Optoma X605 vs Optoma ZX312ST

Optoma X605 and Optoma ZX312ST are both DLP projectors. They have the same XGA resolution. What are the differences between the two projectors?

In terms of brightness, Optoma X605 has 6,000 lumens while Optoma ZX312ST has 3,500 lumens. Regarding the throw ratio, Optoma X605 has a throw ratio range of 1.6-2.0:1 while Optoma ZX312ST has a short throw ratio of 0.61:1.

To conclude, Optoma ZX312ST has a short throw while Optoma X605 has high brightness.

Product Name

Optoma X605

Optoma ZX312ST

Product Image Optoma X605 Optoma ZX312ST
Our Rating 7.8 7.8
Brand Optoma Optoma
Category projector projector

Optical Parameters

Optoma X605Optoma ZX312ST
Brand Brand Optoma Optoma
Brand Model Brand Model Optoma X605 Optoma ZX312ST
Brightness (ANSI lumens) Brightness (ANSI lumens) 6000 lumens 3500 lumens
Display Chip Display Chip Texas Instruments DLP digital optical processing projection technology 0.55 "XGA DMD chip
Display Technology Display Technology DLP
Standard Resolution Standard Resolution XGA(1024*768)
Maximum Supported Resolution Maximum Supported Resolution 1920*1200
Image Contrast Ratio Image Contrast Ratio 2000:1 100000:1
Throw Ratio Throw Ratio 1.6-2.0:1
Keystone Correction Keystone Correction Vertical: ± 30 degrees
Horizontal and vertical: ± 5 degrees
Lamp Life Lamp Life Normal mode: 1500 hours, economic mode: 3000 hours 20000 hours
Lamp Type Lamp Type laser
Focus technology Focus technology Manual focus

Projection Parameters

Optoma X605Optoma ZX312ST
Product type Product type Commercial projector Laser Projector
Image Size Image Size,projector1 60-105 inches
Screen ratio Screen ratio 4:3/16:9 4:3/16:9


Optoma X605Optoma ZX312ST
I/O Connection Ports Connection Ports
1 x HDMI 1.4 b

1 x DVI - D

1 x DisplayPort

2 x VGA in


1 x YPbPr

1 x S - Video
1 x Video
1 x VGA Out
1×VESA 3D (3 pins)
3 x Mini - jack Audio - In
1 x Mini - jack Audio - Out
2 x RCA (R/L) Audio-in
1× wired remote control interface
1 x RJ - 45
1 x RS-232 (9 pins)
1 x USB Type A
1 x USB Type B
1 x + 12 v
1×VGA in
1×Audio in
1×VGA out
1×Audio out


Optoma X605Optoma ZX312ST
Size(HxWxD) Size(HxWxD) 430×340×183mm 386×115×310mm
Power Usage Power Usage 281w, standby power: < 0.5W
Noise Level Noise Level 37dB 32dB
Machine weight Machine weight 8.6kg 5kg
Warranty Warranty 2 years
2 years
other other interaction