That laptop is screwed when it comes for dolphin.
http://www.amazon.com/Toshiba-Satellite-C55-C5241-Laptop-Intel/dp/B010SBAJDS/ref=sr_1_1?s=pc&ie=UTF8&qid=1447533177&sr=1-1&refinements=p_n_feature_four_browse-bin%3A2289793011&pebp=1447533180993&perid=084P72SS58JDBATVZYVF
This may be able to handle lower end games at 720p, i have a macbook air (core i5 5250u, 4gb ram, HD6000) and was able to run most games at window size (usually fullscreen) and get solid performance, except for in SMS and Return to dreamland. Return to dreamland has issues in intel hd gfx atm.
http://www.amazon.com/Toshiba-Satellite-C55-C5241-Laptop-Intel/dp/B010SBAJDS/ref=sr_1_1?s=pc&ie=UTF8&qid=1447533177&sr=1-1&refinements=p_n_feature_four_browse-bin%3A2289793011&pebp=1447533180993&perid=084P72SS58JDBATVZYVF
This may be able to handle lower end games at 720p, i have a macbook air (core i5 5250u, 4gb ram, HD6000) and was able to run most games at window size (usually fullscreen) and get solid performance, except for in SMS and Return to dreamland. Return to dreamland has issues in intel hd gfx atm.