I orginially had a gtx 20 with a q6600 processor. It worked for a bit but for me to not drop to low fpses in big 1v1 fights, I had to play on low. i didn't think much of it. Recently, I upgraded to an I3 clocked at 3.3ghz and a GTX 570. I can honestly say I am getting the same exact fps as before. Slightly better, but shouldn't I be killing this game on max? Is it my power supply? I'm around 60 fps on max with my current setup and when I get in huge fights in 1v1, it will dip to the low 30s/20s. This is absurd. What is wrong?
my psu is 700watts I believe. It was came from a pre-made dell computer in 2007~?.
Not sure what a GT 20 is, but with your current setup you shouldn't have any problems in a 1v1 game with the game maxed out. Dell makes good power supplies, but it is 4 years old I would try another one. Check your temps also.
SC2 is very CPU intensive. if your fps stay above 30 in very large battles, you are still doing quite well.
Try editing the variables.txt file, and set you fps cap to a lower value, say around 40-50. This will makes any fps dips less noticeable. RTS games do not need to run at 70+fps for a good gameplay experience.