A: Yes sir, you can.
A: Yes sir, this graphics card is suitable for this motherboard.
A: Yes sir, you can.
A: Yes it will work on 8th gen processor, no need to use extra power supply. The BUS speed is basic difference between DDR3 and DDR5 graphics card. For more information please contact at 09614222333 (10 AM - 7 PM). Thank you.