Is 240Hz at 4K realistic on this monitor?

Yes. The panel is rated for 240Hz at its native 3840 x 2160, so you need a GPU and cable that can carry that bandwidth. Use DisplayPort 1.4 or HDMI 2.1 and a certified cable.

Does it work with an Nvidia graphics card?

It lists FreeSync (AMD Adaptive Sync). Nvidia cards can usually run adaptive sync over DisplayPort, but G-Sync compatibility is not stated, so treat it as an AMD-first feature.

Is 250 nits bright enough?

It is on the dim side. In a dark or dim room the OLED contrast carries the picture, but in a bright room with sunlight the image will look washed out compared with brighter LCDs.

What can I connect to it?

Two HDMI 2.1 ports and two DisplayPort 1.4 ports, which covers a PC plus a PS5 or Xbox Series X at high refresh rates. It works with Windows and Mac.

Should I worry about burn-in?

QD-OLED can retain static images over long sessions, such as a fixed HUD or taskbar. Vary content, use a screensaver and check the warranty terms before buying.

How does it compare with other 27-inch 4K OLEDs?

On paper it matches them: 4K, 240Hz, QD-OLED, HDMI 2.1. The differences come down to firmware, brightness handling and burn-in coverage, which are worth checking before you pick.

Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor

Best price now

$609.99at Best BuyChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Best Buy

Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor

Best price now

$609.99at Best BuyChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Best Buy

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $609.99 at Best Buy on Nov 12.

Our take on the Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor

The Deco Gear 27 is a 26.5-inch flat QD-OLED gaming monitor running 4K (3840 x 2160) at up to 240Hz, with FreeSync adaptive sync and a 1,500,000:1 contrast ratio. Its 166 ppi panel and 90% NTSC gamut put it in the same class as the 27-inch 4K QD-OLEDs from Samsung, Alienware and MSI, and it matches them on the headline spec: four inputs, two of them HDMI 2.1. The 250-nit brightness figure is modest, so it suits dark-room play and HDR more than a bright, sunlit desk. Buyers who want top-tier motion clarity and OLED blacks at 4K should compare it closely with those rivals on firmware polish and burn-in warranty before choosing.

Best for4K PC gaming at high frame ratesCompetitive players who want 240Hz motion clarityDark-room HDR film and game viewingConsole owners with HDMI 2.1 devices

Pros

4K resolution at 240Hz on a 26.5-inch QD-OLED panel
Very high 1,500,000:1 contrast for deep blacks
166 ppi gives sharp text and fine detail
Two HDMI 2.1 and two DisplayPort 1.4 inputs
FreeSync adaptive sync for tear-free play
Wide 178-degree viewing angles and anti-glare coating

Cons

250 nits is dim for bright rooms and weak HDR highlights
No listed USB hub or KVM for multi-device setups
QD-OLED panels carry burn-in risk with static HUDs
FreeSync only, with no stated G-Sync certification

Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor prices at every store

Best BuyNew
In stock
$609.99Checked Nov 12
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Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor price history

Lowest price we've seen: $609.99 on Nov 12 at Best Buy. Tracked across 1 store since Nov 12.

About the Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor

This 27-inch gaming monitor uses a QD-OLED panel with a 3840 x 2160 (4K UHD) native resolution. The screen measures 26.5 inches, has a flat contour and a 16:9 aspect ratio, and its pixel density is 166 pixels per inch.

It refreshes at 240Hz and supports AMD FreeSync (Adaptive Sync). The contrast ratio is 1,500,000:1, brightness is 250 candela per square meter, and the color gamut covers 90 percent of NTSC.

It connects through 2 HDMI 2.1 ports and 2 DisplayPort 1.4 ports. It works with Windows and Mac.

Screen size: 26.5 inches
Panel type: QD-OLED
Resolution: 3840 x 2160 (4K UHD), native
Refresh rate: 240Hz
Sync technology: FreeSync (AMD Adaptive Sync)
Aspect ratio: 16:9
Contour: Flat
Pixel density: 166 pixels per inch
Brightness: 250 candela per square meter
Contrast ratio: 1,500,000:1
Color gamut: 90 percent NTSC
Viewing angle: 178 degrees horizontal, 178 degrees vertical
Display surface: Anti-glare
Video inputs: 2 x HDMI 2.1, 2 x DisplayPort 1.4
Compatibility: Windows, Mac

Specifications

Refresh Rate: 240Hz
Maximum Resolution: 3840 x 2160
Synchronization Technology: FreeSync (AMD Adaptive Sync)
Screen Size: 26.5 inches
OLED Technology: QD-OLED
Display Connector(S): 2 x HDMI 2.1, 2 x DisplayPort 1.4
Operating System Compatibility: Windows, Mac

Questions and answers

Is 240Hz at 4K realistic on this monitor?: Yes. The panel is rated for 240Hz at its native 3840 x 2160, so you need a GPU and cable that can carry that bandwidth. Use DisplayPort 1.4 or HDMI 2.1 and a certified cable.
Does it work with an Nvidia graphics card?: It lists FreeSync (AMD Adaptive Sync). Nvidia cards can usually run adaptive sync over DisplayPort, but G-Sync compatibility is not stated, so treat it as an AMD-first feature.
Is 250 nits bright enough?: It is on the dim side. In a dark or dim room the OLED contrast carries the picture, but in a bright room with sunlight the image will look washed out compared with brighter LCDs.
What can I connect to it?: Two HDMI 2.1 ports and two DisplayPort 1.4 ports, which covers a PC plus a PS5 or Xbox Series X at high refresh rates. It works with Windows and Mac.
Should I worry about burn-in?: QD-OLED can retain static images over long sessions, such as a fixed HUD or taskbar. Vary content, use a screensaver and check the warranty terms before buying.
How does it compare with other 27-inch 4K OLEDs?: On paper it matches them: 4K, 240Hz, QD-OLED, HDMI 2.1. The differences come down to firmware, brightness handling and burn-in coverage, which are worth checking before you pick.
Where is the Deco Gear 27" 4K UHD QD-OLED 240Hz Gaming Monitor cheapest?: At Best Buy, for $609.99, as of our latest check.