Have the chip now for almost a year; Luminosity and color temperature are okay, the 3150K are slightly colder than the 2700K usual from the bulb, which I find very pleasant, but: for several weeks gives the chip a high-pitched tone of itself, which is quieter after a few minutes, for a few days it remains even on the fairly high volume. Have the manufacturer pointed out and hope he does something, because it does not make an energy-saving but more expensive LCD to give an intolerable whistling on its own after about nine months. If you have to get as a result of the price you also pay the return shipping itself. Is not a lot, but need not be. So I have cut down on my two star rating of four.
