This cannot be intelligently answered. There are lots of reasons why this might be. Different machines have different amounts of RAM, different ways they connect to necessary drives. Worse, you have not even given us a hint as to the actual code! The crystal ball is so cloudy.
So YOU need to spend some time with the profiler tool on this code. Run it on both machines to test your code. See where the bottleneck is. Then look at the code. What is taking the time? Why is it taking time?
