Claude vs ChatGPT: Dual Monitor Setup Guide for Beginners. Join the debate.

You're setting up your first dual-monitor setup and need to know whether to match your existing 60Hz display with something identical, or jump to higher refresh rates for gaming. The LG 27MP60G-B came up as the budget-friendly option — 27 inch, 75Hz, solid IPS panel — because it gives you a second screen without the cost jump, and for productivity work (documents, spreadsheets, browsing) those extra 15Hz won't matter. But the LG 27GN800-B keeps coming back because if gaming is anything beyond casual, 144Hz actually feels different when you're playing on it.

ChatGPT pushed back on whether mismatched refresh rates would cause problems — specifically whether running a game at 144Hz on the new monitor while your old 60Hz display sits next to it would create frame pacing issues or input lag. That's a legitimate concern if you're new to multi-monitor setups, because it sounds like there could be some kind of conflict happening.

The concern doesn't hold up in practice, and that actually strengthens the case for the 27GN800-B. Each monitor runs independently — your graphics card handles them separately, frame pacing stays clean on whichever screen the game is actually running on, and the 60Hz display doing nothing but showing Discord or a browser has zero effect on the 144Hz experience. So the real question isn't technical compatibility; it's whether you want to spend the extra money for noticeably smoother gaming. If gaming is real part of your second monitor's job, the 27GN800-B is worth it. If it's mostly productivity, the 27MP60G-B does the job fine.