thanks for your replies,
just one more issue regarding RAM
I was reading this article about RAM http://www.tomshardware.com/news/corsair-triple-channel-ddr3,6614.html
and from where i read in other forums it appears that due to the i7 using triple channel memory, it is most effective when configured in multiples of 3 i.e 3GB, 6GB, 12GB etc
is this true? will 5GB be about similar as to 3GB when pitted against 6GB?
or am I confusing myself