Our take
Optoma's GT750 combines native WXGA imaging, a 3,500 ANSI-lumen rating, short-throw placement, two HDMI inputs, and documented 3D support. That makes it distinct from conventional-throw 1080p theater projectors: its appeal is putting a large game or video image in a room with limited throw distance. The native panel remains 1280 × 800, so the model does not provide Full HD detail. The brochure dates to 2011, and it cannot tell a buyer how a particular lamp, fan, or input panel has aged.
A compact entertainment room where short-throw placement and documented 3D source support matter more than native Full HD detail.
It is not for native Full HD or 4K detail, built-in streaming apps, or a buyer requiring built-in battery operation that the checked source does not establish.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Optoma specifies a short-throw example of about 64.5 inches diagonal from 1 metre.
- The brochure gives a comparable 3,500 ANSI-lumen rating and native WXGA resolution.
- Two HDMI inputs and documented 3D modes support a game console and another external source.
What to weigh up
- WXGA 1280 × 800 is below Full HD and has less native detail for fine text or film subtitles.
- The listed 3D modes require separately available glasses; included accessories are unknown.
- Its 4,000-hour Eco lamp figure is an original rating, not the remaining life of a used unit.
The key details
| Model covered | GT750 |
|---|---|
| Image format | Native WXGA 1280 × 800 DLP |
| Rated light output | 3,500 ANSI lumens |
| Placement | Short-throw example: about 64.5-inch diagonal at 1 m; dual HDMI and 3D support |
Performance figures are manufacturer claims. Source checked October 10, 2026. Regional models and included accessories can differ.
What the features mean for you
Will short throw solve the room layout?
Optoma's brochure gives a practical example of roughly a 64.5-inch diagonal image at a 1-metre projection distance. That can help when a rear shelf or ceiling position would put a conventional projector too close to the viewer or in the way. Measure from the lens to the screen and use the brochure's image-size table for the exact diagonal you want. Short throw is not the same as ultra-short throw: the GT750 still needs clear space and careful alignment. A measurement should come before choosing a table, mount, or screen size.
Is WXGA enough for the intended image?
The GT750's native 1280 × 800 DLP grid is a widescreen computer format often described as HD Ready. It can display video and games, but the physical panel has fewer pixels than a native 1920 × 1080 Full HD model. That difference matters more as the picture grows or when small interface text and detailed maps fill the screen. Do not interpret support for a 720p or other input format as Full HD projection. Compare the expected image size, viewing distance, and game interface detail with the alternative models before deciding that its shorter throw is worth the lower native resolution.
What does its ANSI figure add?
Optoma labels the GT750 at 3,500 ANSI lumens, which gives the buyer a measurement basis that can be compared with other ANSI-rated models. This is still an original model rating rather than a measurement of an individual used example. Room light, picture mode, image size, screen, and lamp age affect the result. The brochure lists a 4,000-hour Eco-mode lamp life, but that is not a remaining-life guarantee. Ask for the lamp-hour display and see an image at the intended size before relying on the original brightness for gaming or group viewing.
How do the HDMI and 3D features affect setup?
The brochure lists two HDMI inputs and support for several 3D formats. Two direct inputs can make switching between a console and another player easier than moving cables, while 3D gives a compatible source a dedicated playback path. Optoma notes that glasses are separately available, so their presence in any current package is unverified. No integrated streaming platform is documented; use a console, laptop, or streaming device as the source. Confirm the source's signal mode, audio route, and cable reach before installing the projector at the measured short-throw position.
What should be inspected on an older GT750?
A product brochure describes the original model, not its present condition. Verify the exact GT750 label, lamp hours, startup, focus across the full image, color uniformity, cooling fan, HDMI inputs, remote, and power cable. Check that the 3D mode you need is supported by the source and that separate glasses can be obtained. The brochure's standard-mode noise figure is 27 dB, but a particular aging fan may sound different. A tagged exact-model search helps locate matching offers; it is not proof of an ASIN, included accessory, current stock, or seller condition.
What else to compare
For native Full HD with a documented 120 Hz gaming mode, compare Optoma HD39HDRx; for Full HD and stated Rec.709 coverage, compare BenQ HT1070A.
Before you buy
What is the GT750 native resolution?
Optoma specifies native WXGA at 1280 × 800 pixels, which is below native Full HD 1920 × 1080.
How close can it sit to the screen?
Optoma's brochure gives an example of about a 64.5-inch diagonal image at 1 metre; use its table for your target size.
Are 3D glasses included?
The brochure says compatible glasses are separately available, and it does not establish what any current used listing includes.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Optoma GT750 model brochure ↗ — checked October 10, 2026.
- Optoma GT750 brochure ↗ — checked October 10, 2026.
The decision
GT750 is a room-layout choice for short-throw WXGA entertainment, with its native resolution, glasses, and lamp condition kept visible.
Is it the right fit?
Check the exact model and today’s offers on Amazon.