I currently have a GTX 550 ti 1 GB but i've been getting low frame rates in games like BF3 where ive been getting somewhere between the 20's and low 30's on medium. When i checked online i see people with similar specs as me getting way higher and easily running it on high. Could this be because of my old AM2+ mobo and DDR2 ram? would upgrading to a AM3+ motherboard with DDR3 1600 help with performance. I dont think its my CPU as its an Athlon ii X4 620. My temps for the 550 ti are around 55C and about 33C for my cpu while playing BF3.
Yes do the upgrade on the MOBO and RAM first because you need to help the 550 anyway you can. Even though they are kinda at the bottom of the barrel but they do ok for that.
I am not a big fan even though I own two of them and seeing what fps you are getting in BF3 at med settings. You did better than my two cards when my son tried to play and he was on low settings. Don't figure good luck to you.