•   Overview
•   Advantage of Vizio M55Q7-H1
•   Advantage of Vizio M558-G1
•   Common Strengths and Weaknesses
•   Selected Features
•   Specifications

Here we are comparing Vizio M55Q7-H1 to Vizio M558-G1 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. Both models have the same 4K UHD (3840 x 2160) resolution and they both support HDR.

We have evaluated the TVs from available features and specifications. They both get the same overall score in our ranking system which is based on the display specifications, video, audio and other features, connectivity and format support.

This section shows the features and specifications which are the reason to choose Vizio M55Q7-H1 over Vizio M558-G1.

	Vizio M55Q7-H1	vs	Vizio M558-G1
HDR10+		vs
AMD Freesync™		vs
VRR		vs
Black Frame Insertion		vs
Auto Low Latency Mode		vs
HDMI Version	2.1	vs	2.0a
HDMI Audio Return Channel (ARC)	Enhanced	vs

This section shows the features and specifications which are the reason to choose Vizio M558-G1 over Vizio M55Q7-H1.

	Vizio M55Q7-H1	vs	Vizio M558-G1
More Local Dimming Zones	30	vs	90
Higer Dynamic Contrast Ratio	5000000∶1	vs	5000000∶1
Higher Frame Interpolation Frequency	120 Hz	vs	360 Hz
Bluetooth		vs

QLED backlight

Vizio M55Q7-H1 and Vizio M558-G1 are Quantum dot LED (QLED) TVs which have LED backlight LCD displays with additional semiconductor nanocrystal layer that produces different colors of light depending on the size of the particle. Quantum dots are able to emit precise colored light because particle sizes adjust at quantum-level velocities, resulting in accurate and efficient light emissions. This results in more accurate color reproduction and can even achieve a full coverage of BT.2020 color gamut. besides color Quantum dots also offer high brightness which results in high contrast ratio. This is especially important when displaying HDR content.

VA Panels

Both TVs have vertical alignment (VA) panels. Such panels are most commonly used in LCD TVs as they provide deeper blacks compared to the IPS panels. However, they are still limited with the viewing angles compared to the IPS panels or OLED displays.

Full-Array Local Dimming

The TVs have Full-Array Local Dimming technology with multiple zones throughout the displays. Individual zones of LEDs can light up independently which enhances black levels, shadow details and decreases level of light bleed in dark parts of the image. This gives higher contrast with increased picture quality which is very important for HDR reproduction. Higher number of zones gives better control over local dimming and less blooming around the bright objects and subtitles. Vizio M55Q7-H1 has 30 zones. Vizio M558-G1 has 90 zones.

HDR10

Vizio M55Q7-H1 and Vizio M558-G1 support HDR10 which was announced on August 27, 2015, by the Consumer Technology Association and uses the wide-gamut Rec. 2020 color space. It is not backward compatible with SDR. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 is technically limited to a maximum of 10,000 nits of brightness and uses 10-bit color which corresponds to 1024 shades of the primary RGB colors.

HDR10+ and Dolby Vision

Vizio M55Q7-H1 also supports HDR10+ and Dolby Vision and Vizio M558-G1 only supports Dolby Vision. Both formats are updates to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits on a scene-by-scene or frame-by-frame basis and support up to 12-bit color depth (4096 shades of RGB) and 8K resolution.

And in the end we display all the specifications which are present for both models.

Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - Vizio M55Q7-H1 and here - Vizio M558-G1.

BASICS	Vizio M55Q7-H1	Vizio M558-G1
Brand	Vizio	Vizio
Series	M Quantum	M Quantum
Model	M55Q7-H1	M558-G1
Size	55"	55"
Country	USA	USA
Release Year	2020	2019
Smart TV

DISPLAY	Vizio M55Q7-H1	Vizio M558-G1
Display Type	QLED	QLED
Actual Size (Diagonal)	54.5"	54.5"
Resolution	4K UHD (3840 x 2160)	4K UHD (3840 x 2160)
Refresh Rate	48 - 60 Hz	50 Hz/60 Hz
Screen Design	Flat	Flat
Panel Type	VA	VA
LED Type	Direct LED	Direct LED
Backlight Dimming	Full Array Local Dimming	Full Array Local Dimming
Backlight Name	Full Array LED	Full Array LED
Dimming Name	Active Pixel Tuning™	Active Pixel Tuning™
Number of Local Dimming Zones	30	90
Color	Quantum Color Spectrum	Quantum Color Spectrum
Viewing Angle
Panel Bit Depth	10 bits	10 bits
Color Depth	1.07 billion	1.07 billion
Peak Brightness	600 nits	600 nits
Dynamic Contrast Ratio	5000000∶1	5000000∶1

VIDEO	Vizio M55Q7-H1	Vizio M558-G1
3D Capability
HDR10
HDR10+
Dolby Vision
Dolby Vision IQ
HLG
Advanced HDR by Technicolor®
IMAX Enhanced
AMD Freesync™
NVidia G-Sync
4K HFR
2K HFR
VRR
HGIG Compatibility
Upscaling	Spatial Scaling Engine™	Spatial Scaling Engine™
Frame Interploation Technique	Dynamic Motion	Clear Action™
Frame Interpolation Frequency	120 Hz	360 Hz
Black Frame Insertion
Filmmaker Mode
Auto Low Latency Mode

AUDIO	Vizio M55Q7-H1	Vizio M558-G1
Speaker Power Rating	2 x 10 W	2 x 10 W
WiSA Ready

CONNECTIVITY	Vizio M55Q7-H1	Vizio M558-G1
Ethernet Input
Wi-Fi
Wi-Fi Frequency	2.4 GHz, 5 GHz	2.4 GHz, 5 GHz
Wi-Fi Protocol	802.11a/b/g/n/ac	802.11a/b/g/n/ac
Bluetooth
Chromecast	Built-In	Built-In
Google Home
Virtual Assistant	Google Assistant	Google Assistant
Works with Alexa
HDMI Inputs	4	4
HDMI Version	2.1	2.0a
HDMI Audio Return Channel (ARC)	Enhanced
HDCP Version	2.2	2.2
HDMI-CEC
USB Inputs	1	1
USB 3.0 Ports
RF (Terrestrial / Cable ) Inputs	1	1
IF (Satellite) Inputs
Component Inputs
Composite Inputs	1	1
RCA Audio Outputs
3.5mm headphone Audio Output
Optical Audio Output
RS-232C Remote
DLNA

OTHER	Vizio M55Q7-H1	Vizio M558-G1
Operating System	VIZIO SmartCast™	VIZIO SmartCast™
Voice Command
Mobile App	Vizio SmartCast Mobile™ app	Vizio SmartCast Mobile™ app
Teletext
On-Screen Display Languages	English, Spanish, French	English, Spanish, French

VIDEO FORMATS	Vizio M55Q7-H1	Vizio M558-G1
3GPP
AV1
AVI
ASF
DivX
Flash Video
H.263
H.264
H.265
MKV
M2TS
MP4
MPEG-4
QuickTime
RealVideo
TS
VC-1
VP7
VP8
VP9
VOB
VRO
WebM
WMV
Xvid

AUDIO FORMATS	Vizio M55Q7-H1	Vizio M558-G1
AAC
AC4
AIFF
ALAC
APE
aptX
eAAC+
EAC3
FLAC
HE-AAC
LPCM
M4A
MIDI
MP2
MP3
OGG
RealAudio
WMA
WAV

IMAGE FORMATS	Vizio M55Q7-H1	Vizio M558-G1
BMP
GIF
JPEG
JPS
MPO
PNG

TUNER	Vizio M55Q7-H1	Vizio M558-G1
Digital Tuner	1	1
SAT Tuner
Analog Tuner	NTSC-M	NTSC-M
NEXTGEN TV (ATSC 3.0)
Digital Terrestrial TV System	ATSC	ATSC
Digital Cable TV System	Clear QAM	Clear QAM
Color system	NTSC / PAL / SECAM	NTSC / PAL / SECAM

GENERAL	Vizio M55Q7-H1	Vizio M558-G1
Power Supply	AC 120 V, 60 Hz	AC 120 V, 60 Hz
Power Consumption (Typical)	115 W	161 W
Power Consumption (In Standby)	0.5 W	0.5 W
Dimension Without Stand (W x H x D)	49" x 28" x 3" 1234mm x 718mm x72mm	48.59" x 28.28" x 2.85" (1234.2mm x 718.3mm x 72.4mm)
Dimension With Stand (W x H x D)	49" x 31" x 10" 1234mm x 777mm x255mm	48.59" x 30.60" x 10.04" (1234.2mm x 777.2mm x 255.0mm)
Dimension of Package (W x H x D)	55" x 33" x 7" 1396mm x 847mm x174mm	54.96" x 33.07" x 6.85" (1396.0mm x 840.0mm x 174.0mm)
VESA Wall Mount
VESA Hole Pitch (W x H)	300 mm x 200 mm	200 mm x 200 mm
Weight Without Stand	36lbs (16kg)	35.94 lbs / 16.30 kg
Weight With Stand	36lbs (17kg)	36.38 lbs / 16.50 kg
Weight of Package (Gross)	52lbs (24kg)	52.03 lbs / 23.60 kg
Warranty	1 Year Parts & Labor	1 Year Parts & Labor

ACCESSORIES	Vizio M55Q7-H1	Vizio M558-G1
Remote	XRT140	XRT136