HP Series 7 Pro 734pm vs HP Z40c G3
The HP Z40c G3 is 13 pixels per degree sharper at a desk distance — 59 against 46, and both sit in the sharp band. Every other published specification for both is in the table, with the rows where they differ tinted.
HP
HP Series 7 Pro 734pm
46ppd · sharpAccepts an HDR signal~$1,229
Everything a hybrid-work desk usually needs three separate boxes for is inside this one: a Thunderbolt 4 dock with 100 W of charging and gigabit Ethernet, a pop-up 5 MP HDR webcam, a four-speaker Poly Studio array with dual noise-cancelling microphones, and a KVM that swaps keyboard and mouse between two machines.
Best for: One cable replacing a dock, a webcam and a speakerphone on a hybrid desk
- HDMI 2.0· below the panel's maximum
- DisplayPort 1.4· full speed
- Thunderbolt (DP 1.4)· full speed
HP
HP Z40c G3
59ppd · sharpNo HDR~$1,499
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.
Best for: Replacing a two-monitor desk with one curved panel and one cable
- HDMI 2.0· below the panel's maximum
- DisplayPort 1.4· full speed
- Thunderbolt (DP 1.4)· full speed
| Specification | HP Series 7 Pro 734pm | HP Z40c G3 |
|---|---|---|
| Approx. price | ~$1,229 | ~$1,499 |
| Type | Ultrawide | Ultrawide |
| Screen size | 34 in | 39.7 in |
| Resolution | 3440×1440 | 5120×2160 |
| Aspect ratio | 21:9 | 21:9 |
| Pixels per degree | 46 — sharp | 59 — sharp |
| Pixels per inch | 110 | 140 |
| Panel | IPS | IPS |
| Finish | matte | matte |
| Curvature | 1900R | 2500R |
| Max refresh | 120 Hz | 60 Hz |
| Response time | 5 ms GtG | 14 ms GtG |
| VRR | FreeSync | None |
| HDR tier | Accepts an HDR signal | No HDR |
| HDR certification | DisplayHDR 400 | None |
| Peak brightness | 400 nits claimed | 300 nits claimed |
| SDR brightness | 400 nits | 300 nits |
| Local dimming | None | None |
| Static contrast | 2,000:1 | 1,000:1 |
| Colour gamut | 98% DCI-P3 | 98% DCI-P3 |
| Colour depth | 8-bit | 8-bit+FRC |
| HDMI | 1 × HDMI 2.0 | 1 × HDMI 2.0 |
| DisplayPort | 1 × DisplayPort 1.4 | 1 × DisplayPort 1.4 |
| DSC | Not supported | Not supported |
| Port speed | 2 of 3 inputs at full speed | 2 of 3 inputs at full speed |
| USB-C | Video in over USB-C | Video in over USB-C |
| USB-C power | 100 W — 14-inch class laptop | 100 W — 14-inch class laptop |
| Thunderbolt | Yes | Yes |
| KVM | Built in | Built in |
| USB hub | 7 ports | 4 ports |
| Speakers | Built in | Built in |
| Stand | height, tilt, swivel | height, tilt, swivel |
| VESA | 100x100 | 100x100 |
| Weight | 25 lb | 31.5 lb |
| Released | 2025 | 2022 |
| $ per inch | $36 | $38 |
| $ per megapixel | $248 | $136 |
HP Series 7 Pro 734pm: what it gives up
- $1,229 against the $700-800 the 34-inch gaming ultrawides here cost — the dock, camera and KVM are what the difference buys
- FreeSync with no certified tier above it, so the 120 Hz shows up in scrolling and pointer feel rather than in games
- DisplayHDR 400 with no dimming zones — it accepts an HDR signal and cannot show one
- 25 pounds with the stand, and the stand does not pivot
- 109 pixels per inch works out to 46 pixels per degree, sharp but a step below a 4K panel of the same height
HP Z40c G3: 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
Full specifications: HP Series 7 Pro 734pm · HP Z40c G3