Usually, the game will run fine on the newer computers, especially stock. But mods like FotRSU and others almost require the LAA to run smoother. Almost all, including stock, will use the LAA when encountering a lot of info to track, such as when close to ports, or with a lot of airplanes. You also get better response from TC, though I'm not saying that you'll drop out of 256x or 512x any faster and not get sunk...
