Hey, what processor do you want to use? And what are you going to do? Gaming or Multimedia? Post here and i will help you.
Check this link good price computer hardware for AMD product. AMD will provide better price/performance for you.
http://www.ucc-bd.com/
For 14,000 BDT, you can get phenom II x4 955 quad-core + motherboard. It will be great.