pc spec's for FSX & PMDG

Hi, I just want to say, I got FSX for xmas last year (2008) to which I installed the PMDG 747 (I had it in cold storage for about 12 months!)my pc spec's were as follows; HP notebook vista ultimate intel core 2 T7200 2 GHz 1gig ram, 256meg geforce Go 7600, 64 bit. When I ran fsx for first time with pmdg it was a dog, basically un-flyable unless you set everything to the minimal settings. I then upgrade my ram to 2gig. boy what a difference, I set everything up to the highest setting on fsx and the queen flew fine. I set the target frame rates as high as 80 she flew just fine. The only other thing I did to vista but didn't mention was that I set the os to run for best performance in computer properties. However I had this set when I had 1gig also.so now I'm quite happy with fsx!btw When I tried FS9 with the new ram it ran perfectly very smooth.just my 2 cents :( Michael Pereira