Yeah I have an old pc. Built it 6 or 7 years ago with a 1080 FTW2 card that is still going strong. For storage I have a wd 1tb drive and a 250gb ssd with windows on it. I've been fine for the most part since I don't watch 4k tv and only really play older games anymore.
Don't get a tom tom. Learn to use real paper maps. I use google maps most of the time because its fast and works. But anytime I'm out in the bush I have gps turned off I use maps I've bought or ones I've made. Learning to read and understand maps has made a big difference in my life.