Solar panel output

Thanks everyone. This is the info I needed. I'm a newb to solar, but learning. I do have a 40 amp MPPT charge controller running a 390 AH battery bank. 180 AH is more than I need, though I might be stretching it winter. The reason for my post is I have ab opportunity to purchase a 190 watt Canadian solar panel for $130 negotiable. I'd have to get another charge controller. I was thinking of getting an inexpensive PWM and putting it on an independent circuit, but wasn't sure I'd need the extra panel or not. My loads are minimal,though I use my laptop a lot. I might be interested in running an Xbox now and again, though, and maybe the microwave a few minutes a day.