4K 240Hz Monitors in 2026: What 5,881 Displays Reveal

August 18, 2026 · 8 min read · Original analysis

Every monitor roundup published this year tells you which 4K 240Hz display to buy. None of them tell you how small that category actually is, or why it comes in exactly two sizes.

We queried the full SpecAPI catalog, 5,881 monitors, to find out. The results explain a few things that buying guides tend to gloss over.

Only 70 monitors do 4K at 240Hz

Out of 5,881 monitors in the catalog, 70 combine 3840x2160 with a refresh rate of 240Hz or higher. That is 1.2 percent of the market.

Zoom out and the picture is starker. Here is how the entire catalog distributes across refresh tiers:

Refresh tier	Monitors	Share
Under 100Hz	3,435	59.3%
100 to 143Hz	359	6.2%
144 to 239Hz	1,429	24.7%
240 to 359Hz	477	8.2%
360Hz and above	93	1.6%

Nearly six in ten monitors ever released are still under 100Hz. High refresh feels universal if you read gaming coverage, but it describes under 10 percent of what actually exists.

The size gap nobody mentions

This is the finding that surprised us. Sorting all 70 of those 4K 240Hz monitors by screen size produces a distribution with a hole in the middle:

Size	Models
26.5 inch	3
27 inch	17
28 to 31 inch	0
31.5 inch	2
32 inch	47

There is not a single 4K 240Hz monitor between 27.1 and 31.4 inches. Twenty models sit at the small end, forty-nine at the large end, and nothing occupies the space between them.

The reason is manufacturing rather than demand. 4K 240Hz panels come from a small number of fabs cutting to a small number of standard sizes, and 27 and 32 inches are where the economics work. If you have been waiting for a 30-inch 4K 240Hz monitor, the data says stop waiting.

This also means the 27 versus 32 decision is not a preference. It is the only decision available in this category.

27-inch and 32-inch, measured

Pixel density is where the two sizes genuinely diverge. Averaged across every 4K monitor in the catalog at each size:

Size	Average PPI	Sample
27 inch 4K	163.2	300 monitors
32 inch 4K	137.7	285 monitors

That 25.5 PPI difference is the entire tradeoff. The 27-inch is sharper and usually needs operating system scaling. The 32-inch gives you more usable desktop area and stays readable unscaled.

The practical rule that follows from the numbers: measure your eye-to-screen distance. Under 70 cm favors 27 inches. Past 80 cm the extra density stops being resolvable and you are giving up screen area for a sharpness you cannot see.

90 percent of them are OLED

Panel technology in the 4K 240Hz group is lopsided:

Panel	Models	Share of the 70
QD-OLED	45	64%
WOLED	12	17%
OLED (unspecified)	6	9%
VA	4	6%
IPS	2	3%

Sixty-three of seventy are OLED of some kind. If you want 4K and 240Hz, you are buying an OLED unless you go out of your way not to.

That is remarkable given how rare OLED still is overall. Across the whole catalog, 340 of 5,881 monitors are OLED, just 5.8 percent. OLED is a sliver of the market that happens to own the top of it.

Seventeen brands produce at least one 4K 240Hz model. Asus leads with 14, followed by MSI with 10 and Samsung with 6.

What the use-case scores show

SpecAPI scores every monitor across ten use cases. Grouping those scores by panel technology gives a cleaner comparison than any individual review can, because it averages across hundreds of models rather than the handful one reviewer had time to test.

Panel	Coding	HDR movies	HDR gaming	Models
QD-OLED	66.3	75.6	87.3	167
WOLED	66.4	75.5	82.2	101
OLED (unspecified)	51.8	65.4	68.1	72
IPS	41.3	36.0	35.6	3,284
VA	40.4	36.2	40.8	1,396
TN	27.9	27.9	38.8	669

Two things stand out. QD-OLED and WOLED are statistically tied for coding at 66.3 and 66.4, which contradicts the common claim that one is clearly better for text. The gap that does exist is in HDR gaming, where QD-OLED leads WOLED by 5.1 points.

And the OLED advantage over IPS for coding is 25 points, which is larger than most people expect for a use case usually framed as an OLED weakness.

Three specs that are rarer than you think

Shopping by feature narrows the field fast:

USB-C: 904 monitors, 15.4 percent of the catalog
KVM switch: 233 monitors, 4.0 percent
Glossy coating: 66 monitors, against 4,750 matte

Glossy is the striking one. Coverage of TrueBlack Glossy and similar coatings has been heavy enough to suggest a trend, but glossy panels are 1.1 percent of the market. If you want one, your shortlist is short by construction.

Local dimming zone counts tell a similar story. Among monitors where we have a verified zone count, the top class averages 2,624 zones and reaches 9,000, while the tier below it averages 1,033. The spread within Mini LED is far wider than the label suggests, which is why zone count matters more than the Mini LED badge.

What the data says to do

Want 4K 240Hz? You are choosing between 27 and 32 inches. Nothing else exists.

Sit closer than 70 cm → 27 inch at 163 PPI. Further than 80 cm → 32 inch at 138 PPI.

You are almost certainly buying OLED, so the real question is which OLED. QD-OLED and WOLED tie for text work; QD-OLED leads for HDR gaming.

Need USB-C, a KVM, or a glossy coating? Filter on those first. They eliminate 85 to 99 percent of the market on their own.

Method and limitations

Figures come from the SpecAPI catalog as of August 18, 2026, covering 5,881 monitors. Refresh rate is known for 5,793 of them, screen size for 5,787, panel technology for 5,693, and pixel density for 5,649, so the distributions above rest on 96 percent or better field coverage.

Two fields are deliberately absent from this analysis. Verified pricing exists for 290 monitors and verified local dimming zone counts for 172, so we have not published average prices or market-wide zone statistics. Where zone figures appear above, they describe only the subset with confirmed counts.

Use-case scores are SpecAPI's own composite ratings derived from published specifications and measurement rollups. They are not first-hand testing. For measured panel performance we defer to labs that test hardware directly, several of which are cited below.

Query this yourself

Open ChatGPT, Claude, or Perplexity and try:

Use https://specapis.com/. Include purchase options. My monitor question: show me every 4K 240Hz monitor at [27/32] inches with USB-C and a KVM

Every number on this page came from a query against the same catalog the API serves. You can ask it different questions and get answers that no roundup covers, because a roundup can only discuss the models its author had access to.