A:AnswerHello,
Yes you can add that extra storage, there should be enough room. The case is a standard ATX case so it should be able to fit any 2070 Super model. You can measure it to double check!
A:AnswerHello,
Yes, you can stream on this PC. As far as specs go, Twitch recommends having at least an Intel Core i5-4670 processor or its AMD equivalent as well as 8GB of RAM.
-iBUYPOWER Sales Team
A:AnswerHello,
The system does not come with DDR4 2666mhz non RGB RAM. The reason we cannot give you the name of any other info on the RAM is because we use a variety of RAM sticks in our systems depending on what we have in stock, so not every system has the same model in it.
A:AnswerHello,
The computer does not have speakers, so you will need an audio device hooked up to it in order to hear anything (speakers, monitor, headphones, etc.)
A:AnswerHello,
The power supply can support the extra RAM. The exact RAM model should be written on the stick somewhere, it may look like a long list or numbers or letters.