Yes, you can also install this SSD in your PC as long as it has an M.2 connector (Type-M) with support for the M.2 2280 form factor and PCIe 4.0. The SSD is optimised for PlayStation 5, but also works in compatible computers with Windows 10 or higher.
For the "Black SN850P with Heatsink for PS5" product, a heatsink is already included. This means you don't need to buy an extra one, as the product is designed to manage heat efficiently. However, if you're using your SSD in a poorly ventilated environment, it might be worth checking the airflow around your device to optimise performance.
No, you don't need an additional heatsink for this memory expansion. The WD Black SN850P for PS5 already comes with an optimised, integrated heatsink specifically designed for the PS5's M.2 slot to ensure a trouble-free and cool operating environment.
both ssd are usable and you can also copy games back and forth as you like..the games can be started normally...it's like expanding the pc with an additional hard drive
If the interface is the same, this should work without any problems. You may also need to check whether the WD is not "too fast" for your PC in the sense of paying too much for performance that you cannot use.