Short description of Modem Booster 3.0: Having delayed responses when you are gaming online and slow download speed? Modem Booster optimizes your Internet speed up to 300 percent! It is the only Internet accelerator that does a thorough check of your modem connection settings and tweaks your Internet connection settings to match with your ISP’s. So your surfing speed is really at its optimal. Fixed tool tray Options menu. Fixed popup disconnect dialog to auto close.