ASUS ROG Swift OLED PG48UQ 4K Gaming Monitor: features, specs and fit

The ASUS ROG Swift OLED PG48UQ is a 47.5-inch 4K gaming monitor that uses an OLED panel. It is large enough to double as a small television on a desk or console setup, and ASUS positions it for immersive gaming. Here is what its main specifications mean.

OLED and 4K

On an OLED panel each pixel produces its own light, so a black pixel can switch off completely. That is why ASUS describes extreme blacks and strong perceived contrast. The resolution is 4K (3840 x 2160). At 47.5 inches, the pixel density is lower than on a 27-inch 4K monitor, so sitting at normal desk distance matters for sharpness; many users place a screen this size further back than a typical monitor.

Refresh rate and response time

ASUS lists a 138Hz refresh rate, noting that this is overclocked, and a 0.1 ms grey-to-grey response time. A higher refresh rate means more screen updates per second, and a faster response time reduces motion smear. The monitor is G-SYNC compatible, which lets it match its refresh rate to the frame rate a compatible graphics card produces, reducing tearing. Driving 4K at high frame rates needs a powerful graphics card.

Colour accuracy

The panel covers 98% of the DCI-P3 colour space, with true 10-bit colour and a Delta E below 2. DCI-P3 is a wide gamut used in cinema and HDR content. A Delta E under 2 means colour differences are typically too small to notice in general viewing, according to the common rule of thumb. ASUS pairs these figures with its HDR claims.

Heatsink, brightness and coating

OLED panels are sensitive to heat over time. ASUS says the custom heatsink enables up to 8% lower temperatures, which it describes as better for long-term OLED performance. The uniform-brightness setting is optional and keeps brightness levels even for gamers who prefer that. An anti-glare micro-texture coating reduces reflections, which can help in rooms with windows or lamps.

Connectivity and size

Connections include DisplayPort 1.4 with Display Stream Compression (DSC), HDMI 2.1, a USB hub and a tripod socket on top of the monitor. HDMI 2.1 is the connection that carries 4K at high refresh rates from recent consoles. The listing gives dimensions of 3.9 x 18.9 x 19.7 inches and a weight of 4.4 lb, which appear to describe packaged or partial dimensions, so check the ASUS specification sheet for the full on-desk size and stand details.

Who it suits

It suits players who want a large 4K OLED screen for PC or console gaming and who have the desk space and graphics hardware to match.

What to check before you buy

• Desk depth: a 47.5-inch screen needs room and viewing distance.
• Graphics card: confirm it can output 4K at the refresh rates you want.
• Cables and ports: check the HDMI 2.1 and DisplayPort versions of your devices and cables.
• Static images: OLED panels can be sensitive to long-displayed static content; read the ASUS care guidance.
• Mounting: check the stand and mounting options in the manual.

The short version

• 47.5-inch 4K OLED gaming monitor.
• 138Hz (overclocked) and 0.1 ms response; G-SYNC compatible.
• 98% DCI-P3, 10-bit colour, Delta E under 2.
• Custom heatsink, anti-glare coating and optional uniform brightness.
• DisplayPort 1.4 with DSC, HDMI 2.1, USB hub and tripod socket.

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