^you want to buy ONE computer or five?..Do you need monitor? And dont go for AMD for gaming at the moment. And for 1 lakh go for core i7
1.core i7 920--15k
2.Transcend 3GB DDR3--8k
3.Gigabyte GA-x58-UD5--17k
4.Palit HD4850x2--23k
5.Dell SP2208WFP--17k
6.Tagan BZ700--7k (80% efficiency)
7.DVD writer--1.5k
8.segate 500GB HDD(32mb buffer)--3.5k
Tota--92k
Spend the remaining 8k on decent speakers and k/b and mouse.