Optoma GT2100HDR vs Optoma GT2400HDR

Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.

Optoma GT2100HDROptoma GT2400HDR
Display system
Imaging technologyDLPDLP
Technology brand—DLP
Number of imaging devices1—
Native aspect ratio16:916:9
Native resolution1920 × 10801920 × 1080
Optics
Throw ratio0.5:10.5:1
Projection distance table36″: 0.4 m · 40″: 0.4 m · 50″: 0.5 m · 60″: 0.7 m · 70″: 0.8 m · 80″: 0.9 m · 90″: 1 m · 100″: 1.1 m · 120″: 1.3 m · 150″: 1.6 m · 180″: 2 m · 200″: 2.2 m · 250″: 2.7 m · 292″: 3.2 m30″: 0.33 m · 40″: 0.44 m · 50″: 0.55 m · 60″: 0.66 m · 70″: 0.77 m · 80″: 0.88 m · 90″: 0.99 m · 100″: 1.1 m · 120″: 1.32 m · 150″: 1.65 m · 180″: 1.98 m · 200″: 2.2 m · 250″: 2.75 m · 300″: 3.3 m
Zoom typeNoneNone
FocusManualManual
Fixed offset116%116%
Focal length7.51 mm7.51 mm
Interchangeable lensNo—
Image size range36–292 in30–300 in
Vertical keystone-15–15°-15–15°
Horizontal keystone-15–15°-15–15°
Corner / warp correction4pt4pt
Light source
Light source typeLaser (phosphor)Laser (phosphor)
Light source detailDuraCore laserDuraCore laser
Light source lifeRated: 30,000 hEco: 30,000 h
Cool-down time10 s10 s
Brightness
ISO light output—4,200 lm
Claimed brightness (non-standard)4,200—
Claimed brightness unitUnspecified—
Brightness uniformity (centre-to-corner)75%75%
Contrast & black level
Dynamic contrast2,000,000:12,000,000:1
Colour
Bit depth / 'number of colours'30 bit30 bit
HDR
HDR formatsHDR10, HLGHDR10, HLG
Motion & gaming
Max refresh rate1920×1080: 120 Hz1920×1080: 120 Hz
Input lag (rated)1920×1080 @ 60 Hz: 17 ms · 1920×1080 @ 120 Hz: 8.6 ms · 3840×2160 @ 60 Hz: 17 ms1920×1080 @ 60 Hz: 16.7 ms · 1920×1080 @ 120 Hz: 8.4 ms · 3840×2160 @ 60 Hz: 16.7 ms
Audio
Speaker power15 W15 W
Speaker count11
Audio channelsMonoMono
Audio outputs3.5 mm3.5 mm
Inputs, control & connectivity
Max input signal3840 × 21603840 × 2160
HDMI port count22
HDMI ports (feature-level)HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0
Audio input terminals—3.5 mm
Horizontal scan frequency15–140 kHz15–135 kHz
Vertical scan frequency24–120 Hz24–120 Hz
VGA input—Yes
RS-232YesYes
LAN controlYesYes
12 V trigger—Yes
Control ecosystem driversCrestronCrestron
Bluetooth version—USB-A port for a Bluetooth dongle
EthernetYesYes
Firmware / software
Smart OSNoneNone
3D
3D supportYesYes
3D sync methodDLP-LinkDLP-Link
3D formatsSide-by-side, Top-bottom, Frame sequential, Frame packingSide-by-side, Top-bottom, Frame sequential
Setup automation
Auto keystoneYes—
Acoustic noise
Fan noise (sound pressure)Min: 29 dB(A) · Max: 36 dB(A)Eco: 29 dB(A) · Bright: 31 dB(A)
Environment & power
Operating temperature0–40°C0–40°C
Altitude / high-altitude mode2,500 m3,048 m
High-altitude modeYesYes
Operating orientations360°360°
Rated voltage100–240 V100–240 V
Rated frequency50–60 Hz50–60 Hz
Power consumption (max)173 W170 W
Power consumption by modeMin: 119 W · Max: 173 WMin: 120 W · Max: 170 W
Standby power0.5 W0.5 W
Power supplyExternal brick—
Physical & installation
Width274 mm274 mm
Depth216 mm216 mm
Height114 mm114 mm
Weight3 kg3 kg
Ingress protectionIP6XIP6X
Safety & compliance
Photobiological risk groupRG2RG2
Hazard distance—1 m
Laser product classClass 1 (Risk Group 2)Class 1 (Risk Group 2)
Safety & market certificationsFCCFCC
Support & ownership
Warranty🇺🇸 US 1 yr—
Light-source warranty5 years or 12,000 hours—
User manualhttps://region-resource.optoma.com/products/import/Documents/02387d20-4b12-4d04-97e4-be316b803cf2.pdfhttps://region-resource.optoma.com/products/documents/RbyYDr34tZXZAsFhkYCToBBRADe0vG7e5ApSi0Xd.pdf
In the box
Box contentsPower cord, Remote, Batteries, Quick start guidePower cord, Remote, Batteries, Basic user manual
Remote typeIRIR