Branded PC under 30K

branded: *configure.ap.dell.com/dellstore/config.aspx?c=in&cs=indhs1&kc=&l=en&oc=S241003IN8&s=dhs

assembled:

AMD Athlon X4 630: 5.5k
Gigabyte GA-MA785GM-US2H: 5.5k or Gigabyte GA-MA78GM-US2H: 4.2k-4.5k
Transcend 133MHz DDR3 2x2GB : 4.5k-5.5k or Corsair XMS2 DDR2 800MHz 2x2GB: 3k
Samsung 2233SW: 9.3k
Cooler Master ExtremePower 500W: 2.5k
Cooler Master Elite 330: 2k or zebronics bijli: 1.5k (without PSU)
Western Digital Blue 1Tb HDD: 4.5k or 500Gb: 2.7k
Samsung DVD writer: 1.1k
Logitech k/b and mouse: 750 rupees
APC 800VA UPS
Altec Lansing VS4121 2.1 speakers

^+1 to the assembled DDR3 combo. @ OP Don't go for branded PC if you can. Assembled will be cheaper and also you have the freedom to explore the cabinet and all the hardware.

^^branded speakers???

Lol @ me... I meant branded PC, edited the post.

+1 for the config suggested by @desiibond. Also check out the Cooler Master Elite 335 cabinet with the PSU. This combo comes with a 400W PSU that supplies 20A on the 12V rail and also has PCI-E connector for Graphics card. That is a bonus. Besides all this you get warranties for each component separately when you assemble and that helps.