Woah I didn't even see SIX CORE PROCESSOR good lord DDay I do not think you are exactly thinking about my needs within my budget here (are quad cores even a standard thing yet???)
DDay sometimes you have to consider a woman's needs.......
Let me explain this better to you since yesterday I was tired.
Video editing, photo shop and even 3D rendering relies on more Processor Power more then anything else so if you would like something that dose all these things then a good Processor is a must. and ram goes hand to hand with this since the processor sends information to and thru the ram
As for play back of videos (witch is probably your card) and also gaming relies more on the video card. (I know you don't want this but your in luck most NVIDIA cards geared towards editing then playing games but since I'm recemanding you something newer it can also play newer games it's just one of the draw backs not like I'm aiming for it) But I can go cheaper but I would still like to give you a
Fermi Card but my cheaper option has mixed reviews normally on the cheapness it was made.
Yes six core is a bit over kill but AMD have them on the cheep but Intel on the other hand doesn't and also to answer your question I would say 4 core is the standard now a day since it's last gen technology so it's cheaper then it was.
I'll re-post my Revised list in a bit.CPU$208.99
My Thoughts:A cheep 4 core at least to Intel standers and I didn't read the reviews till now and saw it doesn't support tir channel ram but I was in luck and found a quad channel ram set at cheaper price about 20$ less and 2 more GB of ram.
Mother Board$129.99
My Thoughts: The mother board is compatible with the Processor
Video$129.99
My Thoughts:I tried to find a cheaper card that had Firmi and it's not as powerful then the other one I suggested but it will do and meat your needs... I hope.
Ram $149.99
My Thoughts: CPU said it all I was only aiming for 6 GB of ram but found out that it won't work so I was reduced to going quad or duo ram set up but found a deal for 4 sticks of ram for 20$ cheaper then Tri ram set I originally planed so it was a no brainier
PSU$109.99
My Thoughts:750W is a good amount of power and made by a reliable company. My reasoning for getting a 750W I don't know what the video card will take at full loads I hear all firmi cards takes a lot but 750W should be able to handle it and should have enough pins to do the job.
To get everything it will come to $725.95 without tax and shipping.