Used only a new SSD (Solid state Disk) and new 2 X 4 GB Ram sticks to make my old pc far more better.
The memory modules are a very easy upgrade and the on;y thing needed is to replace the old one's ore add if you have more ram slotes availiable. The Me Sticks i used ar DDR3 1333 4GB each
Link to the manufacturer: https://www.corsair.com/eu/en/Categories/Products/Memory/Mainstream-Memory/CORSAIR-Memory-%E2%80%94-4GB-DDR3-Memory/p/CMV4GX3M1A1333C9#tab-tech-specs
For the SSD it is obvious that you must clean install the operating system. In my case Windows 10 Pro. The Comuter boots in about 3-5 seconds ! and software like photoshope, adobe premiere will open up realy faster than installed in my old HDD.
My SSD is the Forza Neo ZION NFS01 2.5″ SSD
Link to the manufacturer:
https://www.neoforza.com/product/2-5-ssd/?lang=en
Same hardware before this upgrade with Windows 7 could not play 4K video files. Now they open really fast !!!