VGA? Ewww! You've got a HOT ROCKET computer and TURTLE monitors??
How old are they? Check the back of your monitors and see if they don't also have DVI ports... it's been YEARS since monitors were "VGA only".
My primary displays are wonderful IPS panels from Mass Multiples but are quite old. The 4th unit is TN and a complete POS (how do people use this crap??). The TN panel does have a DVI port. This panel is on top in a pyramid config and not used for anything important. All will be replaced soon with new IPS panels (as soon as I figure out which backlight I want).