Size guide · 34 vs 40 vs 49

34″ vs 40″ vs 49″: which ultrawide is right for you?

Three sizes, three different shapes of screen. Here’s what each one actually gives you, measured from the factory spec sheets.

1.5×the width of the 34″ screen on the 49″, at almost exactly the same height (13.2″ vs 13.1″)
+2.2″more screen height on the 40″ 5K2K than on either the 34″ or the 49″
139pixels per inch on the 40″, vs about 110 on the 34″ and 49″
What matters

Three things to look for.

Width: how many windows

The 49″ screen is 47.1″ wide, two 27-inch QHD screens side by side. The 34″ is 31.4″, the 40″ is 36.6″.

Height: how much you see in each window

The 40″ 5K2K’s screen is 15.4″ tall with 2160 rows of pixels. The 34″ and 49″ are about 13.2″ and 1440 rows.

Desk space

With stands, the 34″ is 32.0″ wide, the 40″ is 37.3″ and the 49″ is 47.0″. Leave a few inches either side.

Our picks

Which Deco Gear to choose.

The everyday ultrawide

Deco Gear 34″ Business

From $219.99

  • 3440 × 1440 at 100 Hz on a 31.4″ × 13.1″ screen
  • 32.0″ wide and 8.4″ deep with its stand
  • Two HDMI and two DisplayPort inputs
Shop the 34″ Business
The tallest and sharpest

Deco Gear 40″ 5K2K

From $539.99

  • 5120 × 2160 at 139 PPI on a 36.6″ × 15.4″ screen
  • 75 Hz: made for detail work, not fast gaming
  • 90 W USB-C charging and a built-in KVM
Shop the 40″ 5K2K
The widest

Deco Gear 49″ 5K

From $599.99

  • 5120 × 1440 at 120 Hz on a 47.1″ × 13.2″ screen
  • Two 27-inch QHD screens’ worth of space
  • 65 W USB-C charging and a built-in KVM
Shop the 49″ 5K

How we chose: product details come from each model’s current factory spec sheet. Screen sizes are each panel’s active display area from the factory spec sheet; overall widths include the stand.

Questions

Answered.

Is a 49-inch monitor too big?

It depends on your desk. With its stand, the 49″ 5K is 47.0″ wide, so it suits desks about 55″ or wider. Its screen is no taller than a 34″ ultrawide’s (about 13.2″), so it doesn’t tower over you; it just goes wider.

Which is better for work, 40″ or 49″?

The 49″ gives more width for side-by-side windows. The 40″ 5K2K gives more height and sharper text (139 PPI), so each window shows more lines. Many people who work in long documents or code prefer the 40″.

Is a 34-inch ultrawide worth it over a 27-inch?

A 34″ ultrawide (3440 × 1440) is about a third wider than a 27-inch QHD screen at the same height, enough to keep two windows side by side comfortably.

Still deciding?

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Five questions, one match, and a life-size look on your desk.

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