#1 - Feb. 18, 2009, 5:48 p.m.
For online games it's not usually the bandwidth (your 1800kb/s) but the latency that's a factor. Latency is the time it takes for data to leave your machine, hit the game server, and return back. In general games aren't sending enough data where it would actually bottleneck because of your bandwidth, there are exceptions but I think you should be ok.