Ultrawide~$1,499

HP Z40c G3

Half the pitch here is the ports: two Thunderbolt inputs with 100 W charging, gigabit Ethernet, a four-port hub, two 5 W speakers and a 13 MP webcam that pops out of the top bezel for Windows Hello. The panel is a gently curved 39.7-inch 5K2K, wide enough for two 2560×2160 windows side by side, each of them taller than a 1440p monitor. At 14 ms and 60 Hz it is slow by any gaming standard, which is the trade for the pixel count.

Approx. price

~$1,499

snapshot, not a live price

Sharpness

59ppd · sharp

text is clean; pixel edges show if you look for them

HDR tier

No HDR

the maker makes no HDR claim for this panel

Peak brightness

300nits claimed

no HDR certification

USB-C power

100 W

keeps a 14-inch machine charged under normal load

Max refresh

60 Hz

14 ms GtG rated

Port speed — can each input carry this panel?

HDMI 2.0· below the panel's maximum
DisplayPort 1.4· full speed
Thunderbolt (DP 1.4)· full speed

This panel needs 23.9 Gbps at 5120×2160, 60 Hz and 30 bits per pixel, with no DSC to fall back on.

Best for: Replacing a two-monitor desk with one curved panel and one cable

Specifications

Approx. price: ~$1,499
Type: Ultrawide
Screen size: 39.7 in
Resolution: 5120×2160
Aspect ratio: 21:9
Pixels per degree: 59 — sharp
Pixels per inch: 140
Panel: IPS
Finish: matte
Curvature: 2500R
Max refresh: 60 Hz
Response time: 14 ms GtG
VRR: None
HDR tier: No HDR
HDR certification: None
Peak brightness: 300 nits claimed
SDR brightness: 300 nits
Local dimming: None
Static contrast: 1,000:1
Colour gamut: 98% DCI-P3
Colour depth: 8-bit+FRC
HDMI: 1 × HDMI 2.0
DisplayPort: 1 × DisplayPort 1.4
DSC: Not supported
Port speed: 2 of 3 inputs at full speed
USB-C: Video in over USB-C
USB-C power: 100 W — 14-inch class laptop
Thunderbolt: Yes
KVM: Built in
USB hub: 4 ports
Speakers: Built in
Stand: height, tilt, swivel
VESA: 100x100
Weight: 31.5 lb
Released: 2022
$ per inch: $38
$ per megapixel: $136

Features

5120×2160 across 39.7 inches, equal to two 2560×2160 panels
2500R curve
Two Thunderbolt ports with 100 W charging
Gigabit Ethernet and a four-port USB-A hub
Pop-up 13 MP webcam with Windows Hello
Two 5 W speakers

What it does well

Each half of the screen is 2560×2160, so a side-by-side layout gives more vertical room than two 1440p monitors would
140 pixels per inch works out to 59 pixels per degree, which keeps text crisp on a panel this large
Thunderbolt with 100 W plus Ethernet and a four-port hub genuinely replaces a dock
98% DCI-P3 is a real colour claim for a business display
The webcam retracts into the bezel and supports Windows Hello face sign-in

What it gives up

14 ms response and 60 Hz — fine for documents, visibly smeary in anything that moves quickly
300 nits is dim by any current standard, and there is no HDR claim to go with it
31.5 pounds, and the stand does not rotate to portrait
A 2022 design at four figures, and HP's newer conferencing displays carry the Series 7 Pro name rather than Z

The two lists above come from the maker’s specifications and from published third-party measurements, not from owner reports. Where owner discussion has been read it appears in its own section below, so the two are never mistaken for each other.