Buying Guide
The Best Curved USB-C Monitors
From the XG27WCMS to the MPG 321CURX: four monitors ranked on refresh rate and screen size, with who should skip each one.
By The PC Journal editorial team
11 min read4 products evaluated
Curved screens matter most when you sit close to a large or wide panel. Every monitor here is curved and accepts video over USB-C, ordered by refresh rate.
We sorted these picks by refresh rate, resolution and size, working from the makers' own data; nothing here was tested in-house, and if a maker skips panel, the guide says so.
Quick Picks
Our 4 recommendations at a glance. Tap a pick for the full verdict.
Fastest Refresh
ASUS ROG Strix XG27WCMS Curved
The highest refresh rate here (280Hz).
Best for: Competitive shooters where motion clarity matters most.
Our take Check price for ASUS ROG Strix XG27WCMS Curved (opens in a new tab)
Premium Pick
MSI MPG 321CURX QD-OLED
A 1700R curve at the highest price in the group.
Best for: Buyers for whom price is not the deciding factor, since the XG27WCMS costs less.
Our take Check price for MSI MPG 321CURX QD-OLED (opens in a new tab)
Also Consider
MSI MAG 321CUP QD-OLED
A 1700R curve.
Best for: Buyers who want 1700R curve.
Our take Check price for MSI MAG 321CUP QD-OLED (opens in a new tab)
Largest Screen Size
AOC AGON AG493UCX 49-inch
The largest screen size here (49 inches).
Best for: Buyers who put screen size first.
Our take Check price for AOC AGON AG493UCX 49-inch (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| The highest refresh rate here (280Hz). | Competitive shooters where motion clarity matters most. | Check price for ASUS ROG Strix XG27WCMS Curved (opens in a new tab) |
| A 1700R curve at the highest price in the group. | Buyers for whom price is not the deciding factor, since the XG27WCMS costs less. | Check price for MSI MPG 321CURX QD-OLED (opens in a new tab) |
| A 1700R curve. | Buyers who want 1700R curve. | Check price for MSI MAG 321CUP QD-OLED (opens in a new tab) |
| The largest screen size here (49 inches). | Buyers who put screen size first. | Check price for AOC AGON AG493UCX 49-inch (opens in a new tab) |
Our Picks
Fastest Refresh1 of 4
ASUS ROG Strix XG27WCMS Curved on Amazon (opens in a new tab)
ASUS's XG27WCMS curves a 27-inch 1440p panel and overclocks it to 280Hz.
Best for
- Competitive shooters where motion clarity matters most.
Skip if
- Skip it if screen size matters most to you; the AG493UCX offers 49 inches.
Why we like it
USB-C input and a three-year warranty are listed. The 27-inch curved 1440p panel overclocks to 280Hz, lists a 1ms response, covers 95% of DCI-P3 and includes USB-C. Nothing else here matches its 280Hz refresh rate; the MPG 321CURX comes closest at 240Hz.
On screen size it trails the group at 27 inches, while the AG493UCX comes in at 49 inches. No other pick in this guide offers a 2560x1440 (1440p) resolution; compare the MAG 321CUP, which has a 3840x2160 (4K) resolution. It shares a G-SYNC Compatible with the MPG 321CURX and MAG 321CUP; the AG493UCX goes with an adaptive-Sync.
To see 280Hz at 1440p, connect over DisplayPort or HDMI 2.1; older HDMI 2.0 ports cap the refresh rate lower. G-SYNC Compatible works on NVIDIA cards over DisplayPort, and FreeSync covers AMD cards. It undercut the AG493UCX and every other pick on price at the time of writing.
Key dimensions & specs
- Refresh rate: 280Hz
- Resolution: 2560x1440 (1440p)
- Size: 27 inches
- HDR: HDR
- Color gamut: 95% DCI-P3
- Adaptive sync: G-SYNC Compatible
- USB-C: Yes
- Warranty: 3-year
Pros
- a 280Hz refresh rate for fast motion
- 1440p resolution, sharper than 1080p at 27 inches
- 95% DCI-P3 colour coverage
- G-SYNC Compatible to reduce screen tearing
Cons
- Screen size trails the AG493UCX (49 inches)
Premium Pick2 of 4
MSI MPG 321CURX QD-OLED on Amazon (opens in a new tab)
The MPG 321CURX stands out for a 1700R curve, and it adds a 98W USB-C port and KVM switch.
Best for
- Buyers for whom price is not the deciding factor, since the XG27WCMS costs less.
Skip if
- Choose another pick if you can't accept this: oLED burn-in risk with static desktop elements.
Why we like it
It also offers a 240Hz refresh rate and offers a 32 inches screen size. Its 240Hz refresh rate ranks second of 4 here, behind the XG27WCMS (280Hz) and ahead of the AG493UCX (120Hz). On screen size it ties with the MAG 321CUP at 32 inches.
Like the MAG 321CUP, it has a 3840x2160 (4K) resolution, while the XG27WCMS uses a 2560x1440 (1440p) resolution. Like the MAG 321CUP, it has a QD-OLED panel, while the AG493UCX uses a VA panel. Like the MAG 321CUP, it has a DisplayHDR True Black 400, while the XG27WCMS uses an HDR.
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. It was the highest-priced of the 4 picks at the time of writing, so the case for it rests on what it adds over the MAG 321CUP and the rest.
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
- 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 XG27WCMS at the time of writing
Also Consider3 of 4
MSI MAG 321CUP QD-OLED on Amazon (opens in a new tab)
What the MAG 321CUP brings to the table is a 1700R curve, plus HDMI 2.1 and a 15W USB-C port.
Best for
- Buyers who want 1700R curve.
Skip if
- Worth skipping when oLED burn-in risk with static desktop element is a problem.
Why we like it
It also offers a 165Hz refresh rate and offers a 32 inches screen size. On refresh rate it sits mid-pack at 165Hz: the XG27WCMS offers 280Hz, and the AG493UCX comes in at 120Hz. It matches the MPG 321CURX on screen size (32 inches).
It shares a 3840x2160 (4K) resolution with the MPG 321CURX; the AG493UCX goes with a 5120x1440 resolution. It shares a DisplayHDR True Black 400 with the MPG 321CURX; the AG493UCX goes with a DisplayHDR 400. 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. G-SYNC Compatible works on NVIDIA cards over DisplayPort, and FreeSync covers AMD cards. When we checked, only the AG493UCX and cheaper picks cost less, and the MPG 321CURX cost more.
Key dimensions & specs
- Refresh rate: 165Hz
- 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
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
- DisplayHDR True Black 400 certification
Cons
- OLED burn-in risk with static desktop elements
- Costs more than the XG27WCMS at the time of writing
Largest Screen Size4 of 4
AOC AGON AG493UCX 49-inch on Amazon (opens in a new tab)
AOC's AG493UCX is a 49-inch 5120x1440 VA screen at 120Hz with USB-C and DisplayHDR 400.
Best for
- Buyers who put screen size first.
Skip if
- Worth skipping when a VA panel that can smear dark transition is a problem.
Why we like it
It is the non-OLED super-ultrawide here. Its 120Hz refresh rate is the lowest in this group; the XG27WCMS leads at 280Hz. Nothing else here matches its 49 inches screen size; the MPG 321CURX comes closest at 32 inches.
It is the only pick here with a 5120x1440 resolution; the XG27WCMS has a 2560x1440 (1440p) resolution instead. It is the only pick here with a VA panel; the MPG 321CURX has a QD-OLED panel instead. It is the only pick here with a DisplayHDR 400; the MPG 321CURX has a DisplayHDR True Black 400 instead.
It also comes with an 1800R 49-inch curve, USB-C docking and Dual QHD resolution. Its price falls between the XG27WCMS and the MAG 321CUP, based on our last check.
Key dimensions & specs
- Refresh rate: 120Hz
- Resolution: 5120x1440
- Size: 49 inches
- Panel: VA
- Response: 1ms
- HDR: DisplayHDR 400
- Adaptive sync: Adaptive-Sync
- USB-C: Yes
Pros
- Adaptive-Sync to reduce screen tearing
- a USB-C input for laptops
- 1800R 49-inch curve
- USB-C docking
Cons
- a VA panel that can smear dark transitions
- Refresh rate trails the XG27WCMS (280Hz)
- Costs more than the XG27WCMS at the time of writing
How We Chose These Curved USB-C Monitors
Each pick was assessed across 4 criteria weighted for real-world use.
- What we compared
- We lined up four monitors on refresh rate, resolution, screen size and panel, using each maker's published specs. These are research figures, not bench results: 1 of 4 picks leave out panel.
- The shared baseline
- All 4, from the XG27WCMS to the AG493UCX, state refresh rate, resolution and screen size and share USB-C.
- Where the specs have gaps
- The XG27WCMS gives no panel; the XG27WCMS gives no response.
- Price range
- At our last check the picks ran from the XG27WCMS ($250 to $500) to the MPG 321CURX ($500 to $1000).
What to Look for in a Curved USB-C Monitor
Key buying criteria so you get the right fit the first time.
Refresh rate across these picks
Across these 4 picks refresh rate spans 120Hz (the AG493UCX) to 280Hz (the XG27WCMS). If refresh rate is your first filter, the XG27WCMS sets the ceiling at 280Hz.
Screen size
Here screen size runs from 27 inches on the XG27WCMS to 49 inches on the AG493UCX, an 81% spread. Start with the AG493UCX if screen size decides it.
Panel
The MPG 321CURX and the MAG 321CUP list QD-OLED; the AG493UCX lists VA.
Response
The MPG 321CURX and the MAG 321CUP list 0.03ms; the AG493UCX lists 1ms. Sort out response before price: it splits 3 stated picks into groups of 2 and 1.
Features beyond the spec table
The MPG 321CURX: a 98W USB-C port and KVM switch. The MAG 321CUP: HDMI 2.1 and a 15W USB-C port. The AG493UCX: USB-C docking.
How to Choose a Curved USB-C Monitor
By priority
| Priority | Consider | Why |
|---|---|---|
| Competitive shooters where motion clarity matters most | XG27WCMS | The highest refresh rate here (280Hz) |
| Buyers for whom price is not the deciding factor, since the XG27WCMS costs less | MPG 321CURX | A 1700R curve at the highest price in the group |
| Buyers who want 1700R curve | MAG 321CUP | A 1700R curve |
| Buyers who put screen size first | AG493UCX | The largest screen size here (49 inches) |
Scroll sideways to see every column.
Key specs side by side
The XG27WCMS leads on refresh rate at 280Hz, ahead of the MPG 321CURX at 240Hz. "Not listed" marks panel where the XG27WCMS leaves the figure out.
| Monitor | Refresh rate | Resolution | Size | Panel |
|---|---|---|---|---|
| XG27WCMS | 280Hz | 2560x1440 (1440p) | 27 inches | Not listed |
| MPG 321CURX | 240Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
| MAG 321CUP | 165Hz | 3840x2160 (4K) | 32 inches | QD-OLED |
| AG493UCX | 120Hz | 5120x1440 | 49 inches | VA |
Scroll sideways to see every column.
By price at the time of writing
At our last check the cheapest pick, the XG27WCMS, sat in the $250 to $500 tier, 2 tiers in all up to the MPG 321CURX at $500 to $1000; Amazon prices move, so recheck before buying.
| Price tier | Monitors |
|---|---|
| About $250 to $500 | XG27WCMS |
| About $500 to $1000 | AG493UCX, MAG 321CUP, MPG 321CURX |
Frequently Asked Questions
Which has the highest refresh rate: the XG27WCMS or the MPG 321CURX?
The XG27WCMS tops refresh rate at 280Hz; the MPG 321CURX follows at 240Hz, 17% apart. The AG493UCX is at the other end of this group with 120Hz.
How does the MPG 321CURX compare with the AG493UCX on screen size?
Between the top two, it is 49 inches on the AG493UCX against 32 inches on the MPG 321CURX, a 53% difference. The XG27WCMS closes the ranking at 27 inches.
Is the MPG 321CURX worth paying more than the XG27WCMS?
On paper it adds screen size (32 inches against 27 inches). It does not win everywhere: the XG27WCMS still leads on refresh rate (280Hz). The XG27WCMS sat in the $250 to $500 tier and the MPG 321CURX in the $500 to $1000 tier when we checked, with 2 other picks between them; pay the difference only if screen size decides your purchase.
What makes the XG27WCMS the Fastest Refresh?
The label rests on the highest refresh rate here (280Hz). The MPG 321CURX is next on refresh rate at 240Hz, so this pick's 280Hz is 17% further out. It is aimed at competitive shooters where motion clarity matters most.
Do the XG27WCMS and the MPG 321CURX differ on resolution?
The XG27WCMS uses 2560x1440 (1440p); the MPG 321CURX and the MAG 321CUP use 3840x2160 (4K); the AG493UCX uses 5120x1440.
Beyond the specs, what sets the XG27WCMS and the MPG 321CURX apart?
The XG27WCMS: a curved 1440p panel overclocked to 280Hz. The MPG 321CURX: a 1700R curve. The MAG 321CUP: a 1700R curve.
Bottom Line
Our first pick is the XG27WCMS. Look at the MPG 321CURX for a 1700R curve at the highest price in the group, the MAG 321CUP for a 1700R curve and the AG493UCX for the largest screen size here (49 inches) if those matter more to you.
Check that your GPU has the port the monitor needs for its full refresh rate.