DVI Cable 1.5 meter extra wire just means more voltage drop. And if you’re using a peripheral connector to PCI Express adapter then be sure to plug each of the adapter’s peripheral connectors into a separate PSU cable. They gave you two peripheral connectors for a reason.
DVI Cable 1.5 meter connectors are used to transmit video from a source (like a computer) to a display device (like a monitor, TV or projector). The main difference between VGA and DVI is in picture quality and the way the video signals travel.
VGA connectors and cables carry analog signals while DVI can carry both analog and digital. DVI is newer and offers better, sharper display compared to VGA. You can easily tell them apart because VGA connectors (and ports) are blue while DVI connectors are white.
In contrast to HDMI, neither VGA nor DVI support audio. So when connecting with a TV or a projector or home theater system, you can use a single HDMI cable to carry both audio and video signals or use a single VGA/DVI cable for video and a separate audio cable.
DVI stands for Digital Visual Interface. DVI cables can provide an HD video signal but are most often used to connect to computer monitors. Some older HDTVs have DVI ports instead of HDMI ports. Separate audio cables are required for sound.
A DVI–D connector on a graphics card sends out a digital signal only, while a DVI-I connector can send out a digital signal (for digital displays such as flat panel LCD monitors) as well as analog signal (for older displays such as a CRT monitor) using aDVI to VGA adaptor shown below. DVI Cable 1.5 meter support audio. So when connecting with a TV or a projector or home theater system, you can use a single HDMI cable to carry both audio and video signals or use a single VGA/DVI cable for video and a separate audio cable.