Optoma UHD35STx

Last updated: October 29, 2026

Optoma UHD35STx
3.8/5#21 of 24 in 4K projectors
3.8

A short throw 4K gaming projector for small rooms where the projector has to sit close to the screen.

  • 3,600 ANSIBrightness
  • 1920 x 1080 (1080p)Native resolution
  • lampLight source
  • NoneStreaming
  • 4 msInput lag
Check price at Amazon$1,299

Price checked October 29, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Throws a 100 inch picture from just over 3 feet away
  • Low lag at 1080p/240 for fast games
  • Long lamp life in Dynamic mode
Cons
  • No built-in streaming, so it needs a stick or console
  • Fixed lens with no zoom or lens shift makes placement exacting
  • Only a one-year warranty
  • Lamp dims over time and eventually needs replacing

How it scores

The rating comes from 8 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberUHD35STx
Picture
Brightness3,600 ANSI
Native resolution1920 x 1080 (1080p)
Picture resolution4K (pixel shift from 1920x1080)
DisplayDLP
Light sourcelamp
Light source life15,000 hours
HDRHDR10, HLG
Dynamic contrast1,000,000:1
Placement
ThrowShort throw (0.5:1)
Largest image300 in
AutofocusNo
Auto keystoneNo
Obstacle avoidanceNo
Auto screen fitNo
Optical zoomNone
Streaming and gaming
Built-in appsNone
Input lag4 ms
Top refresh rate240 Hz
HDMI ports2
Speakers10 W
Build
BatteryNone
Fan noise28 dB
Power320 W
Dimensions12.4 x 10.63 x 4.65 in (W x D x H)
Weight7.7 lb
Warranty1 years
Released2022-09

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