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27 inch black gaming monitor on adjustable stand with thin bezels

HP Refurbished

HP OMEN 27S 27" FHD 165Hz Gaming Monitor 780G5AA-R

SKU CH-SM2Z-6REWZ MPN 780G5AA-R

A 27 inch FHD IPS gaming monitor with a 165 Hz refresh rate, 1 ms response time, 400 cd/m² brightness, FreeSync Premium and G-SYNC compatibility, plus height, pivot and tilt adjustment

  • Screen size27 in (68.6 cm)
  • Refresh frequency165 Hz
  • Pixel response time1 ms
  • Image brightness400 cd/m2
  • Variable refresh rateFreeSync Premium & G-Sync Compatible
  • Viewing angles178° (H) / 178° (V)
  • Smooth competitive play at 165 Hz refresh rate
  • Crisp 27" Full HD IPS panel at 1920 x 1080
  • Tear-free motion via FreeSync Premium and G-Sync Compatible
  • Flexible ergonomics with height, pivot and -5 to +20° tilt
  • Wide 178° viewing angles and 400 cd/m² brightness

27" FHD 165 Hz gaming monitor

The HP OMEN 27S delivers a 1920 x 1080 resolution on a 27-inch IPS panel with a 165 Hz refresh rate and a 1 ms response time. It targets competitive players who need fluid motion at full HD without stepping up to higher resolutions. Adaptive sync works with both FreeSync Premium and G-Sync Compatible modes.

Sustained 165 Hz clarity

At the full 165 Hz the panel maintains 400 cd/m² brightness and a 1000:1 contrast ratio across extended sessions. The 16.7 million colour palette and 178° viewing angles stay consistent without the dimming or ghosting that can appear on cheaper panels during long matches. Height, pivot and tilt adjustments let you lock the screen into a fixed ergonomic position for hours of play.

HDMI and DisplayPort bandwidth limits

The 165 Hz signal at 1920 x 1080 fits comfortably inside standard HDMI and DisplayPort bandwidth, so no compression or chroma subsampling is required. FreeSync Premium and G-Sync Compatible both operate over those same cables without extra hardware. Buyers who want 240 Hz or higher resolutions will need a different panel, as this model tops out at the specified 165 Hz rate.

How it compares

Measured against everything we stock in Monitors for Gamers, at today’s prices. Recalculated every night.

Price $111.99
Cheaper than about 81% of the 839 comparable items (median $189.99).
Screen size 27 in (68.6 cm)
Typical for this category: the median of 814 items is 27 in.
Refresh frequency 165 Hz
Lower than about 70% of the 735 comparable items (median 180 Hz).

Specifications

Product
Brand nameHP
Model nameOMEN 27S
Part number780G5AA-R
Case colorBlack
Display
Screen size27 in (68.6 cm)
Refresh frequency165 Hz
Pixel response time1 ms
Image brightness400 cd/m2
Variable refresh rateFreeSync Premium & G-Sync Compatible
Viewing angles178° (H) / 178° (V)
Screen ratio16:9
Contrast1000:1
Colors displayed16.7 Million
Audio & video
Integrated speakersNo
Power
Power supply92 W
Size & build
VESA mounting pattern100 mm x 100 mm
Shipping weight8.68 kg
Package size615 × 523 × 224 mm

Questions about this item

How much power does the 92 W supply draw when the monitor runs at 165 Hz all day?

The monitor is rated at 92 W, so sustained use at 165 Hz will draw up to that level from the wall outlet.

Which video cables must I already have to connect the OMEN 27S to my PC?

You need an HDMI cable or a DisplayPort cable; the monitor has both inputs but no cables are included.

Can I mount this 27" screen on my existing 100 mm VESA arm?

Yes, the 100 mm x 100 mm VESA pattern matches standard monitor arms and wall mounts.

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