Product comparison · 2 data projectors

3M X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White vs Dell 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black

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  • 55specifications compared
  • 35differ
  • 20identical
  • 49known for one product only

Key differences

  • Projector brightness
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:2700 ANSI lumens
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:5000 ANSI lumens
  • Projection technology
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:LCD
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:DLP
  • Projector native resolution
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:XGA (1024x768)
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:1080p (1920x1080)
  • Contrast ratio (typical)
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:2000:1
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:2500:1
  • Native aspect ratio
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:4:3
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:16:9
  • Supported aspect ratios
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:4:3, 14:9, 16:9
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:16:9
  • Service life of light source
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:3000 h
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:1500 h
  • Lamp power
    • X21i Standard throw projector 2700 ANSI lumens LCD XGA (1024x768) White:215 W
    • 7700HD Standard throw projector 5000 ANSI lumens DLP 1080p (1920x1080) Black:400 W

Side by side

Differences highlightedShow differences only (on)
Comparison of X21i, 7700HD
104 specifications
Projector7 differ
Projector brightnessDiffers2700 ANSI lumens5000 ANSI lumens
Projection technologyDiffersLCDDLP
Projector native resolutionDiffersXGA (1024x768)1080p (1920x1080)
Contrast ratio (typical)Differs2000:12500:1
Native aspect ratioDiffers4:316:9
Supported aspect ratiosDiffers4:3, 14:9, 16:916:9
Screen size compatibilityDiffers762 - 7620 mm (30 - 300")515.6 - 7439.7 mm (20.3 - 292.9")
Number of coloursKnown for one16.78 million coloursUnknown — not stated by the source
Horizontal scan rangeKnown for one31.5 - 106 kHzUnknown — not stated by the source
Vertical scan rangeKnown for one56 - 120 HzUnknown — not stated by the source
Keystone correction, verticalKnown for one-30 - 30°Unknown — not stated by the source
Matrix sizeKnown for one1.6 cm (0.63")Unknown — not stated by the source
Matrix typeKnown for one3-panel (p-Si TFT active)Unknown — not stated by the source
Projection distanceKnown for oneUnknown — not stated by the source1 - 12 m
Contrast ratio (dynamic)Known for oneUnknown — not stated by the source10000:1
UniformityKnown for oneUnknown — not stated by the source85%
Light source3 differ
Service life of light sourceDiffers3000 h1500 h
Service life of light source (economic mode)Known for one5000 hUnknown — not stated by the source
Lamp typeKnown for oneUHPUnknown — not stated by the source
Lamp powerDiffers215 W400 W
Lamp power (economic mode)Differs140 W2000 W
Lens system3 differ
Focal length rangeDiffers19 - 23 mm39.12 - 46.94 mm
Aperture range (F-F)Differs1.67 - 1.912.6 - 2.9
Throw ratioDiffers1.5 - 1.8:11.85 - 2.22:1
Zoom capabilityKnown for oneUnknown — not stated by the sourceYes
Zoom typeKnown for oneUnknown — not stated by the sourceManual
OffsetKnown for oneUnknown — not stated by the source115%
Video3 differ
Analog signal format systemDiffersNTSC, NTSC 4.43, PAL, PAL M, PAL N, SECAMNTSC, NTSC 4.43, NTSC J, NTSC M, PAL 60, PAL B, PAL D, PAL G, PAL H, PAL M, PAL Nc, SECAM B, SECAM D, SECAM G, SECAM K, SECAM K1, SECAM L
Full HDDiffersNoYes
Supported graphics resolutionsKnown for one1024 x 768 (XGA), 1600 x 1200 (UXGA)Unknown — not stated by the source
Supported video modesDiffers1080i, 480i, 480p, 576i, 720p1080i, 1080p, 480i, 480p, 576i, 576p, 720p
Ports & interfaces4 differ
HDMI ports quantityDiffers12
DisplayPorts quantityKnown for one0Unknown — not stated by the source
USB 2.0 ports quantityDiffers24
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0Unknown — not stated by the source
Audio (L/R) inKnown for one0Unknown — not stated by the source
Audio (L/R) outKnown for one0Unknown — not stated by the source
Headphone outputsDiffers02
Microphone inKnown for oneNoUnknown — not stated by the source
PC Audio inKnown for oneYesUnknown — not stated by the source
PC Audio outKnown for oneYesUnknown — not stated by the source
AUX inKnown for oneNoUnknown — not stated by the source
USB connector typeDiffersUSB Type-A, USB Type-BMini-USB B, USB Type-A, USB Type-B
Composite video outKnown for one0Unknown — not stated by the source
BNC input portsKnown for one0Unknown — not stated by the source
AV outputKnown for oneNoUnknown — not stated by the source
CardBus PCMCIA slot typeKnown for oneNoUnknown — not stated by the source
Digital audio optical outKnown for one0Unknown — not stated by the source
Progressive scan outputKnown for oneNoUnknown — not stated by the source
HDMI versionKnown for oneUnknown — not stated by the source1.3
DC-in jackKnown for oneUnknown — not stated by the sourceYes
Networkidentical
BluetoothKnown for oneNoUnknown — not stated by the source
Storageidentical
Card reader integratedKnown for oneNoUnknown — not stated by the source
Features2 differ
Noise levelDiffers37 dB39 dB
Noise level (economic mode)Differs30 dB36 dB
CertificationKnown for onecUL, FCC-15 B, CEUnknown — not stated by the source
HDCPKnown for oneUnknown — not stated by the sourceYes
Password protectionKnown for oneUnknown — not stated by the sourceYes
Multimedia2 differ
Number of built-in speakersDiffers12
RMS rated powerDiffers1 W10 W
Design2 differ
Product colourDiffersWhiteBlack
PlacementDiffersDesktop, CeilingDesktop
Cable lock slotKnown for oneUnknown — not stated by the sourceYes
Cable lock slot typeKnown for oneUnknown — not stated by the sourceKensington
Displayidentical
Built-in displayKnown for oneNoUnknown — not stated by the source
Power3 differ
Power consumption (typical)Differs320 W525 W
Power consumption (standby)Differs0.4 W0.5 W
AC input voltageDiffers220 - 240 V100 - 240 V
Auto power offKnown for oneYesUnknown — not stated by the source
Power consumption (PowerSave)Known for oneUnknown — not stated by the source20 W
Power consumption (economy mode)Known for oneUnknown — not stated by the source430 W
Operational conditions1 differ
Storage temperature (T-T)Differs-20 - 60 °C0 - 60 °C
Operating altitudeKnown for one0 - 1600 mUnknown — not stated by the source
Operating relative humidity (H-H)Known for oneUnknown — not stated by the source0 - 80%
Storage relative humidity (H-H)Known for oneUnknown — not stated by the source0 - 90%
Weight & dimensions4 differ
WeightDiffers2.2 kg7.26 kg
WidthDiffers306 mm432 mm
DepthDiffers221 mm290 mm
HeightDiffers77 mm135 mm
Packaging content1 differ
Cables includedDiffersAC, VGAAC, USB, VGA
Batteries includedKnown for oneUnknown — not stated by the sourceYes
ManualKnown for oneUnknown — not stated by the sourceYes
Quick start guideKnown for oneUnknown — not stated by the sourceYes
Technical detailsidentical
Compliance certificatesKnown for oneUnknown — not stated by the sourceRoHS

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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