Depends on what's causing the slowness. Did you analyze the bottlenecks before upgrading?
For example, more RAM only makes it faster when a lot of processes are running and there's a lot of context switching between those processes. If that's not applcable, you won't see any difference. A larger disk doesn't make any difference at all. A faster CPU should show a difference in benchmark for CPU intensive tasks.
I have the HP Compaq 6305-SFF desktop..
I just upgraded my processor from an a4 2.0ghz to the a10-5700 at about 3.5ghz. I doubled my ram from 8 to 16 and put in a 2TB refurbished harddrive.
64 bit OS windows 10 professional..
Why does my pc seem slower now than before?!?!