No, it absolutely will not. I run it all the time on my core duo macbook with 2 GB of RAM and with full resolution but medium settings the fps can drop in to single digits in a pitched DotA battle. I'm sure it would be the same in a normal multiplayer game.
If you want to see buttery smooth, run it on something with a real GPU (fps range from about 50 to 100 on my gf's core duo imac 17"). Never for a second underestimate the complete and utter crappiness that is the GMA 950.