easy bost is a piece of software written for people that what to over clock there mb and gpu. the mb vendor puts the program on the driver cd of there mb. so people can check the temps and speed of there system and to tweeks to there system inside of the os. vga is the old old standard of pc. it still used when a pc powers on or your in the bios screen of the mb. it a old setting that lets any mb and monitor work together. when your in windows the gpu and it video drivers take over. if your using the blue vga cable then your limited to analog (older output) video limit. if your monitor has the dvi (white) connector then your using a digital output that has a higher video output. with games and video cards...it the age of the game...the older games like doom or quake..not very demanding on newer video cards...with newer games there more eye candy...(larger game engine). people with newer video cards have to pick...higher frame rates....or more eye candy.