Recently bought Dell optilex 3000 small form factor- You can go with Penitium gold 7400 - 8gb ddr4 - 1 TB 7200 rpm - Optional keyboard and mouse . No OS - less than 35k ( 5 year warranty for 1700 rupees.) You can get printer canon g3000 tank printer for 999(there is offer going whole month of march) .Comes with 24 month no cost emi also (me went for 1 year ).

I had spare amd 550 radeon 2gb graphics for dual monitor setup.

My dad using with dual monitor setup with my old 2* p2219h monitors.

Penitium processor 7400 vs 10100f - I am not sure about performance. I like this -it runs like 8 hours.

Only drawback you are forced to buy dell optilex psu.