200hz 27G610A-B optiplex 5070 stuck at 1440 144hz

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8 Apr 2026
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London
Hi hope you well, I have a 200hz 27G610A-B lg 27 monitor and a dell optiplex 5070 with i5 9th gen cpu small form factor pc, I am trying to turn on the 200hz at 1440p but no luck, even if I chnage setting to 1080p it still does not show anything higher than 144hz, I am using display port which is capable. Currently it is at max settings which 1440p at 144hz.

Do I need a new low profile graphics card and which one would be able to achieve 200hz at 1440p, I do not need it for gaming. Just want to unlock 200hz at 1440p.

Many thanks
 
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