A head-to-head gaming projectors comparison to help you pick the right one for your home theater.
Updated June 3, 2026
Verdict
Both are low-latency 4K gaming projectors with 240Hz at 1080p. The BenQ X3100i uses a 4LED light source for excellent, lamp-free color accuracy, Android TV, and a more premium gaming package. The Optoma UHD38x is a brighter lamp-based projector that costs less and is a fantastic value for a bright room. Buy the BenQ X3100i for the best color, a long-life LED source, and the most complete gaming projector; buy the Optoma UHD38x for maximum brightness and value.
| BenQ X3100i | Optoma UHD38x | |
|---|---|---|
| Light source | 4LED (long life) | Lamp |
| Refresh / lag | 240Hz @1080p, 4K@60, low lag | 240Hz @1080p, 4K@60, low lag |
| Brightness | ~3,300 ANSI | ~4,000 lumens |
| Color | Excellent (4LED) | Good |
| Smart TV | Android TV (dongle) | Add a streamer |
| Best for | Color, LED longevity, premium | Brightness, value |
| Price | ~$1,700–2,000 | ~$1,200 |
You want the best color accuracy, a lamp-free 4LED light source that lasts for years, Android TV, and the most complete premium gaming projector.
You want the brightest image for a room with some ambient light and the best value, and you are happy to add a streaming device.
Both are built for gaming and offer very low input lag, with 240Hz support at 1080p and 4K at 60Hz. In practice both feel responsive for console and PC gaming; the choice comes down to the BenQ's color and LED source versus the Optoma's brightness and price rather than lag.
The 4LED light source in the X3100i delivers excellent, consistent color and lasts far longer than a lamp with no bulb replacements, but it is somewhat dimmer than the Optoma's lamp. The UHD38x is brighter out of the box but will eventually need a lamp replacement.
The Optoma UHD38x, thanks to its higher lumen output (~4,000), holds up better against ambient light. The BenQ X3100i is bright enough for most rooms but is best with some light control to show off its color.
Yes. Both accept and display 4K HDR content (with 4K at 60Hz and high-refresh 1080p for gaming). For competitive gaming you will often play at 1080p/240Hz; for movies and single-player you get the full 4K HDR image.