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Though the AW3425DW can be used without calibration in its Standard picture mode, it includes many options for color gamut, grayscale and gamma among its 12 image presets.
Grayscale and Gamma Tracking
Our grayscale and gamma tests use Calman calibration software from Portrait Displays. We describe our grayscale and gamma tests in detail here.



It would have been easy to collect the first chart above and call it a day. The AW3425DW is spot-on out of the box with nearly all grayscale errors below 2dE and visually perfect gamma tracking. This is the chart I’d expect from a much more expensive professional display, not an $800 gaming monitor.
The Custom Color mode included two-point RGB controls for grayscale and hue/saturation sliders too, but no gamma options. 2.2 is the one and only choice, but it is nearly perfect, so there’s no issue there unless you want a darker or lighter presentation. Performance is exemplary, but I’d love to see options. Using just the RGB gains, I managed to get all grayscale errors below 1dE.
In the Creator mode, you can choose sRGB color. There are no grayscale adjustments, but clearly, they are not needed. However, you can change gamma. It says 2.2 but clearly, the AW3425DW tracks 2.4. This isn’t a big deal because you can just change it to 2.0 and get 2.2.
Comparisons




The AW3425DW hovers near the top both before and after calibration. Most users won’t want or need to tweak but those that do will be rewarded with a 0.43dE error which is very low. In either case, gamma outshines the rest with a tight 0.06 range of values and a 1.36% deviation from the 2.2 reference. The measured value was 2.17, excellent performance.
Color Gamut Accuracy
Our color gamut and volume testing use Portrait Displays’ Calman software. For details on our color gamut testing and volume calculations, click here.



You can see the extra gamut volume in the AW3425DW’s first color chart, which shows slight oversaturation in red and full coverage of the green primary. This is the usual weak point for non-QD screens, so if you want full DCI-P3 green coverage, QD is the only way to get it. The average error here is very low, but you can see slight hue errors in the magenta secondary. That’s repaired by the grayscale calibration while every other point stays the same.
The sRGB gamut is as close to perfect as any monitor can boast. The average error is just 0.82dE, which is something almost no screen can achieve. If you need sRGB, it doesn’t get better than this.
Comparisons


This comparison shows why I say there are no bad OLEDs. For six displays to all measure under 2dE in the gamut test is extraordinary. The difference grows a bit in the volume test. Though the AW3425DW is a QD panel, it has slightly less volume than the top three. Visually, this will be hard to see unless the content has a lot of bright red areas. That’s where the AOC, Gigabyte and Corsair pull slightly ahead. But Alienware will be more vivid than the Acer or Asus screens, which don’t have QD tech.
Test Takeaway: The AW3425DW’s color volume and accuracy are superb. Though you can find a few screens that are slightly more colorful, they don’t hit every metric as closely. And since Alienware comes in at a low price, the pendulum swings its way. If you want a color accurate OLED gaming monitor, there’s none better.
Current page: Grayscale, Gamma and Color
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Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.
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Morgan xXx Admin said:Alienware delivers on all counts with its AW3425DW. It’s a 34-inch curved ultra-wide QD-OLED panel with WQHD resolution, 240 Hz, Adaptive-Sync, HDR10 and wide gamut color. It couples near-perfect color accuracy with premium gaming performance.
Alienware AW3425DW WQHD QD-OLED review: Near-perfect color and premium performance : Read more
Are there any issues with Auto Dimming? I'm still with an LG C2 OLED (may go to C4) because it is thus far, the only OLED that allows you to turn off Auto Dimming, or ASBL, using the service menu in SDR. When gaming in HDR ASBL is on, but PC work is in SDR and it's great to have it off.
I'd like to go with an OLED monitor for Display Port and usually a KVM, but inability to turn off ASBL is a deal breaker for me. -
Elrabin
I have its predecessor, the AW3423DWF and if you set it to the TrueBlack400 setting, there is no auto dimming enabled.Morgan xXx said:Are there any issues with Auto Dimming? I'm still with an LG C2 OLED (may go to C4) because it is thus far, the only OLED that allows you to turn off Auto Dimming, or ASBL, using the service menu in SDR. When gaming in HDR ASBL is on, but PC work is in SDR and it's great to have it off.
I'd like to go with an OLED monitor for Display Port and usually a KVM, but inability to turn off ASBL is a deal breaker for me.
I'd be really surprised if this one isn't set up similarly. -
thestryker
I have it and haven't used it outside of TrueBlack, but can confirm I've noticed no such thing there. I've only noticed panel refresh when the display turns off (either via PC or manually) and this process can be interrupted if you're resuming usage.Morgan xXx said:Are there any issues with Auto Dimming?
Keep in mind using DP with 240Hz refresh requires DSC which has its own set of downsides which may or may not be important for your use case.Morgan xXx said:I'd like to go with an OLED monitor for Display Port and usually a KVM, but inability to turn off ASBL is a deal breaker for me.