My suggestion, NO BARGAINS....
AMD Athlon 64 3000+ with A8V-MX ~ 7000/-
Hynix 512 ~ 2100
HDD 80 Gb ~ 2200
Cabinet INTEX pulsar ~ 600
PSU generic 400W(say iball) ~ 400
total ~ 12500
so u can get another ram or a better motherboard...
replace the motherboard with MSI RS480
512 ram
and it will be 15000 exact...
this will be equivalent or better to a P4 3.0 Ghz processor