I'll start with VGA, which is, in my opinion, a "standard".
VGA is an analog signal. This basically means that the quality will not be as great as cables that make use of digital signals, especially at high resolutions. The problem with analog is that noise often distorts the signal and the quality ends up not being as good. So in terms of quality, go for ...
Use an active-splitter with VGA cables. With a long length on one end, you will need active electronics.
VGA is analog. The quality of your picture is going to depend on the quality of the cable you use and the electronics on your video card and monitor. With a decent quality cable of 20 meters, I would expect a good quality picture at 1024*768 resolution ...
The kind when you have 2 small boxes to be connected with pair of Ethernet-style cables. I'm using Unitek Y-5115 (I've paid about $30-$40), but this one looks promising.
I think this simple devices work by having an analog amplifier pump the signal into cheap cable and then normalize it at the other end - it doesn't really understand the ...
If your budget isn't too tight (< $40) then I would recommend DVI.
As for all cables, signal quality is dependent on the length of the cable. VGA cables are much more susceptible to degradation due to distance1 so I would highly recommend against VGA.
While cable quality may play a role, VGA is very old-school and DVI is better than it in almost ...
This VGA to HDMI with audio adapter is what you are looking for. It costs a little more than you were hoping, but there aren't many of these things around, and it has a lot of good reviews.
Converts VGA Source to HDMI Display
Supports Audio Function for HDMI Monitor and TV
Powered by USB Port
Cable Length: 8"
There several differences between each cable. Display port supports 4k at high fps. HDMI can do 4k but only at 30 fps. The one benefit of using HDMI is that it can carry audio when VGA and DVI do not. DVI in single link can only do 1080p when in dual link can carry a higher resolution. There are several other differences also which you can read about here.If ...
There are a couple of things you could do....
Option 1: VGA to HDMI Adapter
The cheapest one I found with relatively good ratings was (at the time of this post) $17 available on Amazon. VGA being an analog signal and HDMI being digital, there's no getting around the fact that you have to convert the signal.
Note: You will need to supply your own HDMI ...
Here are a couple of products:
China 3-in-1 DisplayPort Male to HDMI DVI VGA Female Adapter Cable on Global Sources
Amazon.com: CableDeconn Multiport 4-in-1 HDMI to Hdmi/dvi/vga Adapter Cable with Audio Output Converter (black): Electronics
HDMI to VGA Kit - Monoprice.com
Another option, for even longer distances, is a KVM over CAT5 extender. Startech has many options, among other vendors. I'd search on Amazon as the prices are generally better than buying directly from Startech.
For example, the SV565UTP (they are sold in pairs):
You take one and put it next to the computer and connect it to the machine's keyboard, mouse, ...