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VIZIO 100" Quantum 4K QLED TV vs LG QNED84B 100-Inch 4K Smart TV

Both are 100-inch 4K sets, but they are built for different rooms. The VIZIO VQD100M-08 uses a full-array LED backlight with Dolby Vision and HDR10+, and it runs VIZIO OS with Wi-Fi 6. The LG QNED84B is a Mini LED set on Google TV with a 2026 release, so it has the newer backlight and the broader app ecosystem. Buy the LG if you want the better contrast control and Google TV; buy the VIZIO if you prefer its simpler platform and Dolby Vision support. Neither is a high-refresh gaming panel at this size, so serious gamers should look elsewhere.

  • Choose the VIZIO VQD100M-08 if you want a 100-inch full-array set with Dolby Vision and the straightforward VIZIO OS.
  • Choose the LG QNED84B if you want Mini LED backlighting, Google TV and the newest model year.

Prices

  • VIZIO 100" Quantum 4K QLED TV: $1,498.00 at Walmart (checked today)
  • LG QNED84B 100-Inch 4K Smart TV: $699.99 at eBay (last seen Nov 9)
  • Difference: the LG QNED84B 100-Inch 4K Smart TV is $798.01 cheaper than the VIZIO 100" Quantum 4K QLED TV at the latest prices (Nov 9 and Nov 10)
VIZIO
VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08

VIZIO 100" Quantum 4K QLED TV

VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08

$1,498.00at WalmartChecked 14 h ago
See all prices and details
Visit Walmart
Pros
  • Dolby Vision and HDR10+ cover more HDR sources
  • Full-array local dimming improves black levels over edge-lit sets
  • Wi-Fi 6 keeps streaming stable on busy networks
  • Three HDMI ports and a published VESA pattern ease setup
Cons
  • 60Hz panel limits fast-motion and gaming smoothness
  • 10W x 2 speakers are modest for a screen this size
  • VIZIO OS has fewer apps than Google TV
LG
LG QNED evo AI QNED84B 100 inch Ultra HD 4K Smart Mini LED TV (100QNED84BU)

LG QNED84B 100-Inch 4K Smart TV

LG QNED evo AI QNED84B 100 inch Ultra HD 4K Smart Mini LED TV (100QNED84BU)

$699.99at eBayChecked Nov 9
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • Mini LED backlight gives finer dimming and brighter highlights
  • Google TV carries the widest app and casting ecosystem
  • 2026 model year means the latest LG processing
  • Bluetooth and Wi-Fi built in
Cons
  • Dolby Vision support is not confirmed for this model
  • HDMI count and refresh rate are not spelled out
  • LG's webOS-style extras are replaced by Google TV, which some owners find busier

What separates them

VIZIO 100" Quantum 4K QLED TVLG QNED84B 100-Inch 4K Smart TV
BacklightFull Array LEDMini LED
Smart platformVIZIO OSGoogle TV
HDR formatsDolby Vision, HDR10+, HDR10, HLGHDR10 and HLG support; Dolby Vision not confirmed
Refresh rate60Hz60Hz-class panel
HDMI inputs3Not specified in listing
WirelessWi-Fi 6 dual band, BluetoothWi-Fi and Bluetooth
Model yearCurrent VIZIO line2026
Mount pattern800mm x 400mm VESA, 106 lbsLarge-format VESA, weight not listed

Price history

$2,999.99$1,498.00
Nov 3Nov 10
  • VIZIO 100" Quantum 4K QLED TV: lowest $1,498.00 on Nov 9 at Walmart; $1,498.00 on Nov 10.
  • LG QNED84B 100-Inch 4K Smart TV: lowest $2,899.99 on Nov 3 at Amazon; $2,999.99 on Nov 10.

Prices at every store

VIZIO 100" Quantum 4K QLED TV

  • WalmartNew

    In stock

    $1,498.00Free shippingChecked 14 h ago
    Visit Walmart
  • eBayNew

    Availability unknownSold by yordanysede-0 (0% positive, 3 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $1,899.00+ $149.67 shippingChecked Nov 8
    Visit eBay

Also available at

  • WalmartCheck price at Walmart

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All 2 stores and price history →

LG QNED84B 100-Inch 4K Smart TV

  • Best BuyNew

    In stock

    $2,999.99Free shippingChecked 14 h ago
    Visit Best Buy
  • NeweggNew

    In stock

    $2,999.99Free shippingChecked 14 h ago
    Visit Newegg
  • eBayNew

    Availability unknownSold by buydig (99.5% positive, 681,100 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $699.99Free shippingChecked Nov 9
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $2,899.99Checked Nov 3
    Visit Amazon

Store links may earn us a commission. Some prices via Klarna.

All 4 stores and price history →

Specs compared

SpecVIZIO 100" Quantum 4K QLED TVLG QNED84B 100-Inch 4K Smart TV
colorBlackBlack
Screen size100100.0
actual_colorBlack—
Resolution3840 x 2160—
Refresh rate60Hz—
Backlight typeFull Array LED—
HDR formatsDolby Vision, HDR10+, HDR10, HLG—
Smart platformVIZIO OS—
HDMI ports3—
USB ports1—
WirelessBuilt-in Wi-Fi 6 dual Band, Bluetooth—
Speaker output10 watts x 2—
Show all 21 specsShow fewer specs
SpecVIZIO 100" Quantum 4K QLED TVLG QNED84B 100-Inch 4K Smart TV
VESA mount800mm x 400mm—
Weight106.04 lbs—
Connections—HDMI
Screen Resolution—3840x2160 (4K Ultra HD)
Bluetooth—Yes
Smart TV—Yes
Release Year—2026
Wi-Fi—Yes
Operating System—Google TV

What reviewers say

VIZIO 100" Quantum 4K QLED TV

Owner feedback on VIZIO's large Quantum sets is generally positive on picture size and brightness for the money, with recurring complaints about sound quality and the smart interface.

What people mention
  • Picture sizePraisedOwners buy it for the wall-filling image and say it delivers a cinema-like feel at home.
  • HDR brightnessPraisedReviewers note bright highlights and good color with Dolby Vision and HDR10+ content.
  • SoundCriticisedThe 10W speakers are called thin, and most owners add a soundbar.
  • Smart platformMixedVIZIO OS covers the main apps but is described as slower and more ad-filled than rivals.

Questions and answers

Which is better for a bright living room?
The LG QNED84B. Mini LED pushes higher brightness and controls blooming better than the VIZIO's full-array LED, which matters in a sunlit room.
Does the VIZIO support Dolby Vision?
Yes. The VQD100M-08 lists Dolby Vision, HDR10+, HDR10 and HLG, so it handles more HDR formats than the LG listing confirms.
Which has the better smart TV system?
Google TV on the LG has more apps and smoother casting. VIZIO OS is simpler and lighter, which some owners prefer for everyday streaming.
Are either good for gaming?
Not really. Both are 60Hz-class panels at 100 inches, so fast games will show motion blur compared with 120Hz sets.
Is the LG worth stepping up to?
If contrast, brightness and app choice matter most, yes. If you want Dolby Vision and a simpler interface, the VIZIO covers that.
How many HDMI ports does each have?
The VIZIO has three HDMI and one USB. The LG listing does not state a port count, so check the back panel before buying for a console, soundbar and streaming stick.

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More comparisons

  • VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08 vs Sony BRAVIA 3 II 100 inch Ultra HD 4K Smart LED TV (K-100XR30M2)
  • Philips 100" Class QLED+ 4K UHD (2160p) 144Hz Google Smart TV (100PQL7556/F7) vs VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08
  • 100-Inch Hisense 4K UHD (2160P) QLED Mini LED Smart Google Smart TV (100U65QF) vs VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08
  • Hisense 100" Class QD6 Series Hi-QLED 4K UHD HDR Smart Fire TV (2025) vs VIZIO 100 in Class Quantum 4K QLED HDR Smart TV, VQD100M-08
  • Sony BRAVIA 3 II 100 inch Ultra HD 4K Smart LED TV (K-100XR30M2) vs LG QNED evo AI QNED84B 100 inch Ultra HD 4K Smart Mini LED TV (100QNED84BU)

Buying guides that pick them

  • Best 100-inch 4K smart TVs under $1,500