It will be interesting to see how you proceed. My 8 year old mediocre I-3 Dell has been extremely reliable but I took a look recently at their gaming and Alienware rigs as well. Like you I have some older games I would like to keep working, specifically BoB2 and the old F1 Challenge 99-02. I'm only into season 2 on that game after owning it for about 15 years! I would like to give DCS a try at some point but it would be a "lite" install with just a few older jets that would interest me. Planes like the Mig-15, F-86, Mig-21 and F-5E. I'm mainly interested in checking out the DCS FM's so it would just be a study sim for me with a few basic single missions now and then. I really have to take a closer look at the specs to see what might be a minimal system for DCS.