Most web sites use a width of around 980px and do not scale the width if more is available. But intranet web sites often use a minimum with of 1280px. The 11" is capable of both so it's doable. It might be necessary to plug in an external monitor at times for testing but you should be able to write to the code. Anything short of a 17" LCD might require an external monitor depending on the resolution you are supporting. I don't think speed is an issue.