The only really important thing is if the computer has 10/100 or gigabit ethernet. I have an HP DV5-2047ca (you can look it up on HP Canada) and I've seen it seed at 8MB/s (That's megabytes, not bits) and downloading at 8MB/s (at the same time). Point being, I was reaching the limit of the internet connection. Since no retail / build your down PCs come in at under $200, you'd have to look for used PCs. If you are unsure about the specs of a used PCs, post a link to it and/or NEATLY lay out the specs so that I (or someone else) can let you know if it is sufficient. Since I have no clue where you live, it wouldn't make sense for me to search for you.