Buying Guide
The Best 4K OLED Monitors
Six 4K OLED monitors at 26.5 to 32 inches, compared on refresh rate, HDR, ports and warranty, including one calibrated for colour work.
By Alex Morgan, PC Hardware Editor
12 min read6 products evaluated
4K OLED monitors combine very sharp text with the contrast of self-lit pixels. They are also demanding: 4K at 240Hz needs a high-end graphics card, and static desktop elements carry some burn-in risk.
We compared listed specifications; we did not test these monitors.
Quick Picks
Which of the 6 picks to look at first. Tap a name for the full analysis.
Best 27-Inch 4K OLED
GIGABYTE MO27U2A 27-inch 4K QD-OLED at 240Hz.
Best for: Sharp OLED on a standard desk.
Check price for GIGABYTE MO27U2 on Amazon (opens in a new tab)
Best Warranty
ASUS ROG Swift PG32UCDMA 3-year warranty that lists burn-in coverage.
Best for: Long-term ownership.
Check price for ASUS ROG Swift PG32UCDM on Amazon (opens in a new tab)
Best for Two Computers
MSI MPG 321URX QD-OLEDA built-in KVM with picture-in-picture.
Best for: Desks shared with a work laptop.
Check price for MSI MPG 321URX QD-OLED on Amazon (opens in a new tab)
Best for Bright Rooms
Samsung Odyssey OLED G8 G81SF 32-inchA Glare Free coating listed as 54% less glossy.
Best for: Rooms with windows.
Check price for Samsung Odyssey OLED G8 G81SF 32-inch on Amazon (opens in a new tab)
Best Value 32-Inch
MSI MAG 321UP QD-OLEDA 165Hz QD-OLED with a 48Gbps HDMI 2.1 port.
Best for: Consoles and PCs.
Check price for MSI MAG 321UP QD-OLED on Amazon (opens in a new tab)
Best for Colour Work
ASUS ProArt PA279CDVCalman Verified with Delta E below 1.5.
Best for: Photo and video editing.
Check price for ASUS ProArt PA279CDV on Amazon (opens in a new tab)
Our Picks
Best 27-Inch 4K OLED1 of 6
GIGABYTE MO27U2
The MO27U2 uses a QD-OLED panel at 4K and 240Hz, the fastest here, with 99% DCI-P3.
Best for
- Sharp OLED on a standard desk.
Skip if
- Worth skipping when oLED burn-in risk with static desktop elements is a problem.
Why we like it
It needs a top-end card to use it fully. On refresh rate it ties with the PG32UCDM, the MPG 321URX and the Odyssey G8 G81SF at 240Hz. Its 27 inches screen size ranks fifth of 6 here, behind the PG32UCDM (32 inches) and ahead of the PA279CDV (26.5 inches).
Like the MAG 321UP, it has a FreeSync Premium Pro, while the PG32UCDM uses a G-SYNC Compatible. 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 cost the least of the 5 picks at the time of writing, with the MPG 321URX the next step up.
Key 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
- Screen size of 27 inches, behind the PG32UCDM (32 inches)
The catch
What it gives up: screen size of 27 inches, behind the PG32UCDM (32 inches); by contrast, the PG32UCDM comes in at 32 inches.
Best Warranty2 of 6
ASUS ROG Swift PG32UCDM
The ASUS ROG Swift PG32UCDM pairs a 32-inch 4K QD-OLED panel at 240Hz with a 3-year warranty that lists burn-in coverage.
Best for
- Long-term ownership.
Skip if
- Worth skipping when oLED burn-in risk with static desktop elements is a problem.
Why we like it
It also carries 90W USB-C power delivery for a laptop. It matches the MO27U2, the MPG 321URX and the Odyssey G8 G81SF on refresh rate (240Hz). On screen size it ties with the Odyssey G8 G81SF and the MAG 321UP at 32 inches.
A G-SYNC Compatible is unique to it among these picks, while the MAG 321UP uses a FreeSync Premium Pro. 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.
G-SYNC Compatible works on NVIDIA cards over DisplayPort, and FreeSync covers AMD cards. It was the most expensive pick when we checked, so weigh what it adds over the PA279CDV.
Key specs
- Refresh rate
- 240Hz
- Resolution
- 3840x2160 (4K)
- Size
- 32 inches
- Panel
- QD-OLED
- Response
- 0.03ms
- HDR
- DisplayHDR True Black 400
- Color gamut
- 99% DCI-P3
- Adaptive sync
- G-SYNC Compatible
- USB-C
- Yes
- Warranty
- 3-year
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
- Costs more than the MO27U2 at the time of writing
Best for Two Computers3 of 6
MSI MPG 321URX QD-OLED
MSI's MPG 321URX is a 31.5-inch 4K QD-OLED at 240Hz with a built-in KVM, so one keyboard and mouse can switch between a desktop and a laptop.
Best for
- Desks shared with a work laptop.
Skip if
- Skip it if this is a deal-breaker for you: oLED burn-in risk with static desktop elements.
Why we like it
USB-C input rounds out the ports. On refresh rate it ties with the MO27U2, the PG32UCDM and the Odyssey G8 G81SF at 240Hz. Its 31.5 inches screen size ranks fourth of 6 here, behind the PG32UCDM (32 inches) and ahead of the PA279CDV (26.5 inches).
You also get HDMI 2.1 and DisplayPort 1.4a inputs. 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 was priced above the MO27U2 and below the MAG 321UP at the time of writing.
Key specs
- Refresh rate
- 240Hz
- Resolution
- 3840x2160 (4K)
- Size
- 31.5 inches
- Panel
- QD-OLED
- Response
- 0.03ms
- HDR
- DisplayHDR True Black 400
- 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
- Costs more than the MO27U2 at the time of writing
Best for Bright Rooms4 of 6
Samsung Odyssey OLED G8 G81SF 32-inch
Samsung's G81SF puts a 240Hz QD-OLED panel at 4K into a 32-inch screen.
Best for
- Rooms with windows.
Skip if
- Choose another pick if you can't accept this: oLED burn-in risk with static desktop elements.
Why we like it
Its Glare Free coating cuts reflections that glossy OLEDs show in bright rooms, and it detects logos and taskbars to dim them. On refresh rate it ties with the MO27U2, the PG32UCDM and the MPG 321URX at 240Hz. It matches the PG32UCDM and the MAG 321UP on screen size (32 inches).
You also get a Glare Free coating Samsung lists as 54% less glossy than standard anti-reflection film and logo and taskbar detection to dim static elements. 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. G-SYNC Compatible works on NVIDIA cards over DisplayPort, and FreeSync covers AMD cards.
Key specs
- Refresh rate
- 240Hz
- Resolution
- 3840x2160 (4K)
- Size
- 32 inches
- Panel
- QD-OLED
- Response
- 0.03ms
- HDR
- DisplayHDR True Black 400
- Adaptive sync
- G-SYNC Compatible, 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
- DisplayHDR True Black 400 certification
Cons
- OLED burn-in risk with static desktop elements
Best Value 32-Inch5 of 6
MSI MAG 321UP QD-OLED
The MSI MAG 321UP is a 32-inch QD-OLED that stops at 165Hz, which keeps its price below the 240Hz models.
Best for
- Consoles and PCs.
Skip if
- Worth skipping when oLED burn-in risk with static desktop elements is a problem.
Why we like it
Its HDMI 2.1 port carries full 48Gbps bandwidth for 4K at 165Hz from a console or PC. On refresh rate it sits mid-pack at 165Hz: the MO27U2 offers 240Hz, and the PA279CDV comes in at 120Hz. It matches the PG32UCDM and the Odyssey G8 G81SF on screen size (32 inches).
Like the MO27U2, it has a FreeSync Premium Pro, while the PG32UCDM uses a G-SYNC Compatible. Reaching 165Hz 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 was priced above the MPG 321URX and below the PA279CDV at the time of writing.
Key specs
- Refresh rate
- 165Hz
- Resolution
- 3840x2160 (4K)
- Size
- 32 inches
- Panel
- QD-OLED
- Response
- 0.03ms
- Adaptive sync
- FreeSync Premium Pro
Pros
- 165Hz for smoother motion than a 60Hz office screen
- 4K resolution for sharp text and detail
- a QD-OLED panel with per-pixel contrast
- FreeSync Premium Pro to reduce screen tearing
Cons
- OLED burn-in risk with static desktop elements
- Costs more than the MO27U2 at the time of writing
Best for Colour Work6 of 6
ASUS ProArt PA279CDV
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
- Photo and video editing.
Skip if
- Pass on it if oLED burn-in risk with static desktop elements rules it out for your setup.
Why we like it
It adds 96W USB-C and a KVM for two computers. On refresh rate it trails the group at 120Hz, while the MO27U2 offers 240Hz. Its 26.5 inches screen size is the smallest in this group; the PG32UCDM leads at 32 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 priced above the MAG 321UP and below the PG32UCDM at the time of writing.
Key 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 MO27U2 (240Hz)
- Screen size trails the PG32UCDM (32 inches)
The catch
It gives ground on refresh rate, where the MO27U2 offers 240Hz.
How We Chose These 4K OLED Monitors
Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.
- The figures behind the order
- We lined up six monitors on refresh rate, resolution, screen size and panel, using each maker's published specs. These are research figures, not bench results: 2 of 6 picks leave out HDR.
- The shared baseline
- All 6, from the MO27U2 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 and the MAG 321UP give no HDR; the MPG 321URX, the Odyssey G8 G81SF and the MAG 321UP give no color gamut.
- Price range
- From the MO27U2 to the PG32UCDM, all sat in the $500 to $1000 tier when we checked.
What to Look for in a 4K OLED Monitor
Key buying criteria so you get the right fit the first time.
How much refresh rate you need
Across these 6 picks refresh rate spans 120Hz (the PA279CDV) to 240Hz (the MO27U2). If refresh rate is your first filter, the MO27U2 sets the ceiling at 240Hz.
Screen size across these picks
Here screen size runs from 26.5 inches on the PA279CDV to 32 inches on the PG32UCDM, a 21% spread. Start with the PG32UCDM if screen size decides it.
A 4K monitor showing a detailed landscape wallpaper Features beyond the spec table
The Odyssey G8 G81SF: logo and taskbar detection to dim static elements. The MAG 321UP: a console mode. The PA279CDV: 96W USB-C power delivery.
How much to spend
Price does little to separate these 5: the MO27U2 through the PG32UCDM all landed in the $500 to $1000 tier, which leaves refresh rate to decide it.
Match the pick to your priority
Sharp OLED on a standard desk: the MO27U2. Long-term ownership: the PG32UCDM. Desks shared with a work laptop: the MPG 321URX.
How to Choose a 4K OLED Monitor
By priority
| Priority | Consider | Why |
|---|---|---|
| Sharp OLED on a standard desk | MO27U2 | A 27-inch 4K QD-OLED at 240Hz |
| Long-term ownership | PG32UCDM | A 3-year warranty that lists burn-in coverage |
| Desks shared with a work laptop | MPG 321URX | A built-in KVM with picture-in-picture |
| Rooms with windows | Odyssey G8 G81SF | A Glare Free coating listed as 54% less glossy |
| Consoles and PCs | MAG 321UP | A 165Hz QD-OLED with a 48Gbps HDMI 2.1 port |
| Photo and video editing | PA279CDV | Calman Verified with Delta E below 1.5 |
Scroll sideways to see every column.
Key specs side by side
The MO27U2 leads on refresh rate at 240Hz, ahead of the PG32UCDM at 240Hz.
| Monitor | Refresh rate | Resolution | Size | Panel |
|---|---|---|---|---|
| MO27U2 | 240Hz | 3840x2160 (4K) | 27 inches | QD-OLED |
| PG32UCDM | 240Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
| MPG 321URX | 240Hz | 3840x2160 (4K) | 31.5 inches | QD-OLED |
| Odyssey G8 G81SF | 240Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
| MAG 321UP | 165Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
| PA279CDV | 120Hz | 3840x2160 (4K) | 26.5 inches | QD-OLED |
Scroll sideways to see every column.
Frequently Asked Questions
Is the PG32UCDM worth paying more than the MO27U2?
What it brings is screen size (32 inches against 27 inches). Both sat in the $500 to $1000 tier when we checked, so the gains in screen size cost little extra by tier.
What makes the MO27U2 the Best 27-Inch 4K OLED?
The label rests on a 27-inch 4K QD-OLED at 240Hz. It is aimed at sharp OLED on a standard desk.
Do the MO27U2 and the PA279CDV differ on response?
The MO27U2, the PG32UCDM, the MPG 321URX, the Odyssey G8 G81SF and the MAG 321UP use 0.03ms; the PA279CDV uses 0.1ms.
Beyond the specs, what sets the MO27U2 and the PG32UCDM apart?
The MO27U2: a 240Hz QD-OLED panel at 4K. The PG32UCDM: a 3-year warranty that lists burn-in coverage. The MPG 321URX: a built-in KVM with picture-in-picture.
Who should choose the PG32UCDM?
The PG32UCDM carries our Best Warranty label for a 3-year warranty that lists burn-in coverage. It ranks second of 6 here and sat in the $500 to $1000 tier at our last price check; it suits long-term ownership.
Bottom Line
The MO27U2 is the pick for a 27-inch desk, and the PG32UCDM for a 32-inch screen with burn-in coverage. MSI's 321URX suits two-computer desks, and the ProArt PA279CDV suits colour work.
Related Guides
- Related guideThe Best 4K 144Hz Gaming Monitors
- Related guideThe Best 32-Inch Gaming Monitors
- Related guideThe Best OLED Monitors
- Lower budgetThe Best Cheap 4K Monitors
- Similar guideThe Best QD-OLED 4K Monitors
- ExplainerHow to Choose a 4K Monitor
- Explainer1080p vs 1440p vs 4K Monitor
- Also see: graphics cardsGPU Power Connectors Explained
- Similar guideThe Best 120Hz OLED 4K Monitors
- Topic hubAll 4k monitors guides
About the author
PC Hardware Editor
Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.
Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility
View all articles