This is how my understanding goes. The HDD is not fast enough to deliver information that will be processed as fast as the processor can go, therefore making the system only as fast as the HDD delivers the information making the HDD the slowest component in the computer (bottleneck). The SSD makes the delivery fast enough to make the processor process the information at its full potential, making the system run faster. Correct me if I am wrong. If this is true, then an upgrade to the processor wouldn't make a difference since the HDD is still slow enough to provide the information. Yet why is it faster?