The BenQ TK705i is a 4K projector designed for both gaming and home cinema, featuring motorized optical zoom, Google TV, and ultra-low 5ms input lag at 4K/60Hz. Launched in 2025, this premium living-room projector targets PS5, Xbox Series X, and PC gamers who want big-screen performance without sacrificing picture quality or gaming responsiveness.
Key Takeaways
- 3840 x 2160 4K resolution with 3,000 ANSI lumens brightness for well-lit rooms
- 5ms input lag at 4K/60Hz makes it suitable for competitive and casual gaming
- Motorized zoom distinguishes it from the cheaper TK705STi short-throw variant
- 98% Rec.709 color accuracy and Filmmaker Mode for film enthusiasts
- Google TV built-in for streaming without external devices
Why the BenQ TK705i Stands Out in the Gaming Projector Market
The BenQ TK705i combines brightness and responsiveness in ways most projectors cannot. At 3,000 ANSI lumens, it performs in ambient light—a critical advantage over darker alternatives that demand blackout rooms. The 5ms input lag at 4K/60Hz keeps gaming fluid, eliminating the ghosting and lag that plague slower projectors when you’re playing fast-paced titles.
What truly separates the TK705i is motorized optical zoom. Unlike its sister model, the TK705STi, this projector lets you adjust image size without moving the unit itself—a convenience feature that costs more but saves frustration in fixed installations. The motorized zoom pairs with Google TV for streaming, eliminating the need for external streaming devices or cables.
BenQ’s Cinematic Color and HDR-PRO technology deliver a claimed 98% Rec.709 color accuracy, supported by HDR10+, HDR, and HLG formats. Filmmaker Mode prioritizes fidelity over brightness, making it genuinely useful for film watching—not just a marketing label.
BenQ TK705i vs. TK705STi: Which Should You Buy?
The TK705STi is BenQ’s short-throw alternative with identical specs but no motorized zoom. If your projector placement is flexible or you do not mind manual adjustment, the STi saves money. The TK705i’s motorized zoom justifies the premium if you plan a permanent installation where convenience matters.
The previous-generation BenQ X3100i remains a strong competitor with excellent picture quality and gaming performance, though it lacks 4K/120Hz support and Dolby Vision—areas where the TK705i improves. For gamers and cinema enthusiasts willing to spend premium dollars, the TK705i represents a meaningful generational step forward.
Audio, Connectivity, and Build Quality
The TK705i includes two 8W speakers with adjustable bass, treble, and equalizer settings, though it lacks Dolby Atmos. For serious audio, external speakers remain necessary—the built-in audio handles casual viewing but not immersive soundtracks.
Connectivity is comprehensive. Two HDMI 2.1 ports (one with ALLM for automatic low-latency mode) handle gaming consoles, PCs, and streaming devices. USB-C DisplayPort with 30W power delivery supports laptops directly, while a 12V trigger enables motorized screen integration. The grey box design is compact at 3.8 kg and measures just 22.92 cm wide, making it portable for different rooms despite its premium positioning.
Real-World Performance and Brightness Trade-offs
YouTube reviewers praised the TK705i’s performance, with one noting impressive gaming responsiveness and picture quality. The 3,000 lumens brightness is sufficient for rooms with windows or ambient lighting, a genuine advantage over projectors designed for dark basements. Operating noise of 30 dB keeps the cooling fan quiet enough not to distract during movies.
The projector supports screens up to 150 inches, though real-world placement and throw distance will determine ideal size. In living rooms with typical seating distances, a 100–120 inch screen is more practical than maximum size.
Pricing and Value Proposition
The BenQ TK705i costs approximately £1,198.80 (including VAT) in the UK, with stock available and 3-5 working day delivery. This positions it as a premium option—not an impulse purchase, but a serious investment for dedicated gaming or cinema setups. The 24-month bring-in service warranty provides peace of mind for a device at this price tier.
Should You Buy the BenQ TK705i?
Buy the TK705i if you game on PS5 or Xbox Series X and want 4K visuals without lag, or if you watch films seriously and value color accuracy. The motorized zoom and Google TV integration justify the premium over cheaper alternatives. Skip it if you need portable flexibility—the weight and size suit permanent installations. Budget-conscious gamers should consider the TK705STi instead.
Does the BenQ TK705i support 4K/120Hz gaming?
The TK705i supports 4K/60Hz gaming with 5ms input lag via HDMI 2.1. It does not support 4K/120Hz, which limits next-generation console performance but remains sufficient for current-generation PS5 and Xbox Series X gaming.
Is the BenQ TK705i quieter than other gaming projectors?
Yes. At 30 dB operating noise, the TK705i is among the quietest in its class, making it suitable for shared living spaces where fan noise matters.
Can you use the BenQ TK705i without a separate streaming device?
Yes. Google TV is built-in, eliminating the need for external streaming boxes or sticks for Netflix, Disney+, and other apps.
The BenQ TK705i represents the modern premium projector: bright enough for real living rooms, fast enough for competitive gaming, and feature-rich enough to replace multiple devices. It is not the cheapest option, but for gamers and cinema lovers who value convenience and performance equally, it delivers on both fronts.
Where to Buy
£1,085 at Amazon | £1,481.98 at Amazon | £2,169.21 at Amazon
Edited by the All Things Geek team.
Source: What Hi-Fi?
