Our take
The Optoma GT750E is a useful legacy option when a room needs short-throw placement and a source-labeled ANSI output. Optoma's datasheet lists native WXGA, a 0.72:1 throw ratio, and 3,000 ANSI lumens, with two HDMI inputs and legacy connections. Its lamp condition is unit-specific, and the short-throw lens should not be mistaken for a 0.25:1 or other UST design.
A fixed gaming or home-viewing room that needs short-throw placement and documented ANSI output.
It is not the right choice for native Full HD or 4K detail, battery viewing, built-in apps, or a wall-close UST position.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Optoma documents 3,000 ANSI lumens for the exact GT750E model.
- A 0.72:1 throw ratio supports short-throw placement in a shallower room.
- Dual HDMI and multiple analog inputs broaden source compatibility.
What to weigh up
- The WXGA panel is below native Full HD.
- The 0.72:1 lens is short-throw but not an ultra-short-throw ratio.
- A lamp-based unit needs an exact-condition and lamp-hour check.
The key details
| Model covered | GT750E |
|---|---|
| Image format | Native WXGA 1280 × 800 |
| Rated light output | 3,000 manufacturer-rated ANSI lumens |
| Placement | 0.72:1 short throw; lamp source and two HDMI inputs |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
Short throw can solve a room-depth constraint
Optoma's GT750E sheet lists a 0.72:1 throw ratio. That is short throw, which can help when a conventional projector would cast a shadow or need more distance behind the viewer. It is not the same as an ultra-short-throw design that sits immediately against a wall. Measure the lens-to-screen distance and target image width before choosing a mount. Confirm the actual ratio against the installed position, and avoid assuming that any short-throw label fits every shallow room. If the projector must sit on a console below the screen, compare a model with a documented UST ratio instead.
The WXGA grid supports detail between XGA and Full HD
The manufacturer datasheet identifies the GT750E as native WXGA in a 16:10 format. This gives more horizontal image pixels than XGA, while remaining below Full HD 1920 × 1080. The format can suit games, slides, and video when the source content matches the screen, but small text will not have the same native detail as a Full HD projector. Match the image to its viewing distance and content. Higher-resolution input support does not change the WXGA pixel grid, so choose another model if native Full HD detail is a requirement.
An ANSI figure is documented, but not a unit measurement
Optoma rates the GT750E at 3,000 ANSI lumens. This is a source-labeled manufacturer figure and can be compared with other ANSI-rated model claims, unlike unqualified lumen values. It does not guarantee the output of an older projector offered today: lamp age, mode, dust, and unit condition matter. Check the lamp-hour counter and inspect the image after warm-up at the screen size and ambient light you expect. Keep the distinction clear between Optoma's model rating and a measurement of one used unit.
Inputs support external devices, not built-in apps
The datasheet lists two HDMI inputs, VGA, S-video, composite video, and 10 W stereo audio. That gives the GT750E a practical connection set for newer HDMI sources and some legacy devices. It does not document a streaming-app platform. If using a laptop, game console, or streaming stick, confirm video resolution, audio route, cable length, and copy-protection compatibility on the actual projector. An external source can make the setup work, but integrated apps should not be assumed from the HDMI connections or the projector's home-use role.
Lamp life and placement need exact-unit attention
The GT750E uses a lamp light source according to Optoma's datasheet. A lamp is replaceable, but the source does not establish the remaining life or condition of a particular used unit. Ask for hours and service history, check filter and ventilation, and look for brightness or color changes after warm-up. The projector's 0.72:1 lens also needs a room measurement; short throw does not eliminate image offset, focus, or screen-height calculations. Verify any remote, cables, and mounting hardware separately instead of treating the source-row bundle as a confirmed offer.
Who should shortlist it
Choose the GT750E if short-throw geometry and an ANSI-labeled output matter more than modern resolution or software. Compare a native Full HD model for finer detail, a UST model for a very close wall position, and a laser model if avoiding lamp replacement is important. Optoma's data establishes the model's output, format, inputs, and throw; it does not establish current stock, present support, or the condition of an old unit. Check the model label and lamp, calculate the image position, and test all required inputs before treating it as a replacement.
What else to compare
For native Full HD and a traditional home-theater image, compare newer home models. For console placement directly below a screen, compare an explicitly documented ultra-short-throw projector.
Before you buy
Is the GT750E ultra-short throw?
Optoma lists a 0.72:1 throw ratio, which is short throw but not the close-wall UST ratio used here.
What brightness figure does Optoma specify?
The GT750E datasheet lists 3,000 ANSI lumens as a manufacturer-rated model specification.
Does the GT750E have streaming apps?
The datasheet lists external video inputs, not an integrated streaming-app platform.
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 GT750E manufacturer datasheet ↗ — checked October 11, 2026.
- Optoma-authored GT750E datasheet; exact model specifications ↗ — checked October 11, 2026.
The decision
The GT750E's strongest fit is a measured short-throw room needing an ANSI-rated model claim. Its WXGA detail, lamp condition, and lack of documented apps are clear tradeoffs.
Is it the right fit?
Check the exact model and today’s offers on Amazon.