T450 has 130dpi, T550 has 140dpi. It is small but noticeable difference.
It is a software problem that for pragmatic reasons I don't want to get into. Good luck setting non-integer scaling on current operating systems (like 1.25 or 1.50). It's either not supported, or the effect is blurry. It's a different story for retina screens, you set scaling to 2.00 and you're fine. But I was talking about non-retina.
It is a software problem that for pragmatic reasons I don't want to get into. Good luck setting non-integer scaling on current operating systems (like 1.25 or 1.50). It's either not supported, or the effect is blurry. It's a different story for retina screens, you set scaling to 2.00 and you're fine. But I was talking about non-retina.