Need advice on $900 budget for a 3D modeling PC

cicil

Honorable
May 29, 2013
1
0
10,510
Approximate Purchase Date:
June 2013

Budget Range:
less than $900 excluding monitor. I hope the price is as low as possible.

System Usage from Most to Least Important:
Using professional 3D modelling software to design facilities, rendering, simulating construction process, etc.

Parts Not Required:
monitor

Preferred Website(s) for Parts:
I have no experience and have no idea where can I buy parts.

Country:
USA

Parts Preferences:
I think I need a fast processor and graphics card.

Overclocking:
don't know if I need to do it.

SLI or Crossfire:
don't know if I need to do it.

Monitor Resolution:
I have a monitor already.

Additional Comments:
Please advice me what parts I need, which model I need, normal price, and where to buy them.
Also, I haven't used desktop for a long time. Not sure if assembling the parts are as easy as before. About 10 years ago, I was told all slots were identical so I wouldn't plug a part in a wrong slot, when I added an extra hard drive, sound card, etc. to my old desktop.

Appreciate any advice I can get.