Thanks Rob,and all others.
I ended up ordering a new one that has third generation i7(four cores) and 2GB dedicated Nvida graphics card and has 3 3.0 USB ports and some 2.0 USB ports.It has 6GB of RAM,I felt that was a bit odd-it was 4 and 2,so will be able to take 2 out and replace with another 4-although I am only a basic users-not sure if I'll need that extra,It should be a bit quicker than my 4 1/2 year old Toshy Tecra A9 centrino laptop.
So hopefully,I'll be able to use this new lappy for astro imaging very soon.
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