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Lenovo - ThinkVision P27u-20 vs LG - UltraGear 27GX790A-B

Last updated · How Mars Score works
ThinkVision P27u-20LENOVORENDER
Probe A
Lenovo
ThinkVision P27u-20
58.3/ 100C
Performance66· 45%
Panel49· 40%
Connectivity—· 15%
UltraGear 27GX790A-BLGRENDER
Probe B
LG
UltraGear 27GX790A-B
72.6/ 100B
Performance92· 45%
Panel48· 40%
Connectivity—· 15%
Quick verdict

Between the ThinkVision P27u-20 and UltraGear 27GX790A-B, the ThinkVision P27u-20 comes out ahead in usb-c power delivery / screen size, while the UltraGear 27GX790A-B wins on refresh rate / peak brightness. Overall, the ThinkVision P27u-20 scores 58.3 and the UltraGear 27GX790A-B scores 72.6 on our Mars Score.

Buying advice

Which should you buy?

The UltraGear 27GX790A-B is the clear pick on raw spec strength, leading by 14.3 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the ThinkVision P27u-20 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are usb-c power delivery, screen size, dci-p3 coverage.

Pick the UltraGear 27GX790A-B if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are refresh rate, peak brightness, response time (gtg), among others.

There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.

Bottom line: the UltraGear 27GX790A-B is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Lenovo - ThinkVision P27u-20 wins

  • ▲USB-C Power Delivery — 53.85% more. 100 W vs 65 W.
  • ▲Screen size — 1.89% more. 27 " vs 26.5 ".
  • ▲DCI-P3 coverage — 0.51% more. 99 % vs 98.5 %.

Why LG - UltraGear 27GX790A-B wins

  • ▲Refresh rate — 700.00% more. 480 Hz vs 60 Hz.
  • ▲Peak brightness — 225.00% more. 1300 nits vs 400 nits.
  • ▲Response time (GtG) — 99.50% less. 0.03 ms vs 6 ms.
  • ▲Has G-Sync.
  • ▲Has FreeSync.
  • ▲Panel type: OLED (vs IPS).
Full readout

Spec comparison

Panel

SpecLenovo - ThinkVision P27u-20LG - UltraGear 27GX790A-B
Screen sizeⓘ27 "lead26.5 "
Panel typeⓘIPSOLEDlead
Resolutionⓘ4Klead1440p
Aspect ratioⓘ16:916:9
Curvedⓘfalsefalse

Performance

SpecLenovo - ThinkVision P27u-20LG - UltraGear 27GX790A-B
Refresh rateⓘ60 Hz480 Hzlead
Response time (GtG)ⓘ6 ms0.03 mslead
Peak brightnessⓘ400 nits1300 nitslead
DCI-P3 coverageⓘ99 %lead98.5 %
HDRⓘtruetrue
G-Syncⓘfalsetruelead
FreeSyncⓘfalsetruelead

Connectivity

SpecLenovo - ThinkVision P27u-20LG - UltraGear 27GX790A-B
HDMI ports12lead
DisplayPort ports11
USB-C inputtruetrue
USB-C Power Deliveryⓘ100 Wlead65 W
KVMtrueleadfalse
Reader questions

Frequently asked

Which has higher refresh rate, ThinkVision P27u-20 or UltraGear 27GX790A-B?+

UltraGear 27GX790A-B refreshes at 480Hz vs 60Hz.

Which has faster response time, ThinkVision P27u-20 or UltraGear 27GX790A-B?+

UltraGear 27GX790A-B responds in 0.03ms vs 6ms.

Does ThinkVision P27u-20 or UltraGear 27GX790A-B have USB-C with power delivery?+

Both offer USB-C PD — 100W on ThinkVision P27u-20, 65W on UltraGear 27GX790A-B.

Drill down

Spec-level deep dives

Screen size→Panel type→Resolution→Aspect ratio→Curved→Refresh rate→Response time (GtG)→Peak brightness→DCI-P3 coverage→HDR→G-Sync→FreeSync→
By manufacturer

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LG →4

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