HDMI even 2.0 usually limits us to 60Hz so first we need to know what video ports this laptop has.
I'm reading https://us.msi.com/Laptop/GT73VR-TITAN-PRO-7th-Gen-GEFORCE%3Csup%3E%C2%AE%3Csup%3E-GTX-1070.html#hero-overview
There it is. Mini Display v1.2.
Remember I won't get into why 60 happens on HDMI and convertors. That's well done. You can google up why such as http://www.tomshardware.com/answers/id-2192493/display-port-mini-refresh-rate-issue.html and I'll focus on the Mdv1.2 connection and possible monitors.
That out of the way let's read https://www.howtogeek.com/267650/how-to-make-your-120hz-or-144hz-monitor-use-its-advertised-refresh-rate/ and notice that Asus. Not 1080p so searching.
Read https://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=120hz+monitor&ignorear=0&N=-1&isNodeId=1 and pick one that meets your display port connection and price.
I recently bought MSI GT73VR TITAN-426 laptop.
This is a FullHD laptop and NOT a 4K display.
I am looking for a good external FullHD (NOT 4K) monitor that goes with this configuration. Could you please suggest a good 24" FullHD monitor that does justice to the 120hz refresh rate of the builtin display? Also, how many of these monitors would I be able to connect to the same?
Also mentioned in the product description is that, it supports TWO 4k monitors, could you please shed some light on what size monitors they are talking about?
Please note that I reside in India but I could relate to other countries variants, through specifications.
Laptop Description: MSI GT73VR TITAN-426 (i7-7820HK, 16GB RAM, 256GB NVMe SSD + 1TB HDD, NVIDIA GTX 1070 8GB, 17.3" Full HD, 120Hz, Windows 10) VR Ready Gaming Notebook