I want to upgrade ram of my laptop. I have Lenovo Y510 with intel dual core T2330 1.6 ghz processor 533mhz FSB. For better performance I want to upgrade ram. I opened up my laptop and saw ram but frequency was not mentioned there. I have attached here two images one of boot screen of my machine and second is of ram. Looking at both can you please tell me what is the frequency or ram I should go with for upgradation. I think ram is of 667mhz but not sure.