LG
LG UltraGear OLED GX9 39GX900A-B
The LG UltraGear OLED GX9 39GX900A-B lands as a top-tier ultrawide monitor, built around 39 in.
89/100
39 in240 HzWOLED0.03 msDisplayHDR 40021.5:9
£700best price at Amazon
In stock at 1 retailer
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Why we rate it
- G-Sync
- FreeSync
- VRR
- Above-average refresh rate
- No kvm switch
- Below-average hdmi ports
Score profile
Scored against the ultrawide monitors classWhere the LG UltraGear OLED GX9 39GX900A-B wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Display
Size39 "
Resolution3440
Aspect ratio21.5
CurvatureCurved
Panel typeWOLED
Refresh rate240 Hz
Response time0.03 ms
Peak brightness1300 nits
DCI-P3 coverage98.5
HDR and contrast
HDR certificationDisplayHDR 400
Contrast ratio1300
Ports
HDMI ports1
HDMI version2.1
DisplayPort1
DisplayPort version1.4
USB-C1
Gaming features
G-SyncYes
FreeSyncYes
VRRYes
Motion blur reductionYes
More specs
Adaptive syncYes
Watch it in action
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Head to head
Highlighted cell = better in that rowLG UltraGear OLED GX9 39GX900A-B vs Samsung Samsung Odyssey OLED G9 G95SC 49" Super Ultrawide
LG UltraGear OLED GX9 39GX900A-BSamsung Odyssey OLED G9 G95SC 49" Super Ultrawide
| LGLG UltraGear OLED GX9 39GX900A-BThis page | SamsungSamsung Odyssey OLED G9 G95SC 49" Super Ultrawide | |
|---|---|---|
| Overall score | 89 /100 | 89 /100 |
| Size | 39 " | 49 " |
| Refresh | 240 Hz | 240 Hz |
| Panel type | WOLED | QD-OLED |
| Curvature | Curved | 1800 |
| Aspect ratio | 21.5 | 32 |
| Response | 0.03 ms | 0.03 ms |
Who it's for
Is the LG UltraGear OLED GX9 39GX900A-B right for you?
Buy it if
Made for the living room
Anyone building a living-room setup who want a ultrawide monitor that delivers without fuss, and this one fits.
Skip it if
Skip it if
You need kvm switch, in which case a higher-tier ultrawide monitor is the better call.
Home cinema viewer
Wants the best picture for films and gaming nights.
excellent
Everyday watcher
Mixed TV, streaming and the odd console session.
good
Budget upgrader
Replacing an older set without overspending.
okay
Common questions
Before you buy
Is the LG UltraGear OLED GX9 39GX900A-B worth it?
For most buyers, yes. It scores 89/100 against other ultrawide monitors, a top-tier result where the class average is around 63.
What stands out on the LG UltraGear OLED GX9 39GX900A-B?
Its g-sync stands out, a genuinely useful feature if your setup calls for it.
How does it compare to the LG UltraGear OLED GX9 45GX900A-B?
The LG UltraGear OLED GX9 45GX900A-B scores 92/100 versus this one at 89/100, so it is the step up on the spec sheet.
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