A:AnswerNo, this APU comes with thermal paste already applied to the included air cooler heatsink. If you use a different cooler that may vary, but the included cooler includes a thin and adequate layer of thermal paste already applied.
A:AnswerNo, this is a Processor with a built in GPU (Graphics Processing Unit.) If you want to stream you'll need a dedicated (discreet) graphics card separate from the processor.
I recommend a Nvidia 1660 Super GPU for starters if you already have a decent computer and don't mind running a little lower quality.
If you are building a PC and need a processor, then a Ryzen 5 is your best bet.
A:AnswerYes, if you update the bios first. The bios that supports this cpu came out November 2019 so if your bios is older than that, you'll need to update.
A:AnswerThis processor/graphics processor combo (known as an APU) is from a generation where DDR4 is the common memory type. The exact memory choice is determined by the motherboard, but is rarely anything other than DDR4 for this generation of processor.
If you're looking for the best possible DDR4 memory to pair with this processor, I would recommend a low latency kit rated at a speed of 3200MHz such as the Corsair Vengeance LPX kit sold by Best Buy.