Just looking for confirmation here but do devices like this have their own graphics card built-in? I know it says "External video card" in the description but on many listings for devices like that, it's a bit vague.
So if a (2nd) external monitor was plugged in via one of these devices, graphics performance would probably be a lot less than the on-board graphics card on a laptop?
We've used several devices like this to add 2nd screens to laptops but they are only used by office type users. We've got a graphic designer joining and the requirements have stepped up. Getting detailed information on display ports is often tricky. For example, this AMD based laptop appears to be able to drive up to four monitors using a USB-C to DisplayPort adapter:
I assume this method would use the on-board graphics card to drive the monitors?
But this model can't support USB-C to DisplayPort and therefore can't natively support multiple monitors?
https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad%20E580/ThinkPad_E580_specs.pdf
My take on this is USB-C to DisplayPort is more of a splitter kind of technology whereas the USB3-HMDI is a separate graphics chip?
Best Answer
Well, i own an adapter like this one, USB 3.0 to VGA, from another vendor... works fine for low end stuff like, in my case, programming, SSH...
BUT, for Youtube, for example, just lost frames in fast scenes. So, depends what you doing.