Optoma GT1080HDR vs Optoma UHD38x

Bold marks the better figure where both are stated to the same standard. β€œβ€”β€ means the manufacturer doesn't state it.

Optoma GT1080HDROptoma UHD38x
Display system
Imaging technologyDLPDLP
Technology brandDLPDLP
Number of imaging devices11
Chip / panel diagonal0.65 in0.47 in
Native aspect ratio16:916:9
Native resolution1920 Γ— 10801920 Γ— 1080
Addressable resolutionβ€”3840 Γ— 2160
Colour wheel segments6 segments (RYGCWB)β€”
Optics
Throw ratio0.49:11.5–1.66:1
Projection distance table60β€³: 0.66 m Β· 80β€³: 0.88 m Β· 100β€³: 1.1 m Β· 120β€³: 1.33 m Β· 150β€³: 1.66 m Β· 200β€³: 2.21 m Β· 300β€³: 3.31 m100β€³: 3.32–3.65 m Β· 120β€³: 3.98–4.38 m
Zoom typeNoneOptical
Zoom ratioβ€”1.1Γ—
FocusManualManual
Vertical lens shift0%0%
Horizontal lens shift0%β€”
Motorized lens shiftNoβ€”
Fixed offset116%105%
Focal length7.42 mm15.84–17.42 mm
F-number2.81.98–2.02
Interchangeable lensNoβ€”
Image size range36.2–308 in33–300 in
Vertical keystone-40–40Β°-40–40Β°
Horizontal keystoneβ€”-40–40Β°
Corner / warp correctionβ€”Warp
Light source
Light source typeLampLamp
Lamp wattage240 W240 W
Light source lifeBright: 4,000 h Β· Dynamic: 12,000 h Β· Eco: 10,000 h Β· Eco plus: 15,000 hBright: 4,000 h Β· Dynamic: 15,000 h Β· Eco: 10,000 h
Cool-down time90 s90 s
Brightness
ISO light output3,800 lmβ€”
ANSI lumensβ€”4,000 lmPreliminary
Claimed brightness (non-standard)β€”4,000
Claimed brightness unitβ€”Unspecified
Brightness uniformity (centre-to-corner)70%80%
Contrast & black level
Dynamic contrast50,000:11,000,000:1
Colour
Colour temperature presetsβ€”D55, D65, D93, Native
Gamma / EOTF presetsβ€”2.2, 2.4
Bit depth / 'number of colours'30 bitβ€”
Calibration & picture control
Colour management system6-axis6-axis
ISF certifiedYesYes
HDR
HDR formatsHDR10HDR10, HLG
Motion & gaming
Max refresh rate1920Γ—1080: 120 Hz Β· 3840Γ—2160: 60 Hz1920Γ—1080: 240 Hz Β· 3840Γ—2160: 60 Hz
Input lag (rated)1920Γ—1080 @ 120 Hz: 8.4 ms Β· 1920Γ—1080 @ 60 Hz: 16 ms1920Γ—1080 @ 240 Hz: 4.2 ms
Audio
Speaker power10 W10 W
Speaker count11
Audio channelsMonoβ€”
Audio outputs3.5 mm3.5 mm
Inputs, control & connectivity
Max input signal3840 Γ— 21604096 Γ— 2160
HDMI port count22
HDMI ports (feature-level)HDMI 1: HDMI 2.0, HDCP 2.2; HDMI 2 / MHL: HDMI 1.4, HDCP 2.2HDMI 1: HDMI 2.0, HDCP 2.2; HDMI 2: HDMI 2.0, HDCP 2.2
Audio input terminals3.5 mmβ€”
Horizontal scan frequency15.38–91.15 kHz31–135 kHz
Vertical scan frequency50–85 Hz24–120 Hz
VGA inputYesβ€”
RS-232YesYes
12 V triggerβ€”Yes
3D
3D supportYesYes
3D sync methodDLP-Linkβ€”
3D formatsFrame packing, Side-by-side, Top-bottom, Frame sequentialFrame packing
Acoustic noise
Fan noise (sound pressure)Min: 26 dB(A) Β· Max: 28 dB(A)Min: 26 dB(A) Β· Max: 28 dB(A)
Environment & power
Operating temperature5–40Β°C5–40Β°C
Operating humidity10–85%RH10–85%RH
Altitude / high-altitude mode3,000 m3,000 m
High-altitude modeYesYes
Operating orientationsTable, Ceiling, RearTable, Ceiling, Rear
Rated voltage100–240 V100–240 V
Rated frequency50–60 Hz50–60 Hz
Power consumption (max)285 W305 W
Power consumption by modeBright typical: 230 W Β· Eco typical: 190 WMin: 220 W Β· Max: 305 W
Standby power0.5 W0.5 W
Power supplyβ€”Internal
Physical & installation
Width316 mm315 mm
Depth244 mm270 mm
Height115 mm118 mm
Weight3 kg3.98 kg
Colours / finishesβ€”White
Safety & compliance
Photobiological risk groupRG2RG2
Safety & market certificationsFCC, CEFCC
Support & ownership
WarrantyπŸ‡ΊπŸ‡Έ US 1 yrπŸ‡ΊπŸ‡Έ US 1 yr
Light-source warranty90 days (limited)90 days lamp warranty
User manualhttps://region-resource.optoma.com/products/import/Documents/efc40cbb-0f25-4fc5-8329-7ad5c3071097.pdfhttps://region-resource.optoma.com/products/import/Documents/13cdc4ab-4017-4930-a4fd-d023d407c4fe.pdf
In the box
Box contentsProjector, Remote, Batteries, Power cord, User manualPower cord, Remote, Batteries, Manual
Remote typeIRBacklit