Asus PG348Q and Acer X34 review: G-sync giants

Two full-blooded gaming monitors from Taiwan.



The Acer Predator X34 and the Asus ROG Swift PG348Q bear more similarities than that they differ, at least on paper. A resolution of 3440x1440 pixels and a curved AH-IPS panel with a maximum refresh rate of 100 Hz, support for G-sync and a hefty, but almost identical price tag. This raises the question: which one is better?

'Better' in this price class is a relative concept, especially if you are comparing monitors with the same panel, driven by the same scaler. You will not have to worry about quality anyway in this price class, though it is of course always possible to be unlucky. That is what they made RMA for and they are usually fairly lenient regarding expensive monitors, at least within the warranty period.

So when we receive two nearly identical products from difference manufacturers, we cannot really do much more than measuring their performance. Response time and input lag are of course very important factors for gaming displays such as the Acer Predator X34 and the Asus PG348Q, but we also expect color fidelity to be at least decent for monitors as expensive as these.

Acer Predator X34bmiphz

On the following pages we will dive deeper into the various features of the individual models, but in general it is interesting to see that the manufacturers are reaching the limits of the DisplayPort 1.2 standard. As we saw before with other models, the highest refresh rate can only be achieved by 'overclocking'. The panel and scaler support this (compare it to a 'OC' version of a graphics card with a guaranteed overclock), just as the included DisplayPort cable. If you use another cable, this is not guaranteed. As long as DP 1.3 is not yet implemented things will remain like this, and it is probable that we will have to wait out another generation of graphics cards before we will encounter DP 1.3.

ASUS RoG Swift PG348Q

The hefty price tag of both monitors is the second aspect that both monitors have in common. Ultra-wide, quad HD monitors are never really cheap, but you will pay about 1000 pounds for one of these. This is about 240 pounds more than a model without an overclock and G-sync. The Acer XR341CK with FreeSync, which we reviewed a while ago, is also about 160 pounds cheaper. You can already find an UWQHD display for about 630 pounds, even a curved model, in our price comparison tool. With that in mind, it should be clear that the two models we are discussing in this review are really top-of-the-line. Of course this is partly because of Nvidia's far too expensive G-sync scaler and partly because the panels need to be able to run overclocked, but even then the premium you pay is a bit high in our opinion. In any case, those who want the best of the best will have to pay for it, and a monitor will last you longer than a graphics card. Let us take a look at what we are working with here with the Acer Predator X34 and the Asus ROG Swift PG348Q.


two products discussed in this review

  Product Lowest price

Acer Predator X34bmiphz

34 inch, 3440x1440, 110 ppi, AH-IPS, Nvidia G-Sync, 100 Hz, HDMI input, DisplayPort input, 4 ms, 300 cd/m²

Specifications Test results Reviews Prices


Avg. £949.99
1 shop, no stock

Asus RoG Swift PG348Q

34 inch, 3440x1440, 110 ppi, IPS, Nvidia G-Sync, 100 Hz, HDMI input, DisplayPort input, 5 ms, 300 cd/m², 1000 : 1

Specifications Test results Reviews Prices


Avg. £884.98
7 shops, 7x stock

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