Our take
The BenQ MX620ST is an XGA short-throw projector for classrooms and meeting rooms. BenQ lists native 1024 × 768 resolution, 3000 ANSI lumens, a lamp, and a 10-watt speaker; its announcement describes a 100-inch image at about 1.8 m. That gives a useful close-placement reference, though the exact room still needs measurement. The 4:3 panel suits older slide and document layouts better than widescreen video. Optional wireless presentation accessories do not amount to built-in streaming. Check lamp hours, lens focus, and all inputs on a used unit, and confirm the installed distance against the manual.
Boardroom or classroom projection when the short-throw distance, 4:3 materials, and replaceable lamp suit the room.
It is not for native Full HD or 4K detail, battery projection, integrated streaming apps, or a room that requires a verified ultra-short-throw ratio.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- BenQ lists native XGA 1024 × 768 and a 4:3 image format.
- The 3000-lumen rating is explicitly ANSI, with a separate ECO mode.
- BenQ describes short-throw use and a 100-inch image from about 1.8 m.
What to weigh up
- The native XGA image has less detail than WXGA or Full HD home models.
- The replaceable lamp needs age and condition checks on a used projector.
- Wireless presentation requires a separate BenQ accessory; no app platform is documented.
The key details
| Model covered | MX620ST |
|---|---|
| Image format | Native XGA 1024 × 768, 4:3 |
| Rated light output | 3000 ANSI lumens |
| Placement | Short-throw lens; BenQ cites 100 inches from about 1.8 m |
Performance figures are manufacturer claims. Source checked October 8, 2026. Regional models and included accessories can differ.
What the features mean for you
XGA and 4:3 match many classroom documents
BenQ identifies the MX620ST's native resolution as XGA 1024 × 768, with a 4:3 native aspect ratio. That format can use the full frame for older presentation files, spreadsheets, and classroom material created in 4:3. It is lower resolution than WXGA, Full HD, or 4K cinema models, so detailed widescreen video will not be its strongest documented match. Check the aspect ratio of the content and board before choosing. A compatible 1080p input is not the same as native Full HD. The model fits when room role and source format matter more than maximizing pixels for movie viewing.
The short-throw lens can reduce room depth
BenQ describes the MX620ST as a short-throw model, and its announcement gives a 100-inch image from approximately 1.8 m. That provides a concrete starting point when a meeting table, board, or front wall leaves limited distance. It is not enough to skip measurement: image size, projection angle, mount position, and focus still need to match the room. The manual should be used to map the exact screen width to lens distance. The product sources do not state a ratio in the saved packet, so this recommendation keeps the manufacturer's short-throw wording without inventing a number. If the wall is extremely close, compare a documented UST design.
ANSI output helps compare presentation models
BenQ specifies 3000 ANSI lumens for the MX620ST. This measurement basis can be compared with other models that explicitly use ANSI, unlike output claims stated only as generic lumens. The rating does not tell how bright a particular used unit remains; lamp hours, mode, dust, and room light matter. The manual describes ECO mode, so note which setting a seller used if the image appears dim. For a daytime board or meeting room, measure the screen size and consider window light before relying on any single figure. The ANSI value is a clear product specification, not a guarantee of performance from a worn lamp.
Use the wired ports for a controlled source chain
The MX620ST manual documents HDMI and several business and legacy inputs, plus a built-in 10-watt speaker. These ports can connect a laptop, document source, or presentation system. BenQ describes optional wireless presentation accessories, but that is separate equipment and does not establish streaming apps inside the projector. Decide whether an external dongle or computer will provide content, and check the exact accessory and software requirements before planning wireless use. The internal speaker may be adequate for a small meeting, while a larger room can need separate audio. Confirm HDMI and audio operation on the particular unit before purchase.
Lamp and accessory condition matter
BenQ documents a replaceable lamp and a 190-watt source, so remaining lamp hours and replacement history matter when evaluating a used MX620ST. Inspect the lamp cover, cooling path, fan, focus across the board, zoom behavior, remote, and each input. The candidate's historical listing does not confirm whether a wireless adapter, mount, or other parts were included, and the built-in short-throw lens alone does not establish the whole room installation. Compare the Acer S5201M if a closer 0.61:1 lens and SmartPen functions would help, or the InFocus IN3106 for WXGA at conventional throw. Choose the BenQ when short placement and 4:3 documents align.
What else to compare
Compare Acer S5201M for an even closer classroom lens and SmartPen system, or InFocus IN3106 for native WXGA at conventional throw.
Before you buy
Is the MX620ST native Full HD?
No. BenQ specifies native XGA at 1024 × 768 pixels in a 4:3 aspect ratio.
Does 3000 lumens mean ANSI?
BenQ's product material states 3000 ANSI lumens for the MX620ST.
How close can it sit to a 100-inch screen?
BenQ describes about 1.8 m for a 100-inch image; use the model manual to confirm your exact geometry.
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.
- BenQ MX620ST user manual ↗ — checked October 8, 2026.
- BenQ MS619ST/MX620ST/MW621ST user manual, MX620ST specifications ↗ — checked October 8, 2026.
- BenQ MX620ST product announcement ↗ — checked October 8, 2026.
The decision
The MX620ST fits a measured classroom or meeting room when short-throw placement, XGA documents, and 3000 ANSI lumens meet the need.
Is it the right fit?
Check the exact model and today’s offers on Amazon.