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Monitors under $400

All monitors

1 monitors under $400 from LG, ASUS, Dell and more. Price: $349.99.

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BrandAOC1
Size27-inch1
Resolution4K UHD1
Refresh100Hz7120Hz660Hz5240Hz4160Hz3180Hz3144Hz2200Hz2320Hz1
Show all 12165Hz1250Hz1260Hz1
Height-adjustable standHeight-adjustable stand1
Pivots to portraitPivots to portrait1
Adaptive sync (FreeSync or G-Sync)Adaptive sync (FreeSync or G-Sync)1
Response time1 ms or less1
HDRHDR1
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Refresh: 320Hz  ×1 resultSort byRecommendedSpec scorePrice: low to highPrice: high to low
AOCSpec score 9.0

27-inch, 4K UHD, 320Hz, 1 ms or less

+4K resolution on a 27-inch screen
+320Hz refresh rate for fast-moving games
+Adaptive sync for smoother gaming
−Mini-LED dual mode trades resolution for refresh rate
$349.99
as of 11/04/2026 12:08 PST - Details

Compare specs

monitorSizeResolutionRefreshPanelSpec scorePrice
27-inch4K UHD320Hz9.0$349.99
as of 11/04/2026 12:08 PST - Details

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Spec scores, pros and cons, and prices are explained in the How it works section of the About page.