acrobat PDF reader eats up 32MB memory

Using task manager, I noticed that acrobat PDF reader consumed 32 MB of memory. This is a huge amount of memory resource. Besides eating up memory, I don't think acrobat PDF reader can give a good performance.

I have switched to use Foxit pdf reader. This software can load and open PDF document really fast and it only takes up 4 MB of memory, just 12.5 % of that of acrobat pdf reader. Of course, it is a freeware.

I regret that I only discover this great software so late.