Corsair XENEON 34QHD165 Ultrawide Monitor vs Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor (2026)

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

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

Corsair XENEON 34QHD165 Ultrawide Monitor

9.0/10 Excellent

4.4★ (2,400 owners)

34" 21:9 1440p 165Hz IPS, 1ms, USB-C 65W, HDR600, Corsair iCUE. Corsair ecosystem ultrawide.

Full Review

Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor

9.1/10 Excellent

4.7★ (8,400 owners)

27" 1440p IPS 165Hz, 1ms, 98% DCI-P3, G-Sync + FreeSync, USB hub. The value 1440p all-rounder.

Full Review

At a Glance

	Corsair XENEON 34QHD165 Ultrawide Monitor	Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor
247Verdict Score	9.0/10	9.1/10
Owner Rating	4.4★ (2,400)	4.7★ (8,400)
Verdict	Excellent	Excellent
Size	34-inch 21:9	27" 1440p
Refresh	165Hz	165Hz

Quick Verdict

This is a genuine draw — both score within 0.15 points of each other. Corsair XENEON 34QHD165 Ultrawide Monitor: 34" 21:9 1440p 165Hz IPS, 1ms, USB-C 65W, HDR600, Corsair iCUE. Corsair ecosystem ultrawide. Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor: 27" 1440p IPS 165Hz, 1ms, 98% DCI-P3, G-Sync + FreeSync, USB hub. The value 1440p all-rounder. Choose based on your specific needs. Check the current price on Amazon →

Pros & Cons Side by Side

Corsair XENEON 34QHD165 Ultrawide Monitor

34-inch 21:9 delivers ultrawide immersion at lower cost than OLED ultrawide alternatives
USB-C 65W charges a laptop from the monitor with single-cable setup
HDR600 is mid-tier real HDR — better than HDR400 but below Mini-LED alternatives
Corsair iCUE RGB syncs with keyboards, mouse and PC case for coordinated lighting
165Hz at WQHD 3440×1440 for competitive play on the ultrawide format

IPS panel at 21:9 — less contrast than VA or OLED for atmospheric gaming
Corsair iCUE software has occasional stability issues
34-inch requires minimum 80cm desk depth for comfortable viewing

Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor

98% DCI-P3 colour accuracy rivals monitors costing significantly more
165Hz IPS with 1ms response covers competitive and everyday gaming
Both G-Sync Compatible and FreeSync Premium Pro for any GPU
USB hub and fully ergonomic stand for a complete desk setup
Dell's reliability and warranty service backing 8,400 reviews at 4.7★

165Hz trails 240Hz alternatives for top-tier competitive play
IPS contrast lower than OLED for dark-scene atmosphere
HDR400 tier — not genuine HDR brightness

FAQ

Which is better, Corsair XENEON 34QHD165 or Dell S2721DGF 27-inch 1440p?

Is the Corsair XENEON 34QHD165 worth the extra cost?

The Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor matches or exceeds it at a potentially lower price point.

Who is the Corsair XENEON 34QHD165 best suited to?

34" 21:9 1440p 165Hz IPS, 1ms, USB-C 65W, HDR600, Corsair iCUE. Corsair ecosystem ultrawide.

Who is the Dell S2721DGF 27-inch 1440p best suited to?

27" 1440p IPS 165Hz, 1ms, 98% DCI-P3, G-Sync + FreeSync, USB hub. The value 1440p all-rounder.

What are the main downsides of each?

Corsair XENEON 34QHD165 Ultrawide Monitor: IPS panel at 21:9 — less contrast than VA or OLED for atmospheric gaming; Corsair iCUE software has occasional stability issues. Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor: 165Hz trails 240Hz alternatives for top-tier competitive play; IPS contrast lower than OLED for dark-scene atmosphere.

Do owner ratings agree with our verdict?

Largely, yes — Corsair XENEON 34QHD165 Ultrawide Monitor sits at 4.4★ from 2,400 verified Amazon owners, and Dell S2721DGF 27-inch 1440p 165Hz Gaming Monitor at 4.7★ from 8,400.

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