What to look for in a second monitor?

[Velcade]

I'm slowly building out the rest of my 'battle station' and it's time to turn my attention to a second monitor.

 

I've got an ASUS PG279Q as my primary.  I love this monitor but I don't really want to buy another for my secondary monitor.

 

Secondary monitor will be used for work and monitoring (Twitch, CPU/GPU temps, Discord). 

 

 

My question is:  Should I focus on matching refresh rate or resolution?  Does either matter for a secondary monitor?  I've heard Windows 10 has issues if you secondary monitor is a lower refresh rate that G-Sync will cap your main to that rate.

 

My second monitor choices are:

• PB277Q
• MG248QR
• VG248QE

 

I'd like to keep it sub 300 but I am certainly open to any suggestions.

 

Thanks!

[PlayStation 2]

Non-matching resolutions are far easier to deal with (as in, even if there's problems, it's not something that is a pain to fix at all) than non-matching refresh rates, at least on Windows.

[Velcade]

@Dan CastellanetaThank you.  Refresh rates were my worry but I'm surprised I haven't found more information on this topic. 

[PlayStation 2]

5 minutes ago, Velcade said:

@Dan CastellanetaThank you.  Refresh rates were my worry but I'm surprised I haven't found more information on this topic. 

Yeah, there's a number of games that simply don't like mismatched refresh rates (looks at CSGO), so having a lower resolution secondary monitor over a lower refresh rate secondary would be the more practical option.