How to correctly connect a second monitor through a second video card?

Question

Video cards

Hello!
I have a motherboard B550M-DS3H
graphics card faces. Gigabyte 1050ti with many hdmi + DVI that can be paired.
3 widescreen lg 25um58 monitors

For specialized software, the task arose to spread one monitor to a second video card (I haven’t chosen which one yet). The nuance is that the 1050ti is quite high, of course it does not block the second PCI-E slot, but there is a wiring from the motherboard (slots) down there and, for example, the same 1050ti would not get stupidly there because of these wires. Accordingly, you need to look for a board that fits the dimensions of its case or radiator, or collect your own.
The power of the second card is not important from the word at all, as long as HDMI / DVI is (one of).

Questions:
1) Can someone tell me how to insert another card in such motherboards and how the engineers provided (in quotation marks) interface connectors from below so that such cards cannot be inserted there .. or maybe I don’t know the models).
2) What model would you recommend with the nuance of a "high" radiator or case, in contrast to the connection slot, so that there is enough space for the connectors from below
3) will the image output to 3 monitors on the system 2 monitors to one board and 1 to another?

I will be grateful, thanks!

Answer 1

If you are collective farming, then you take a raiser and connect the card as you like inside the case, even with extensions (having put the cable inside beforehand), I remember doing this
If you don’t want to collective farm, then take any motherboard with two pci-e16, just make sure that there are two pci between them -e4 ​​slots and not one, then there will be a margin of space.
There are also video cards ( or rather , the ability to replace the cooling system with dropsy) in which it occupies one slot and not two, but it is very difficult to find one on sale, with a very high price so much that it is better to order someone custom, since this requires access to the machine (preferably CNC for aluminum or copper) and straight arms.

Answer 2

The last connector is usually used for any small things, such as a controller for additional USB ports.
The second vidyuhi can be squeezed in, of course, if you find a small-sized one on sale, something like https://www.nix.ru/autocatalog/msi/msi_video/1Gb-P...
But you should understand that with the second vidyukha you may block the main air intake vidyahi, there may be a problem with overheating.
If performance is not important, maybe you should look at USB graphics cards?
Something like St-Lab U-1510 https://www.nix.ru/autocatalog/video_cards_usb/_28... costs 4 tr. like a cheap vidyuha "plug".

Answer 3

So it seems, if you connect 2 video cards, then only one will still work. I can be wrong, I'm just based on the fact that if an external video card is used, then the internal one is turned off.