Skip to main content

LG 27G640A-B 27-inch Ultragear QHD vs KOORUI 32 Inch Curved Gaming Monitor — Head-to-Head (2026)

The specs side by side, with links to both product pages.

LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor, 300Hz, 1ms, NVIDIA G-Sync, AMD FreeSync Premium, VESA DisplayHDR 400, HDMI 2.1, USB Type-C, Tilt/Height/Swivel/Pivot Stand, Black

LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor, 300Hz, 1ms, NVIDIA G-Sync, AMD FreeSync Premium, VESA DisplayHDR 400, HDMI 2.1, USB Type-C, Tilt/Height/Swivel/Pivot Stand, Black

Check price on Amazon
🛒 Check Price on Amazon
vs

*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.

Spec-by-spec

SpecLG 27G640A-B 27-inch Ultragear QHD…KOORUI 32 Inch Curved Gaming Monitor…
BrandLGKOORUI
ColorBlackBlack
ShapeFlatCurved
Brightness400 candela_per_square_meter300 candela_per_square_meter
Model Name27G640A-B.AUSQKOORUI 31.5 Inch Computer Monitor QHD 1440P Gaming Monitor 170Hz
ResolutionQHD Wide 1440pQHD Wide 1440p
Color Gamut9599
Pixel Pitch0.230.27
Screen Size27 inches32 inches
Aspect Ratio16:916:9
Display TypeLEDLCD
Model Number27G640A-B.AUSQG3221SC
Refresh Rate300 hertz170 hertz
Adaptive SyncFreeSync Premium, G-Sync CompatibleFreeSync, G-Sync Compatible

Keep researching

Already narrowing? Open each product page for the full spec sheet, FAQ, and a link to the current Amazon price: LG 27G640A-B 27-inch Ultragear QHD… · KOORUI 32 Inch Curved Gaming Monitor…. Browse the full Gaming Monitors catalog or read our Gaming Monitors buying guide for tier picks. You can also compare up to four products side-by-side, jump to all categories, or check the benchmarks index for hardware-only matchups.

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →