Check out the components you need to build this kicka$$ PC
Memory
G Skill F3-10600CL7D-4GBPI DM (2x2GB) Price: Rs.5650
4GB of DDR3 RAM should perfectly compliment this motherboard, plus it comes with heat sinks to keep the temperature under check. The latency for this memory is 7-7-7-18 and runs at a low 1.5v, which means more headroom for overclocking.
Remember if you're going for the DDR2 board then make sure you buy DDR2 memory.