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Gigabyte G34WQC Review: High-Contrast, Immersive Ultrawide

A high bar for ultrawide gaming monitors

Gigabyte G34WQC
(Image: © Gigabyte)

To learn about our HDR testing, see our breakdown of how we test PC monitors.

The Gigabyte G34WQC checks most of the boxes on the list of things needed for good HDR. Its VA panel makes the most of the technology with over 3,000:1 native contrast, and, according to our testing, it covers 85% of the DCI-P3 gamut.

HDR Brightness and Contrast

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HDR

(Image credit: Tom's Hardware)
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HDR

(Image credit: Tom's Hardware)
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HDR

(Image credit: Tom's Hardware)

The G34WQC adds brightness in HDR mode with nearly 500 nits peak brightness. With a respectable black level of 0.1426 nit, it delivers just under 3,500:1 contrast. This is a little higher than the SDR number but not as high as monitors with a dynamic contrast feature or selective dimming backlight. Screens like the 32" Samsung Odyssey G7 can put out over 17,000:1 using those techniques. But the Gigabyte still beats the other displays in its category and certainly renders better HDR than an IPS monitor, like the LG above.

Grayscale, EOTF and Color

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Greyscale

(Image credit: Tom's Hardware)
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Greyscale

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There are no color adjustments available in the G34WQC’s HDR mode, but our tests show it to be accurate enough that few users will notice a problem. At 50% brightness and higher, we can see a slightly cool tint in test patterns, but real-world content looked pretty good. Bright whites and mid-tone grays were a little flat, but brighter colors weren't affected. The luminance curve stays close to spec with a transition to tone-mapping at 68%. This means detail will be clear in shadow and highlight areas.

Looking at the gamut chart, we see a little undersaturation in the upper part of the triangle (red, green, yellow and cyan), while blue and magenta are slightly over. Tracking is linear so detail stays crisp. Overall, the image is a bit better in HDR mode.

Christian Eberle
Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors.
  • Nekyno
    Thanks for a first review of this screen, great to hear that Gigabyte has done well with overdrive settings and input lag is fine. Moreover 85% DCI-P3 with an average calibration is good.

    However, many users report flickering with VRR turned on both in Freesync and G-sync. Have you experience any and which GPUs have you been using?
    Reply
  • D1v1n3D
    VA panels have a major issue with ghosting or horrible pixel blur at fast motion Nano IPS is still a better looking panel all day everyday, I just wish they would fix the OLED issues of burn in images, and progress into Gaming monitors with 240hz + I will never go less than a 240hz at 1440p specially now that there are cards that can push that at ultra or high settings. GO RX series :). and HP Omen x27 240hz has dci-p3 of 90% on a TN panel and has been out for over a year this Gigabyte is GARBO a lot of games don't natively support ultra wide very niche specially in high end gaming or competition gaming.
    Reply
  • aalkjsdflkj
    Thank you for the review! I've been waiting a few years for a monitor with these specs - 3440x1440, >100Hz, HDR, Freesync and GSync compatible, curved screen, and most importantly under $400. I thought I'd be waiting a few more years but it looks like they did a good job with this one on top of having the characteristics I was looking for.
    Reply
  • TechLurker
    How does this compare to the Nixeus EDG34? Specs look very similar.
    Reply
  • AlexScan
    Can you confirm that HDR and Freesync/Gsync work at 144hz simultaneously ?

    We were also able to engage HDR with both FreeSync and G-Sync (unofficially) at 144 Hz through DisplayPort. If you connect via HDMI, you'll be limited to a 100 Hz refresh rate
    Reply
  • ES3KC
    So, it's now December 2020. Is the Dell S3220DGF "STILL" the best gaming monitor? Christian Eberle what do you think? Dell or Gigabyte?

    Also in your reviews, is there a benefit to either of these monitors using consoles vs PC? Both older xbox one x or the new ones Ps5 and/or xbox series x? Which one makes better since if you will play both console and PC?
    Reply
  • ketrab
    Would it be safe to say this outperforms Viotek GNV34DBE for the same price?!
    Reply
  • ketrab
    Admin said:
    The Gigabyte G34WQC 34-inch ultrawide gaming monitor sells for a surprisingly low price. With 144Hz, HDR and more, it sets a high bar for the performance/price ratio.

    Gigabyte G34WQC Review: High-Contrast, Immersive Ultrawide : Read more

    I'm confused on your part around Calibration Settings. You provide different brightness based on the nits. How the user supposed to know which one should be used? Please advise and thank you in advance.
    Reply
  • junglist724
    This still doesn't have anywhere near the amount of brightness or contrast a proper HDR display has. My pg35vq breaks 26000:1 contrast ratio and 1100 nits. It was pricey but now that miniled panels are coming this year I expect more affordable FALD panels will start appearing.
    D1v1n3D said:
    VA panels have a major issue with ghosting or horrible pixel blur at fast motion Nano IPS is still a better looking panel all day everyday, I just wish they would fix the OLED issues of burn in images, and progress into Gaming monitors with 240hz + I will never go less than a 240hz at 1440p specially now that there are cards that can push that at ultra or high settings. GO RX series :). and HP Omen x27 240hz has dci-p3 of 90% on a TN panel and has been out for over a year this Gigabyte is GARBO a lot of games don't natively support ultra wide very niche specially in high end gaming or competition gaming.
    There's a handful of VA panels that have very fast response times even with dark transitions like the Odyssey G7 and Asus pg35vq.
    Reply
  • aalkjsdflkj
    I purchased this monitor largely on the basis of this review. I'm incredibly happy with my purchase. However, when my computer goes to sleep the monitor starts to cycle through full-screen colors. Does anyone else see this behavior? No other monitor I have does this, and Gigabyte "help" hasn't been able to provide an answer. It seems as though the person I've been conversing with doesn't have very strong English language skills so we keep talking past one another.
    If anyone has this monitor and can either confirm that this is normal or that their monitor doesn't behave this way I would appreciate it. Even better would be if someone knows how to turn this off!
    Reply