Dell Alienware AW3423DWF 34-inch QD-OLED vs iiyama G-Master GB2770QSU 27-inch 165Hz QHD (2026)

✍️ By the 247Verdict Editorial Team📅 Updated 05 October 2026

Which is better? We compared both on score, owner ratings, pros and cons.

Dell Alienware AW3423DWF 34-inch QD-OLED

9.4/10 Excellent

4.6★ (4,200 owners)

34" 21:9 QD-OLED 165Hz, 0.1ms, 99.3% DCI-P3, 1800R. Ultrawide QD-OLED gaming.

Full Review

iiyama G-Master GB2770QSU 27-inch 165Hz QHD

8.9/10 Great

4.5★ (3,600 owners)

27" 1440p 165Hz IPS, 1ms, FreeSync, USB hub, 100W USB-C. Underrated 1440p value monitor.

Full Review

At a Glance

	Dell Alienware AW3423DWF 34-inch QD-OLED	iiyama G-Master GB2770QSU 27-inch 165Hz QHD
247Verdict Score	9.4/10	8.9/10
Owner Rating	4.6★ (4,200)	4.5★ (3,600)
Verdict	Excellent	Great
Panel	QD-OLED	IPS
Refresh	165Hz	165Hz

Quick Verdict

Both are strong choices, but the Dell Alienware AW3423DWF 34-inch QD-OLED edges ahead with a 9.4/10 vs 8.9/10. 34" 21:9 QD-OLED 165Hz, 0.1ms, 99.3% DCI-P3, 1800R. Ultrawide QD-OLED gaming. That said, the iiyama G-Master GB2770QSU 27-inch 165Hz QHD is worth considering if 27" 1440p 165Hz IPS, 1ms, FreeSync, USB hub, 100W USB-C. Underrated 1440p value monitor. Check the current price on Amazon →

Pros & Cons Side by Side

Dell Alienware AW3423DWF 34-inch QD-OLED

QD-OLED panel delivers OLED blacks and Quantum Dot colour accuracy in ultrawide format
34-inch 21:9 ultrawide at QD-OLED quality — the best ultrawide gaming display available
0.1ms response time combines ultrawide immersion with OLED responsiveness
1800R curvature wraps the ultrawide display naturally around field of view
99.3% DCI-P3 serves professional creative work alongside gaming immersion

£750+ — QD-OLED ultrawide premium pricing
21:9 aspect ratio has game compatibility limitations for older titles
QD-OLED burn-in risk with static HUD elements over extended gaming periods

iiyama G-Master GB2770QSU 27-inch 165Hz QHD

100W USB-C charges and connects a laptop with one cable — the highest USB-C wattage in budget gaming monitors
USB hub with 2x USB-A passes through from USB-C connection — desk tidy organisation
1440p 165Hz IPS at under £250 — competitive with LG UltraGear at lower pricing
iiyama's 30-year professional monitor heritage — OEM supplier to major display brands
FreeSync Premium for tear-free AMD GPU gaming

iiyama brand less recognised than LG or Samsung in consumer gaming market
Lower peak brightness than premium alternatives for HDR content
Limited HDR400 tier — not genuine HDR performance

FAQ

Which is better, Dell Alienware AW3423DWF 34-inch or iiyama G-Master GB2770QSU 27-inch?

Is the Dell Alienware AW3423DWF 34-inch worth the extra cost?

Yes — Dell Alienware AW3423DWF 34-inch QD-OLED scores higher at 9.4/10 vs 8.9/10.

Who is the Dell Alienware AW3423DWF 34-inch best suited to?

34" 21:9 QD-OLED 165Hz, 0.1ms, 99.3% DCI-P3, 1800R. Ultrawide QD-OLED gaming.

Who is the iiyama G-Master GB2770QSU 27-inch best suited to?

27" 1440p 165Hz IPS, 1ms, FreeSync, USB hub, 100W USB-C. Underrated 1440p value monitor.

What are the main downsides of each?

Dell Alienware AW3423DWF 34-inch QD-OLED: £750+ — QD-OLED ultrawide premium pricing; 21:9 aspect ratio has game compatibility limitations for older titles. iiyama G-Master GB2770QSU 27-inch 165Hz QHD: iiyama brand less recognised than LG or Samsung in consumer gaming market; Lower peak brightness than premium alternatives for HDR content.

Do owner ratings agree with our verdict?

Largely, yes — Dell Alienware AW3423DWF 34-inch QD-OLED sits at 4.6★ from 4,200 verified Amazon owners, and iiyama G-Master GB2770QSU 27-inch 165Hz QHD at 4.5★ from 3,600.

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