Purchased this Dell XPS 8950 desktop as an upgrade to 3 year old Dell XPS 8930. They have the same amount of RAM (16GB). This new XPS 8950 is so slow compared to 3 year old Dell XPS 8930. Opening file, opening software is at least 50% to 80% slower than the 3 year old XPS 8930.

What is wrong with the Dell XPS 8950?