I have ordered online for a Sapphire 6670 DDR3 for 4900 INR, through COD system . But nowam confused whether to take it or not. It is today I understand that the Sapphire 6670 DDR3 released in 2011 ! Also 2 gb Sapphire 6670 DDR3 costs only 5100 INR . More than that DDR5 Sapphire 6670 costs 5600 rpz ! Am really confused !! My system in core 2 duo 2.93 Ghz, 4gb RAm, 400 W psu . Also please give me links of online stores in India