Other than memory, the spec is better than my laptop. I have 1800 plus people in my tree, with just over 2000 media items. FTM is reporting the file size as 17,652 KB. It could be the file size that affects speed rather than number of people, but I don't know that for sure!
My laptop is a Win 7 64bit, i3-2350M processor running at 2.3 gHz with 8 GB of RAM. PC is showing as using 31% of RAM, and FTM is using 176,124K of memory. I find having iTunes open at the same time has an effect on speed. Closing FTM the memory drops to 28% so FTM is using 3% of my RAM.
My laptop is a Win 7 64bit, i3-2350M processor running at 2.3 gHz with 8 GB of RAM. PC is showing as using 31% of RAM, and FTM is using 176,124K of memory. I find having iTunes open at the same time has an effect on speed. Closing FTM the memory drops to 28% so FTM is using 3% of my RAM.