I am just "stumbled monitor from BenQ. There next to the" looking for a new monitor over these 24 GL2450HM "and" GL2450 "yet this" G2450HM ". Since I was not quite clever here from the article description, I have I gives the certainty about their differences shortly on the website of BenQ. The suffix "HM" refers to the built-in speakers, which just does not have the version without "HM". The "L" refers to the LED backlight panel. Here in the description is the super good and energy-saving LED even when "G2450HM" - technique of "GL2450HM" advertised that the real "G2450" but did not I do not know now whether perhaps ordering this LCD monitor in reality the LED. 30% less power consumption and a contrast ratio of 12,000,000: 1 instead of 50,000. 1 is provided, but would not leave me on the details of 2ms and 5ms response time are the way eyewash The 2ms are in (GTG) gray to gray and not. as the 5 ms in Scharz measured to White and both therefore are the same.