zhihao50 is correct; almost all motherboards support RAID 0. I went with a different approach - I use several different hard disks to maximize I/O (one boot disk and 3 disks for the VMs).
Will you buy an i5 CPU that supports vt-d, e.g., i5 2500? Note that the K series processors don't.
Check the following motherboards (and others):
- BIOSTAR TH67+ The H67 chipset doesn't allow overclocking
- BIOSTAR TZ68A+RCH
- GIGABYTE GA-Z68M-D2H
You shouldn't need a video card if you buy a processor with Integrated Graphics and a motherboard that has D-Sub and/or DVI-D ports (the above motherboards do).
It's difficult to suggest desktop/gamer motherboards for a server and I don't know what motherboards are available in India. Read the reviews...