BenQ TK700STi vs Optoma UHD55|Gaming Projector Comparison

BenQ TK700STi and Optoma UHD55 are both popular 4K gaming projector choices. But they have differences in terms of brightness, contrast ratio, input lag, and price.

BenQ TK700STi is competitive in terms of price and input lag while Optoma UHD55 is better in image contrast and brightness. See more differences between the two projectors by means of the side-by-side comparison below.

Product Name

BenQ TK700STi

Optoma UHD55

Product Image BenQ TK700STi Optoma UHD55
Price $1,699.00 $1,799.00
Our Rating 8.3 8.5
Brand BenQ Optoma
Category projector projector

Optical Parameters

BenQ TK700STiOptoma UHD55
Brand Brand BenQ Optoma
Brand Model Brand Model BenQ TK700STi Optoma UHD55
Brightness (ANSI lumens) Brightness (ANSI lumens) 3,000 ANSI Lumens 3,600 ANSI lumens
Display Technology Display Technology DLP DLP
Standard Resolution Standard Resolution 3840x2160 3480 x 2160
Maximum Supported Resolution Maximum Supported Resolution 3840x2160 3480 x 2160
Image Contrast Ratio Image Contrast Ratio 10,000:1 Dynamic Contrast Ratio: 1,200,000:1
Throw Ratio Throw Ratio 0.90:1-1.08:1 1.21:1 - 1.59:1
Keystone Correction Keystone Correction Horizontal, Vertical, ± 40 degrees
Horizontal & Vertical
Lamp Life Lamp Life 4,000 hours / 15,000 hours (Eco) 4,000 hours / 15,000 hours (Eco)
Lamp Type Lamp Type 240W Metal Halide bulb Metal Halide bulb
Focus technology Focus technology manual focus manual focus

Projection Parameters

BenQ TK700STiOptoma UHD55
Product type Product type Home theater Home theater
Operating System Operating System Android 10.0
Image Size Image Size,projector1 29.96" - 300.15" 34.03" - 302.22"
Screen ratio Screen ratio 16:9 (4K HD) 16:9 (4K HD)
Screen color Screen color 96% Rec.709 color gamut 10-bit
Image Technology Image Technology HDR
Bluetooth Bluetooth Bluetooth 4.2
3D Stereoscopic film is a type of film that was first introduced in Hollywood on May 24, 1953 when stereoscopic films appeared. Full HD 3D Full HD 3D
Sound System Sound System 5.0 Watts Mono speaker 10.0 Watts Mono
Projection method Projection method Rear, forward, table, ceiling


BenQ TK700STiOptoma UHD55
I/O Connection Ports Connection Ports HDMI-1 (2.0b/HDCP2.2) ,
HDMI-2 (2.0b/HDCP2.2)
USB Type A (x1) ,
USB Type A-1 (2.0/Power Supply1.5A)
RS232 in (DB-9pin) (x1)
12-Volt Trigger
Audio In: Mini Jack
Audio Out: Optical
HDMI 2.0
Network: RJ-45
RS232: DB-9pin
USB x 2
VGA In: Dsub-15pin
Wireless Networking
WiFi WiFi 2.4G/5G Wi-Fi
Bluetooth Bluetooth Bluetooth 4.2


BenQ TK700STiOptoma UHD55
Size(HxWxD) Size(HxWxD) 312 x110 x246 mm 115 x 315 x 254mm
Power Usage Power Usage 380 Watts 330 Watts
Noise Level Noise Level 35 dB / 29 dB (Eco) 26dB
Machine weight Machine weight 3.1 KG 5.09kg
Accessories Accessories Remote Control w/ Battery RCI067
Quick Start Guide (x1) 21L
AC power cord
Remote control with CR2025 battery
Quick start user manual
WUSB wireless adapter
Warranty Warranty 3 years
other other (Fast Mode),16 ms (4K@60Hz),16 ms (4K@60Hz) *downscaling to 1080p,4 ms (1080p@240Hz),8 ms (1080p@120Hz)
Full HD 3D
Geometric Correction
Android OS
Streaming Apps
Frame Interpolation
Amazon Alexa
Streaming Apps
Google Assistant
Input lag: 4K/60: 16.9ms | 1080p/240: 4ms