com/article/2012/08/16/galaxy_geforce_gtx_660_ti_gc_3gb_video_card_review/1

Answering my own question about the 3GB/192bit. It's nearly matching up with 2GB/256bit from the benchmark above.