Buying Guide
The Best 240Hz OLED 4K Monitors
Five monitors ranked on refresh rate and screen size, where the Odyssey G8 G81SF has the largest screen size; the AW2725Q is the cheapest route in.
By The PC Journal editorial team
12 min read5 products evaluated
240Hz is the line where motion starts to look noticeably smoother for this kind of setup. Every monitor here refreshes at 240Hz or more, is 4K and uses an OLED panel, ordered from the lowest price.
We ranked these monitors on refresh rate, resolution and size using manufacturer specifications; where a maker leaves out HDR, we say so rather than guess, since we have not benched them.
Quick Picks
Our 5 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)
Also Consider
GIGABYTE MO27U2
A 240Hz QD-OLED panel at 4K.
Best for: Buyers who want 240Hz QD-OLED panel at 4K.
Our take Check price for GIGABYTE MO27U2 (opens in a new tab)
Strong Alternative
MSI MPG 321URX QD-OLED
A built-in KVM with picture-in-picture.
Best for: Buyers who want built-in KVM with picture-in-picture.
Our take Check price for MSI MPG 321URX QD-OLED (opens in a new tab)
Worth a Look
MSI MPG 321URXW QD-OLED
Up to 1000 nits peak brightness.
Best for: Buyers who want up to 1000 nits peak brightness.
Our take Check price for MSI MPG 321URXW QD-OLED (opens in a new tab)
Largest Screen Size
Samsung Odyssey OLED G8 G81SF 32-inch
The largest screen size here (32 inches).
Best for: Buyers who put screen size first.
Our take Check price for Samsung Odyssey OLED G8 G81SF 32-inch (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) |
| A 240Hz QD-OLED panel at 4K. | Buyers who want 240Hz QD-OLED panel at 4K. | Check price for GIGABYTE MO27U2 (opens in a new tab) |
| A built-in KVM with picture-in-picture. | Buyers who want built-in KVM with picture-in-picture. | Check price for MSI MPG 321URX QD-OLED (opens in a new tab) |
| Up to 1000 nits peak brightness. | Buyers who want up to 1000 nits peak brightness. | Check price for MSI MPG 321URXW QD-OLED (opens in a new tab) |
| The largest screen size here (32 inches). | Buyers who put screen size first. | Check price for Samsung Odyssey OLED G8 G81SF 32-inch (opens in a new tab) |
Our Picks
Lowest Price Here1 of 5
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
- Choose another pick if you can't accept this: oLED burn-in risk with static desktop elements.
Why we like it
It has one of the most adjustable stands among the OLED models here. On screen size it trails the group at 26.7 inches, while the Odyssey G8 G81SF comes in at 32 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 was the cheapest of the group when we checked; the MO27U2 was the next step up.
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 trails the Odyssey G8 G81SF (32 inches)
Also Consider2 of 5
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 want 240Hz QD-OLED panel at 4K.
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. On screen size it sits mid-pack at 27 inches: the Odyssey G8 G81SF comes in at 32 inches, and the AW2725Q comes in 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. It also brings a 240Hz refresh rate for fast motion. On price it sat second of 5, between the cheaper AW2725Q and the pricier MPG 321URX, at the time of writing.
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
Strong Alternative3 of 5
MSI MPG 321URX QD-OLED on Amazon (opens in a new tab)
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
- Buyers who want built-in KVM with picture-in-picture.
Skip if
- Pass on it if oLED burn-in risk with static desktop element rules it out for your setup.
Why we like it
USB-C input rounds out the ports. On screen size it ties with the MPG 321URXW at 31.5 inches. You also get HDMI 2.1 and DisplayPort 1.4a inputs and an HDMI 2.1 input for consoles.
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. On price it sat third of 5, between the cheaper MO27U2 and the pricier MPG 321URXW, at the time of writing.
Key dimensions & 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 AW2725Q at the time of writing
Worth a Look4 of 5
MSI MPG 321URXW QD-OLED on Amazon (opens in a new tab)
MSI's MPG 321URXW is a 31.5-inch 4K QD-OLED at 240Hz with 99% DCI-P3 coverage.
Best for
- Buyers who want up to 1000 nits peak brightness.
Skip if
- Choose another pick if you can't accept this: oLED burn-in risk with static desktop elements.
Why we like it
It is the 32-inch step up from the 272URX. It matches the MPG 321URX on screen size (31.5 inches). It also comes with up to 1000 nits peak brightness, a white finish and an HDMI 2.1 input.
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: a 240Hz refresh rate for fast motion. When we checked, only the MPG 321URX and cheaper picks cost less, and the Odyssey G8 G81SF cost more.
Key dimensions & specs
- Refresh rate: 240Hz
- Resolution: 3840x2160 (4K)
- Size: 31.5 inches
- Panel: QD-OLED
- Response: 0.03ms
- HDR: DisplayHDR True Black 400
- Color gamut: 99% DCI-P3
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 AW2725Q at the time of writing
Largest Screen Size5 of 5
Samsung Odyssey OLED G8 G81SF 32-inch on Amazon (opens in a new tab)
Samsung's G81SF puts a 240Hz QD-OLED panel at 4K into a 32-inch screen.
Best for
- Buyers who put screen size first.
Skip if
- Skip it if this is a deal-breaker for you: 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. Its 32 inches screen size is the largest here; the MPG 321URX comes next at 31.5 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.
It was the highest-priced of the 5 picks at the time of writing, so the case for it rests on what it adds over the MPG 321URXW and the rest. The trade-off is refresh rate; for more, the AW2725Q offers 240Hz.
Key dimensions & 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
- Costs more than the AW2725Q at the time of writing
How We Chose These 240Hz OLED 4K Monitors
Each pick was assessed across 4 criteria weighted for real-world use.
- The figures behind the order
- We lined up five monitors on refresh rate, resolution, screen size and panel as the makers state them. We did not test them in-house.
- What every pick has in common
- All 5, from the AW2725Q to the Odyssey G8 G81SF, 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 MPG 321URX and the Odyssey G8 G81SF give no color gamut.
- Price range
- From the AW2725Q to the Odyssey G8 G81SF, all sat in the $500 to $1000 tier when we checked.
What to Look for in a 240Hz OLED 4K Monitor
Key buying criteria so you get the right fit the first time.
Screen size
Here screen size runs from 26.7 inches on the AW2725Q to 32 inches on the Odyssey G8 G81SF. The MPG 321URX comes second for less money.
Extras that separate them
The MPG 321URX: HDMI 2.1 and DisplayPort 1.4a inputs. The MPG 321URXW: a white finish. The Odyssey G8 G81SF: logo and taskbar detection to dim static elements.
How much to spend
All 5 sat in one tier when we checked, from the AW2725Q at the low end to the Odyssey G8 G81SF 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 Odyssey G8 G81SF.
Size for your desk distance
24 to 25 inches suits 1080p and competitive play at a typical desk. 27 inches pairs well with 1440p and 4K; 32 inches suits 4K at a deeper desk.
How to Choose a 240Hz 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 want 240Hz QD-OLED panel at 4K | MO27U2 | A 240Hz QD-OLED panel at 4K |
| Buyers who want built-in KVM with picture-in-picture | MPG 321URX | A built-in KVM with picture-in-picture |
| Buyers who want up to 1000 nits peak brightness | MPG 321URXW | Up to 1000 nits peak brightness |
| Buyers who put screen size first | Odyssey G8 G81SF | The largest screen size here (32 inches) |
Scroll sideways to see every column.
Key specs side by side
The Odyssey G8 G81SF leads on screen size at 32 inches, ahead of the MPG 321URX at 31.5 inches.
| Monitor | Refresh rate | Resolution | Size | Panel |
|---|---|---|---|---|
| AW2725Q | 240Hz | 3840x2160 (4K) | 26.7 inches | QD-OLED |
| MO27U2 | 240Hz | 3840x2160 (4K) | 27 inches | QD-OLED |
| MPG 321URX | 240Hz | 3840x2160 (4K) | 31.5 inches | QD-OLED |
| MPG 321URXW | 240Hz | 3840x2160 (4K) | 31.5 inches | QD-OLED |
| Odyssey G8 G81SF | 240Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
Scroll sideways to see every column.
Frequently Asked Questions
How does the MPG 321URX compare with the Odyssey G8 G81SF on screen size?
The Odyssey G8 G81SF leads at 32 inches, with the MPG 321URX at 31.5 inches. The AW2725Q is at the other end of this group with 26.7 inches.
What does the Odyssey G8 G81SF add over the AW2725Q?
On paper it adds screen size (32 inches against 26.7 inches). The AW2725Q was the lowest-priced pick when we checked, so pay the difference only if those gains matter to you.
Why is the Odyssey G8 G81SF our Largest Screen Size pick?
It earns the label for the largest screen size here (32 inches). It suits anyone who put screen size first.
Does the AW2725Q have USB-C, and which others do?
The AW2725Q and the MPG 321URX have it. The makers of the MO27U2, the MPG 321URXW and the Odyssey G8 G81SF don't say.
What extras do the AW2725Q and the MO27U2 include?
The AW2725Q: Dolby Vision support. The MO27U2: a 240Hz QD-OLED panel at 4K. The MPG 321URX: a built-in KVM with picture-in-picture.
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 a 240Hz QD-OLED panel at 4K, the MPG 321URX for a built-in KVM with picture-in-picture and the MPG 321URXW for up to 1000 nits peak brightness if those matter more to you.
Use the cable in the box; older cables can cap the refresh rate.