Buying Guide
The Best 27-Inch OLED 4K Monitors
We weighed three monitors on refresh rate and screen size; the MO27U2 has the largest screen size, and the AW2725Q costs the least.
By The PC Journal editorial team
11 min read3 products evaluated
At 27 inches, pixel density decides how sharp text and games look from a normal seat. Every monitor here measures about 27 inches, is 4K and uses an OLED panel, ordered by refresh rate.
Rankings weigh refresh rate, resolution and size as the makers state them; we did not test these monitors ourselves, and if a maker skips HDR, the guide says so.
Quick Picks
Our 3 recommendations at a glance. Tap a pick for the full verdict.
Lowest Price Here
Alienware AW2725Q 4K QD-OLED
The lowest price of the group at our last check.
Best for: Keeping the budget tight.
Our take Check price for Alienware AW2725Q 4K QD-OLED (opens in a new tab)
Largest Screen Size
GIGABYTE MO27U2
The largest screen size here (27 inches).
Best for: Buyers who put screen size first.
Our take Check price for GIGABYTE MO27U2 (opens in a new tab)
Premium Pick
ASUS ProArt PA279CDV
The highest-priced pick here at the time of writing, with Calman Verified with Delta E below 1.5.
Best for: Buyers who want the most complete package.
Our take Check price for ASUS ProArt PA279CDV (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| The lowest price of the group at our last check. | Keeping the budget tight. | Check price for Alienware AW2725Q 4K QD-OLED (opens in a new tab) |
| The largest screen size here (27 inches). | Buyers who put screen size first. | Check price for GIGABYTE MO27U2 (opens in a new tab) |
| The highest-priced pick here at the time of writing, with Calman Verified with Delta E below 1.5. | Buyers who want the most complete package. | Check price for ASUS ProArt PA279CDV (opens in a new tab) |
Our Picks
Lowest Price Here1 of 3
Alienware AW2725Q 4K QD-OLED on Amazon (opens in a new tab)
Alienware's AW2725Q is a 26.7-inch 4K QD-OLED at 240Hz with USB-C and a height, tilt, swivel and pivot stand.
Best for
- Keeping the budget tight.
Skip if
- Worth skipping when oLED burn-in risk with static desktop element is a problem.
Why we like it
It has one of the most adjustable stands among the OLED models here. It matches the MO27U2 on refresh rate (240Hz). On screen size it sits mid-pack at 26.7 inches: the MO27U2 comes in at 27 inches, and the PA279CDV comes in at 26.5 inches.
It also comes with Dolby Vision support, 166 PPI at 4K and USB-C with 15W power delivery. Reaching 240Hz at 4K needs DisplayPort 1.4 with DSC or HDMI 2.1 on your graphics card, and a GPU able to render well above 100fps at 4K. Leave the maker's pixel-refresh routines enabled and hide static taskbars to limit burn-in risk. It undercut the MO27U2 and every other pick on price at the time of writing.
Key dimensions & specs
- Refresh rate: 240Hz
- Resolution: 3840x2160 (4K)
- Size: 26.7 inches
- Panel: QD-OLED
- Response: 0.03ms
- HDR: DisplayHDR True Black 400
- Color gamut: 99% DCI-P3
- Stand: height, tilt, swivel and pivot
- USB-C: Yes
Pros
- a 240Hz refresh rate for fast motion
- 4K resolution for sharp text and detail
- a QD-OLED panel with per-pixel contrast
- DisplayHDR True Black 400 certification
Cons
- OLED burn-in risk with static desktop elements
- Screen size of 26.7 inches, behind the MO27U2 (27 inches)
Largest Screen Size2 of 3
GIGABYTE MO27U2 on Amazon (opens in a new tab)
The MO27U2 uses a QD-OLED panel at 4K and 240Hz, the fastest here, with 99% DCI-P3.
Best for
- Buyers who put screen size first.
Skip if
- Pass on it if oLED burn-in risk with static desktop element rules it out for your setup.
Why we like it
It needs a top-end card to use it fully. It matches the AW2725Q on refresh rate (240Hz). Its 27 inches screen size is the largest here; the AW2725Q comes next at 26.7 inches.
Reaching 240Hz at 4K needs DisplayPort 1.4 with DSC or HDMI 2.1 on your graphics card, and a GPU able to render well above 100fps at 4K. Leave the maker's pixel-refresh routines enabled and hide static taskbars to limit burn-in risk. Worth noting too: 4K resolution for sharp text and detail.
Worth noting too: FreeSync Premium Pro to reduce screen tearing. Its price falls between the AW2725Q and the PA279CDV, based on our last check.
Key dimensions & specs
- Refresh rate: 240Hz
- Resolution: 3840x2160 (4K)
- Size: 27 inches
- Panel: QD-OLED
- Response: 0.03ms
- Color gamut: 99% DCI-P3
- Adaptive sync: FreeSync Premium Pro
Pros
- a 240Hz refresh rate for fast motion
- 4K resolution for sharp text and detail
- a QD-OLED panel with per-pixel contrast
- 99% DCI-P3 colour coverage
Cons
- OLED burn-in risk with static desktop elements
- Costs more than the AW2725Q at the time of writing
Premium Pick3 of 3
ASUS ProArt PA279CDV on Amazon (opens in a new tab)
The ProArt PA279CDV moves the ProArt line to a 26.5-inch 4K QD-OLED panel at 120Hz, calibrated to Delta E below 1.5.
Best for
- Buyers who want the most complete package.
Skip if
- Worth skipping when oLED burn-in risk with static desktop element is a problem.
Why we like it
It adds 96W USB-C and a KVM for two computers. Its 120Hz refresh rate is the lowest in this group; the AW2725Q leads at 240Hz. On screen size it trails the group at 26.5 inches, while the MO27U2 comes in at 27 inches.
You also get Calman Verified with Delta E below 1.5 and 96W USB-C power delivery. At 4K, check that your graphics card and cable support 4K at the refresh rate you want before you buy. Leave the maker's pixel-refresh routines enabled and hide static taskbars to limit burn-in risk.
It was the most expensive pick when we checked, so weigh what it adds over the MO27U2. If refresh rate is your priority, the AW2725Q (240Hz) is the stronger choice.
Key dimensions & specs
- Refresh rate: 120Hz
- Resolution: 3840x2160 (4K)
- Size: 26.5 inches
- Panel: QD-OLED
- Response: 0.1ms
- HDR: DisplayHDR True Black 400
- Color gamut: 99% DCI-P3
- Stand: tilt, swivel, pivot and height adjustment
- USB-C: Yes
- Warranty: 3-year
Pros
- 4K resolution for sharp text and detail
- a QD-OLED panel with per-pixel contrast
- DisplayHDR True Black 400 certification
- 99% DCI-P3 colour coverage
Cons
- OLED burn-in risk with static desktop elements
- Refresh rate trails the AW2725Q (240Hz)
- Screen size trails the MO27U2 (27 inches)
How We Chose These 27-Inch OLED 4K Monitors
Each pick was assessed across 4 criteria weighted for real-world use.
- The figures behind the order
- We lined up three monitors on refresh rate, resolution, screen size and panel, using each maker's published specs. We did not test them in-house.
- What every pick has in common
- All 3, from the AW2725Q to the PA279CDV, state refresh rate, resolution and screen size and share 3840x2160 (4K) resolution and QD-OLED panel.
- Where the specs have gaps
- The MO27U2 gives no HDR; the MO27U2 gives no stand.
- Price range
- From the AW2725Q to the PA279CDV, all sat in the $500 to $1000 tier when we checked.
What to Look for in a 27-Inch OLED 4K Monitor
Key buying criteria so you get the right fit the first time.
Refresh rate
Here refresh rate runs from 120Hz on the PA279CDV to 240Hz on the AW2725Q. Start with the AW2725Q if refresh rate decides it.
Screen size across these picks
Here screen size runs from 26.5 inches on the PA279CDV to 27 inches on the MO27U2. For less, the AW2725Q is the runner-up at 26.7 inches.
Extras that separate them
The AW2725Q: 166 PPI at 4K. The MO27U2: a 240Hz QD-OLED panel at 4K. The PA279CDV: 96W USB-C power delivery.
How much to spend
All 3 sat in one tier when we checked, from the AW2725Q at the low end to the PA279CDV at the top, so decide on features first.
Start from what matters most
Keeping the budget tight: the AW2725Q. Buyers who put screen size first: the MO27U2. Buyers who want the most complete package: the PA279CDV.
How to Choose a 27-Inch OLED 4K Monitor
By priority
| Priority | Consider | Why |
|---|---|---|
| Keeping the budget tight | AW2725Q | The lowest price of the group at our last check |
| Buyers who put screen size first | MO27U2 | The largest screen size here (27 inches) |
| Buyers who want the most complete package | PA279CDV | The highest-priced pick here at the time of writing, with Calman Verified with Delta E below 1.5 |
Scroll sideways to see every column.
Key specs side by side
The AW2725Q leads on refresh rate at 240Hz, ahead of the MO27U2 at 240Hz.
| Monitor | Refresh rate | Resolution | Size | Panel |
|---|---|---|---|---|
| AW2725Q | 240Hz | 3840x2160 (4K) | 26.7 inches | QD-OLED |
| MO27U2 | 240Hz | 3840x2160 (4K) | 27 inches | QD-OLED |
| PA279CDV | 120Hz | 3840x2160 (4K) | 26.5 inches | QD-OLED |
Scroll sideways to see every column.
Frequently Asked Questions
How does the AW2725Q compare with the MO27U2 on screen size?
The MO27U2 leads at 27 inches, with the AW2725Q at 26.7 inches. The PA279CDV is at the other end of this group with 26.5 inches.
What does the PA279CDV add over the AW2725Q?
On the figures both makers state, it adds little. It does not win everywhere: the AW2725Q still leads on refresh rate (240Hz) and screen size (26.7 inches). The AW2725Q was the lowest-priced pick when we checked, so pay the difference only if a feature outside the spec sheet matters to you.
Why is the MO27U2 our Largest Screen Size pick?
It earns the label for the largest screen size here (27 inches). It suits anyone who put screen size first.
Do the AW2725Q and the PA279CDV differ on response?
The AW2725Q and the MO27U2 use 0.03ms; the PA279CDV uses 0.1ms.
What extras do the AW2725Q and the MO27U2 include?
The AW2725Q: Dolby Vision support. The MO27U2: a 240Hz QD-OLED panel at 4K. The PA279CDV: Calman Verified with Delta E below 1.5.
Bottom Line
Our first pick is the AW2725Q, chosen for the lowest price of the group at our last check. Look at the MO27U2 for the largest screen size here (27 inches) and the PA279CDV for the highest-priced pick here at the time of writing, with Calman Verified with Delta E below 1.5 if those matter more to you.
Set the refresh rate in Windows display settings; many screens start at 60Hz.