ASUS ROG Swift PG259QN 360Hz Esports Monitor 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.

ASUS ROG Swift PG259QN 360Hz Esports Monitor

9.1/10 Excellent

4.5★ (2,400 owners)

24.5" FHD 360Hz IPS, 1ms, G-Sync Ultimate, NVIDIA Reflex Analyzer. Built for esports.

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

	ASUS ROG Swift PG259QN 360Hz Esports Monitor	iiyama G-Master GB2770QSU 27-inch 165Hz QHD
247Verdict Score	9.1/10	8.9/10
Owner Rating	4.5★ (2,400)	4.5★ (3,600)
Verdict	Excellent	Great
Refresh	360Hz	165Hz

Quick Verdict

Both are strong choices, but the ASUS ROG Swift PG259QN 360Hz Esports Monitor edges ahead with a 9.1/10 vs 8.9/10. 24.5" FHD 360Hz IPS, 1ms, G-Sync Ultimate, NVIDIA Reflex Analyzer. Built for esports. 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

ASUS ROG Swift PG259QN 360Hz Esports Monitor

360Hz refresh rate at 1080p FHD — maximum frames per second for competitive play
NVIDIA Reflex Analyzer built into the display hardware measures system latency directly
G-Sync Ultimate certification is the highest tier — full variable refresh plus HDR400
1080p FHD at 24.5-inch is the esports standard — professional tournament specifications
ASUS ROG Armory Crate software controls display settings from the same software as keyboard and mouse

1080p in 2026 — 1440p is more future-proof for non-competitive use
24.5-inch limits immersion for single-player games versus 27-inch alternatives
Premium pricing for an FHD monitor when QD-OLED alternatives approach at similar cost

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, ASUS ROG Swift PG259QN 360Hz or iiyama G-Master GB2770QSU 27-inch?

Is the ASUS ROG Swift PG259QN 360Hz worth the extra cost?

Yes — ASUS ROG Swift PG259QN 360Hz Esports Monitor scores higher at 9.1/10 vs 8.9/10.

Who is the ASUS ROG Swift PG259QN 360Hz best suited to?

24.5" FHD 360Hz IPS, 1ms, G-Sync Ultimate, NVIDIA Reflex Analyzer. Built for esports.

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?

ASUS ROG Swift PG259QN 360Hz Esports Monitor: 1080p in 2026 — 1440p is more future-proof for non-competitive use; 24.5-inch limits immersion for single-player games versus 27-inch alternatives. 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 — ASUS ROG Swift PG259QN 360Hz Esports Monitor sits at 4.5★ from 2,400 verified Amazon owners, and iiyama G-Master GB2770QSU 27-inch 165Hz QHD at 4.5★ from 3,600.

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