Optoma UHD35STx Projector Review
Optoma UHD35STx Projector Review 2025: A Stunning 4K Short-Throw Experience
Optoma UHD35STx Projector Review – Looking for a projector that delivers jaw-dropping 4K visuals without needing a football field’s worth of space? The Optoma UHD35STx might just be your ticket to home theater nirvana. In this Optoma UHD35STx Projector Review, we’ll dive deep into its specs, performance, and whether it’s worth your hard-earned cash in 2025. Spoiler alert: It’s a beast. But let’s break it down properly.
What Makes the Optoma UHD35STx Special?
- Short-Throw 4K Brilliance
Unlike traditional projectors that need miles of distance, the UHD35STx is a short-throw projector, meaning you can place it just a few feet from your screen and still get a massive, crisp image. Perfect for small spaces! - 4K UHD with HDR10
With true 4K resolution (3840 x 2160) and HDR10 support, colors pop, blacks are deep, and details are razor-sharp. Whether you’re watching Dune or playing Cyberpunk 2077, this thing delivers.

Optoma UHD35STx Key Specifications
Here’s a quick rundown of its 2025 specs:
Brand | Optoma |
Additional Features | 4K UHD, Short Throw Projection |
Connectivity Technology | USB, HDMI |
Native Resolution | 3840 x 2160 |
Display Resolution Maximum | 3840 x 2160 Pixels |
Display Type | DLP |
Form Factor | Portable |
Mounting Type | Tabletop Mount |
Brightness | 3600 lumen |
Color | White |
Wattage | 310 watts |
Controller Type | Remote Control |
Compatible Devices | Gaming Console, Television |
Contrast Ratio | 1000000:1 |
Maximum Throw Distance | 3.3 Meters |
Light Source Operating Life | 10000 Hours |
Maximum Image Size | 300 Inches |
Lamp Wattage | 240 Watts |
Voltage | 240 Volts |
Hardware Connectivity | USB, HDMI |
Control Method | Remote |
Minimum Throw Distance | 0.4 Meters |
Minimum Image Size | 36.43 Inches |
Video Encoding | HEVC |
Picture Quality Enhancement Technology | UltraDetail technology |
Picture Quality: Is It Really That Good?
- 4K Clarity & Color Accuracy
The UHD35STx uses TI’s latest DLP chipset and a 6-segment color wheel, ensuring vibrant, true-to-life colors. Even in well-lit rooms, 3,600 lumens keep the image bright and punchy. - HDR10 & Dynamic Black
HDR content looks stunning, with deep shadows and brilliant highlights. The 1,000,000:1 contrast ratio ensures no detail gets lost in the dark, perfect for horror movies like The Nun III.

Gaming Performance: Lag-Free & Smooth
- Low Input Lag (16ms)
Gamers, rejoice! With 16ms input lag in 4K @ 60Hz, fast-paced games like Call of Duty: Black Ops 6 feel responsive. No blur, no ghosting—just smooth action. - 240Hz Refresh Rate (1080p)
Drop the resolution to 1080p, and you unlock a 240Hz refresh rate. Competitive gamers will love this for Fortnite or Valorant.
Setup & Installation: Easy or a Hassle?
- Ultra Short Throw Flexibility
Place it just 5 inches from the wall for a 100-inch screen! No more ceiling mounts or awkward furniture rearrangements. - Keystone Correction & Lens Shift
Digital vertical keystone correction helps align the image if the projector isn’t perfectly level. No lens shift, though, so placement needs to be precise.
Sound Quality: Do You Need External Speakers?
- Built-in 10W Speaker
It’s… okay. Fine for casual viewing, but for movies or gaming, you’ll want a soundbar or surround system.
Compare with similar items
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Optoma UHD35STx Short Throw True 4K UHD | ViewSonic PX749-4K UHD 4K | BenQ X500i | True 4K | |
Price | $1,549.00 | $1,269.99 | $1,999.00 |
View Product | View Product | View Product | |
Hardware Interface | HDMI, USB | USB 2.0, USB-C, Ethernet, HDMI | HDMI |
Display Resolution | 3840 x 2160 | 3840 x 2160 | 3840 x 2160 |
Brightness | 3600 lumen | 4000 lumen | 2000 lumen |
Max Throw Distance | 3.3 meters | 9.76 meters | 10 feet |
Controller Type | Remote Control | Remote Control, Button Control | Button Control |
Maximum image size | 300 inches | 300 inches | 300 inches |
Pros & Cons: The Quick Verdict
- ✔ Pros
✅ Stunning 4K HDR visuals
✅ Ultra short-throw convenience
✅ Excellent for gaming (low lag, 240Hz)
✅ Bright enough for daytime use - ✖ Cons
❌ Built-in speaker is weak
❌ No lens shift (placement must be precise)
❌ Lamp-based (laser competitors last longer)
Who Should Buy the Optoma UHD35STx?
- Gamers who want 4K + high refresh rates.
- Movie buffs are craving HDR cinematic quality.
- Small living spaces need a short-throw solution.
Final Verdict: Worth It in 2025?
Absolutely. The Optoma UHD35STx is a stellar 4K short-throw projector with gaming chops, vibrant HDR, and easy setup. If you want a big-screen experience without the hassle, this is a top pick.
FAQs
- Can the Optoma UHD35STx be used in daylight?
Yes! Its 3,600 lumens handle ambient light well, though a darker room always improves contrast. - Does it support 3D movies?
No, the UHD35STx does not have 3D playback capabilities. - How often do I need to replace the lamp?
In Eco Mode, the lamp lasts up to 15,000 hours—that’s over 4 years at 8 hours/day! - Is this projector good for sports?
Yes! Fast motion is handled smoothly, and the high brightness keeps games looking sharp. - Can I mount it upside down?
Yes, it has ceiling mount compatibility, but you’ll need to adjust keystone settings.

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