LG UltraGear 27G640A-B 27" Black 2026

LG UltraGear 27G640A-B 27" Black 2026

LG
87 Overall Score
vs
MSI MAG 321CUP QD-OLED 32" Metallic Black 2025

MSI MAG 321CUP QD-OLED 32" Metallic Black 2025

MSI
90 Overall Score

Scores

Gaming
LG
78
MSI
91
Office
LG
83
MSI
88
Entertainment
LG
70
MSI
85
Professional
LG
80
MSI
77
Creative
LG
78
MSI
77
Portable
LG
15
MSI
14

Specifications

LG UltraGear 27G640A-B 27"MSI MAG 321CUP QD-OLED 32"
Display
Size27"32"
Resolution2560 x 14403840 x 2160
Panel TypeIPSOLED★
Aspect Ratio16:916:9
Curved✗✓
Curvature—1,700
Performance
Refresh Rate300 Hz★165 Hz
Response Time1 ms0.029999999329447746 ms★
Adaptive SyncFreeSync PremiumG-Sync Compatible★
Color & HDR
Brightness400 nits1000 nits★
Color GamutDCI P3 95% (CIE1976)99% DCI-P3, 98% Adobe RGB & 138% sRGB
Color Depth10-bit10-bit
HDRHDR10DisplayHDR True Black 400
HDR SupportHDR10★HDR400
Connectivity
HDMI Ports22
DisplayPort11
USB-C11
Speakers✓★✗
Headphone Jack✓✓
Ergonomics
Height Adjustable✓✓
Tilt✓✓
Swivel✓✓
Pivot✓✓
VESA Mount100x100100x100
Features
Webcam✗✗
Touchscreen✗✗
PIP/PBP✗✗
Power45W★—
Weight5.49 kg★9.10 kg

Pros & Cons

LG UltraGear 27G640A-B 27" Black 2026

  • Strong performance (91st percentile)91st %ile
  • Strong ergonomic (91st percentile)91st %ile
  • Strong color (88th percentile)88th %ile
  • Strong connectivity (88th percentile)88th %ile

MSI MAG 321CUP QD-OLED 32" Metallic Black 2025

  • Strong color (99th percentile)99th %ile
  • Strong display (99th percentile)99th %ile
  • Strong performance (96th percentile)96th %ile
  • Strong feature (92nd percentile)92nd %ile

Pricing

LG UltraGear 27G640A-B 27" Black 2026 is $523 cheaper (3.3x less).

LG UltraGear 27G640A-B 27" Black 20260.383score per dollar
vs
MSI MAG 321CUP QD-OLED 32" Metallic Black 20250.120score per dollar

LG UltraGear 27G640A-B 27" Black 2026 offers 3.2x better value for money

LG UltraGear 27G640A-B 27" Black 2026

B&H Photo
used$192
B&H Photo
$227
Amazon
$229
Newegg
$297
Best Buy
$346

MSI MAG 321CUP QD-OLED 32" Metallic Black 2025

B&H Photo
used$615
Newegg
open-box$675
Best Buy
$750
Amazon
$750
Best Buy
$750

Verdict

★ Winner: MSI MAG 321CUP QD-OLED 32"

Scores 90 overall, wins 3 of 6 usage categories and 4 of 29 specs.

LG UltraGear 27G640A-B 27" Better at:

Professional

MSI MAG 321CUP QD-OLED 32" Better at:

GamingOfficeEntertainment

Also Consider

XG27UCDMG
ASUS XG27UCDMG
99 $799
Odyssey G60SD 27"
Samsung Odyssey G60SD 27"
95 $664
M Series OLED MO27U2 SA 27"
Gigabyte M Series OLED MO27U2 SA 27"
91 $650
View Details & Prices: LG UltraGear 27G640A-B 27" Black 2026 View Details & Prices: MSI MAG 321CUP QD-OLED 32" Metallic Black 2025